Have you ever tryed useing a large glass magnifine lens, Maybe one from an old class room over head projector And focusing your frensnal lens at a lower intensity in to the gass, then pulling the whole asembaly in to a focus?
Will this work with regular tin that you get cat food and soup in, or is it pure tin that you use? Very interested, always wanted to make my Mum a letter opener for Mothers day =) Could I pour it into a carved timber mould?
@175myles Those cans are usually aluminum. I wouldn't pour into a wooden mold either as the burning wood could introduce impurities and make whatever you're making look bad. Maybe you could try making a clay mold and getting actual tin (not from a can) + copper to make bronze... The fresnel lens should be able to melt both copper and tin... If you stick them in a crucible together 90% copper (copper pipe?) 10% tin, and heat it until it melts, you'll have bronze. Alternatively Zn + Cu = brass.
Would not mind having a few of these set up so that they retracted behind guards during night and followed the sun to power a steam engine during the day. I could imagine heat that intense from one lens being a bit more from about five or six much larger ones aimed at the same spot.
Hey Damn Rojas, a tip to get the steel filings of the magnet is put the magnet in a plastic bag then do your stuf and when its time , its easier to get the magnet out and leave all the filings in the bag.....
Dan do you know any black smiths or knifesmiths could this be a viable method used in their craft? They have to get steele cherry red in order to form it into the shapes needed to build what they wish.
@cdltpx I think that you would at least be able to use a similar method to heat treat steel. you might have to use multiple lens or an elongated parabolic mirror to get the focal point across more of the spine of the blade profile. that way more of the heat is focused on the spine of the blade and when you quench it the belly, or edge of the blade will be of harder than the spine. you might need to use clay on the front to dissipate heat, but I cant say for certain as I have never done it.
@PghGingerKid Or you could have the blade running the same direction if the beam of light but it is a bad idea imagine your creative juices are flowing you pull the blade out start hammering away just when you almost have what you would call a finished piece the cloud comes and gives you a 2 hour coffee break.
Would be nice to have an electronic thermometer to measure the temperature of the focal point. I think all your audience is curious what that thing tops at :).
@purplegumibear Great idea, but wouldn't the ziplock bag melt? I was thinking there has to be an easier method too, I was thinking about metal splinters and how they're no fun at all!
How are you guys doing? This appears to be the last video that I can find that was put online about a month ago. Is everything ok Dan? Are you busy working on a new project or have you given up on us? lol
Great, informative vids! Thank you for sharing all of the great green info:) I have music for your vids that you can use for free. please go to ReverbNation fwd slash TheFunkyMcFlys to listen and download the music there. All of the music is free to use for anyone posting Helpful Green Vids like yours. Thanks again for everything you do!
Might be saying something you already know, but if you heat the surfaces of both your pieces of steel to melting point or just below incandescent then hammer them together they'll fuse rather than just bind to each other. Also, the sanded steel will likely have a high carbon content because of the burning sparks that will stop the metal from fusing. Basically the rule for ferric metals casting/fusing is avoiding air/oxidation/carbon buildup since it'll stop welding.
@BeeRich33 Hmmm - That would be similar to using heat sinks on wiring in electronic projects so the excessive heat doesn't end up ruining the electronics, just sidetracks to the heat sinks before it reaches the components.
Cool. It made me wonder if there's an material that would hold heat long enough if heated through the day that it would keep people sitting around it a little warmer for a few hours after sunset. I'm thinking outside at a BBQ ect...I guess just heating the paved concrete area outside might help, as long as I don't explode it.... maybe a cubic metre of water?
@Greatbloke Your idea there is commonly used in constructing solar heated houses. They may use stone, concrete, even water to provide some coolness during the day, some heat at night. An earth berm house can practically heat itself. Dennis Weaver had a home like that - there should still be a video on YT about it. I think the term is "specific heat". Choose a substance with high specific heat and reflect that using a flat vertical surface.
YA MAN, I LOVE IT DAN, I HAVE A COOL IDEA FOR YOU FROM WHEN I WAS A GOLD SMITH.
CUT THE STRAW FROM A GOOD BROOM, THEN SOAK IT IN WATER FOR A DAY. STRAIGHTEN IT OUT ALL IN ONE DIRRECTION AND PLACE ENOUGH OF IT IN A CAN SO THAT IT ALL STAYS STRAIGHT UP. BURN A NICE LITTLE FUNNEL SHAPE INTO THE STRAW. THEN POUR YOUR MOLTEN TIN INTO THE STRAW. ABOUT 2 OUNCES. IT MAKES A REALY NICE DISPLAY OF ICICLES WHEN IT IS PULLED BACK OUT. THE STRAW WILL NOT STICK TO IT. HAVE FUN AND VIDEO IT.
Might be worthwhile mixing in a little charcoal powder to the fillings. The fillings will have a lot of surface area for their volume, and the surface is likely to have have flash oxidized into rust. Charcoal might well reduce the fillings back into elemental iron, just like in a blast furnace.
I recommend putting your magnet into a bag to make removing your fillings easier. Don't melt galvanized steel or iron you will get zinc poisoning. purgatoryironworks or web search for more info.
I wonder if you got a small crucible suspended in the air and focused your beam how much better that would work. Do you think that would melt gold for casting if you used a crucible? Awesome video !!!
From the research I just did, it appears that you could run steam into the exhaust intake on the turbocharger to drive the turbine.Then, by removing the manifold that surrounds the compression blower on the other side, and taking off the fan, you would have access to a drive shaft that you could put a wheel with magnets attached on for generation purposes! With a large enough parabolic reflector you could earn a living just by selling power back to the grid. Can't wait to do this!
@eazolan Depends on the material I guess, there is definately a certain amount of water vapour in regular car exhaust so I'm sure there is some measure of protection from rust in place.
Under reducing conditions any rust will be turned back to iron. With exhaust gases any unburnt hydrocarbons will tend to collect on (initally) cooler bits of metals, as soot. When that heats up, it'll want to burn but to do that, it needs oxygen. So much so, if the layer is reasonably thick, it'll pull oxygen out of any surface rust,
Just had a good idea, have you thought about testing a supercharger from a car as a turbine to make power from steam produced by a large parabolic mirror? I wonder how the efficiency would compare to a steam engine. Superchargers can be bought relatively cheaply compared to steam engines.
Would it not be easier to place a stronger magnet under the cardboard to attract the metal fillings away from the magnet that you had above the belt sander that caught the small pieces?
Tip. Put the magnet in a ziplock bag turned inside out helps to remove the filings. :-) I drag the magnet outside in a plastic bag to collect black sand.
@marthale7 I was just about to post the exact same thing. I do that too when filing down something for iron filings. Also sticky tape helps in removing the hard to clean filings off your magnets if you like to keep them clean
Hey Dan, since you like destroying stuff with your big lens, I was wondering if you ever tried to see if you could put a solar cell in water, and keep it cool enough to work, even when hitting it with concentrated sun light? How much power could you get our of a single cell?
you i think would get abetter result if you got the metal in a low or oxygen free environment. If you did that less of it would combine with oxygen also you if you got that you could create an insulated container that would allow you to melt more metal.
Your film making skills are coming along so well dude. I started watching you a couple years ago i think, and remember thinking how amateurish they were. Now you've got actual editing, decent camera angles, and a good general flow to the videos. Congrats!
wow if you had a big enough lens you could have a little foundry and pour up some ingots out of your scrap metal wonder if thats possible? wonder how big the lens would have to be to heat up a decent size crucible big enough to pour up some ingots? you could probably do it with aluminum easily.
@blinking801 The amount of heat would obviously depend on the diameter of the fresnel lens. You darn well better have good eye protection, probably some welding glass, which you can select by number to suit purposes of proper visibility of your project.
I think some sort of flux (maybe borax?) might help quite a bit to smooth up those steel joints and make them look nice and pretty.
I think you could melt a much larger piece of steel if you encapsulated the bulk of the metal in a decent insulator (like maybe in a piece of firebrick or pumice) and then exposed just the one small surface to the heat from the lens. That way you would not lose so much heat to convective flow to the air and or conductive flow to the metal stand it was sitting on.
@gjholcomb A wire wheel can really shine stuff up, even rusted steel. Then maybe buff it to a nice finish, and to keep it nice, maybe spray some clear lacquer on it.
Hey Dan, I was never able to figure out how the Earth's magnetic field maintains itself if the very seat of magnetism is in a liquid state. How is it different from what you just did with melting that magnet?
@eddiequest4 It is considered to be in a molten state, but no doubt moves very slowly. It does move - some atlases will show the position of the north magnetic pole over time and how it wanders around from year to year. Recently it has been moving faster.
@alekkthewolf However, different frequencies of light, and infrared and ultraviolet, focus at different points. Some wavelengths will not focus at all because the energy passes right through. This is why achromatic and apochromatic telescopes focus light so much better, to largely overcome these focus differences.
He is doing okay. We just got the dogs their shots and tags licenses. He has insurance for his van 6 months. I will have updates on Roland on our other older channel ROJASDAN. Just need to edit. I will have a link too.
Well Dan, in some way not a bad idea to collect the steel but steel loses it's magnetisme at around 770C°. That's about 1418 degrees Fahrenheit. It would be more efficiënt to just hold the belt sander vertical and place a cup under it.
Well Dan, in some way not a bad idea to collect the steel but steel loses it's magnetisme at around 770C°. That's about 1418 degrees Fahrenheit. It would be more efficiënt to just hold the belt sander vertical and place a cup under it.
Other than a "big kid's magnifying lens" being able to "burn cooler/bigger stuff" what *actual* real world use does a fresnel lens have in the alternative power scene? I've watched most of your videos diligently but have seen no evidence of the actual use of such a lens in the real world with real feedback/figures of how it contributes to anything because you can't even use it to focus more sunlight on solar panels and heating water for your geyser is like playing russian roulette. uncontrolled
@AcidRaZor The only use I can think of for a frenel lens us running a Stirling engine, or a steam engine, both of which are difficult, and inefficient for the back yard DIYer. Your analysis is right, I think.
I agree to some extent although I personally believe a steam engine would be completely do-able for bakyard-diy.
You'd need a solar tracking heating platform, an old wood stove for an example with pipe attachments and a water feed, a less than optimal range for the fresnel lens so that it didn't melt the oven although it seems that might not be a problem judging by this fellows attempts at a solid metal block, and lastly you might need 4-5 of these lenses.
@88Kamikaze69 do-able, yes. practical? no. Remember, I'm suggesting something that everyone could use as green energy. If 200 million people had Fresnel-lens-steam-engines generating them electricity, you'd have 200 million potential fire-starters. Imagine a squirrel fucking with your tracker and the lens being off enough to set your lawn on fire (or even your house?) especially in dry areas...
@AcidRaZor I think the main idea here is to show others how the science and technology works, and leave it to others to think of real world uses. Certainly for me I can see uses like being able to build fires in wilderness emergency situations when you don't have a lighter or matches. A small fresnel lens would be very portable and light. Cooking could easily be accomplished by larger ones, solar ovens, etc.
@bodryn there are better and safer ways to build fires if you're in a wilderness emergency situation. And face it, if you're IN the wilderness you have to be prepared (like the boyscouts say). You also don't have the sun readily available in an emergency since those things happen whenever they want, not during normal daylight hours only.
I do get what you're saying though, but I'm not really stupid, and for the life of me CANNOT think of a practical application this might have due to its power
@AcidRaZor It's OK with me if you are unable to think of a practical application for this. Maybe some others will, but what the heck, I think it's about science, and learning. I have been quite inventive in my life and often unconventional in my approach. There are always people saying "That'll never work", etc. My dad used to do that but I proved him wrong on a number of occasions.
try to apply a hihg voltage at the ends of the nomore magnetic magnet... maybe it will regain some properties (if I remember correctly that's more or less how people make actual magnets)
@bodryn True, I forgot that. they do a double induction. One with high temperature metal (to "align" the internal structure) and the second with the cold piece to really give it a proper magnetic field. (if I recall correctly)
@frankcoffee I think the extra lens would melt the second lens faster than the steel. Much better to use mirrors or some other reflecting devise to direct more sun light onto a single lens.
This has been flagged as spam show
did you try to mold somthing?
Dersou0ouzala 3 weeks ago
This has been flagged as spam show
did you try to mold somthing?
Dersou0ouzala 3 weeks ago
did you try to mold somthing?
Dersou0ouzala 3 weeks ago
green power
hamid4222 1 month ago
I don't belive magnet did much during a curie temperature of steel (basiclly if steel is red hot itbis not magnetic)
AgentDexter47 5 months ago
I mean it a good 6-9 inch glass or better yet pyrex mag lens focus it on a target,
then focus the Parabolic lenz on the diameter of the pyrex mag lens. Try a crucible
FireDropTechnologies 5 months ago
Have you ever tryed useing a large glass magnifine lens, Maybe one from an old class room over head projector And focusing your frensnal lens at a lower intensity in to the gass, then pulling the whole asembaly in to a focus?
double magnification.
FireDropTechnologies 5 months ago
Will this work with regular tin that you get cat food and soup in, or is it pure tin that you use? Very interested, always wanted to make my Mum a letter opener for Mothers day =) Could I pour it into a carved timber mould?
175myles 7 months ago
@175myles Those cans are usually aluminum. I wouldn't pour into a wooden mold either as the burning wood could introduce impurities and make whatever you're making look bad. Maybe you could try making a clay mold and getting actual tin (not from a can) + copper to make bronze... The fresnel lens should be able to melt both copper and tin... If you stick them in a crucible together 90% copper (copper pipe?) 10% tin, and heat it until it melts, you'll have bronze. Alternatively Zn + Cu = brass.
snoop0x7b 6 months ago
@snoop0x7b, I got heaps of aluminium cans to melt. But no Fresnel lens, just wanted to know something good to melt.
175myles 6 months ago
Would not mind having a few of these set up so that they retracted behind guards during night and followed the sun to power a steam engine during the day. I could imagine heat that intense from one lens being a bit more from about five or six much larger ones aimed at the same spot.
justicetrooper 7 months ago
ALL HAIL MIGHTY RA! THE SUN GOD!
m0tkid 9 months ago 4
shine the light though a magnifying glass
marinepower 9 months ago
This has been flagged as spam show
Beethoven
/watch?v=PLPnOUC0BNI
novalvechannel 9 months ago
where do you get the frensel lens?
Adoggett1 9 months ago
@Adoggett1 And old projection TV would have a decent sized one.... Check craigslist free section for an old broken TV. Or you can get them off ebay.
snoop0x7b 6 months ago
what is the name of that song
chuckamer 10 months ago
You wouldn't need a forge to heat a soldering iron.
Like the sheet metal guys used to do. I'm 58 so
maybe you've never heard of that. We did it in
metal shop at my junior High School (Monterra)
back in the 1800s or so. (actually '64-'67)
Maybe you could rig a large star following telescope
with the chair on it as a sun following one with the fresnel
lens and put a small work table under the focus end...
you could play all day with no adjustments.
chonesong 10 months ago
Love the music !
chonesong 10 months ago
Yo Dan, you should find a way to amplify the light 20x or so, you will be burning more and much faster.
XTCMatrix 10 months ago
Hey Damn Rojas, a tip to get the steel filings of the magnet is put the magnet in a plastic bag then do your stuf and when its time , its easier to get the magnet out and leave all the filings in the bag.....
wolmartito 10 months ago
Angle grinder in a large trash bag or empty trash can.
bnewton81 10 months ago
Angle grinder in a large trash bag.
bnewton81 10 months ago
can you melt silve with the sun like this?
zekehooper 10 months ago
we got here a rally strong magnet an i will place it carefully..... BANG ....^^
Fe0n 10 months ago
0:20 prop malfunction ! :)
angryadrien 10 months ago
I enjoy watching steel and metals melting! Yummy! So thrilling :P
DoodiePunk 10 months ago
Seems like a lot of work for a little return.
Raezerfist 10 months ago
under certain conditions you could turn that steel into gold
toranamunter 10 months ago
This has been flagged as spam show
try boiling water with it
vilke60 10 months ago
Dan do you know any black smiths or knifesmiths could this be a viable method used in their craft? They have to get steele cherry red in order to form it into the shapes needed to build what they wish.
cdltpx 11 months ago
@cdltpx I think that you would at least be able to use a similar method to heat treat steel. you might have to use multiple lens or an elongated parabolic mirror to get the focal point across more of the spine of the blade profile. that way more of the heat is focused on the spine of the blade and when you quench it the belly, or edge of the blade will be of harder than the spine. you might need to use clay on the front to dissipate heat, but I cant say for certain as I have never done it.
PghGingerKid 10 months ago
@PghGingerKid Or you could have the blade running the same direction if the beam of light but it is a bad idea imagine your creative juices are flowing you pull the blade out start hammering away just when you almost have what you would call a finished piece the cloud comes and gives you a 2 hour coffee break.
cdltpx 10 months ago
You tried this with any sort of crucible? Something like aiming the focal point at the opening and collecting that way.
hatebunny 11 months ago
Very interesting stuff.
Would be nice to have an electronic thermometer to measure the temperature of the focal point. I think all your audience is curious what that thing tops at :).
Keep up the green work.
mancamiatipoola 11 months ago
Terminator FTW!
madjimms 11 months ago
melt salt and using DC voltage to separate Na+ and Cl-, you can get metal Na.
YSTech2010 11 months ago
For some reason this reminded me of a tool video. ._.
GreenEmberfly 11 months ago
can you either make a heat exchanger or method to heat a pool with the frenal?
sonomarik 11 months ago
Hello. This was really interesting. Can you tell me a good place to buy these Fernell lenses from?
aronmustang69 11 months ago
Hello Dan.
What temperature did you get?In Cº please =)
Albinorama 11 months ago
This would be twice as effective as lethal injection. just, BZZAPP in the back of the head when they are unconcious, they wont know what hit them.
massacreman3000 11 months ago
if you put your magnet in a ziplock bag you will find that its much easier to remove the filings
purplegumibear 11 months ago 14
@purplegumibear The hot metal will burn the bag.
XTCMatrix 10 months ago
@purplegumibear
The ziplock bag would melt.
appa609 9 months ago
@purplegumibear Great idea, but wouldn't the ziplock bag melt? I was thinking there has to be an easier method too, I was thinking about metal splinters and how they're no fun at all!
MajorAmby 8 months ago
ooh melt salt!
mV33rs 11 months ago
How are you guys doing? This appears to be the last video that I can find that was put online about a month ago. Is everything ok Dan? Are you busy working on a new project or have you given up on us? lol
stopcraponutube 11 months ago
forgive my lack of experience. would you be able to use a high temp rated magnifying glass to make a smaller(thus more concentrated) focal point?
tweakinreaper 11 months ago
This has been flagged as spam show
hi i have a steca tarom 440 12v/24v/48v charge controller pwm battery charging. my panels are 24v but my batterys 12v will it go 24v to 12v thanks
ourkids12341 11 months ago
I have one question magnets loose their power when heated up, so how do the earth which has a hot inter core maintain its magnetic field?
TheMochowFactor 11 months ago
@TheMochowFactor it's not a regular magnet
andreirocks1992 11 months ago
if its not neodymium because its not magnetic what metal is it or is it a whole new element
brownbrve 11 months ago
wow could you get a fresnel big (or powerful) enuff for black smithing?
kevbow0137 1 year ago
This has been flagged as spam show
Great, informative vids! Thank you for sharing all of the great green info:) I have music for your vids that you can use for free. please go to ReverbNation fwd slash TheFunkyMcFlys to listen and download the music there. All of the music is free to use for anyone posting Helpful Green Vids like yours. Thanks again for everything you do!
cojobo34 1 year ago
Doesn't those flying sparks make u wanna say PEW PEW PEW PEW PEW PEW!!
LolBolt 1 year ago
@LolBolt I used to love to watch those sparks when I was a kid watching my dad sharpen the mower blades on the farm.
bodryn 11 months ago
LOL! the best part was the magnet LOL!!!
norvman 1 year ago
Might be saying something you already know, but if you heat the surfaces of both your pieces of steel to melting point or just below incandescent then hammer them together they'll fuse rather than just bind to each other. Also, the sanded steel will likely have a high carbon content because of the burning sparks that will stop the metal from fusing. Basically the rule for ferric metals casting/fusing is avoiding air/oxidation/carbon buildup since it'll stop welding.
Panzerzimmerpflanze 1 year ago
Large blocks of metal are actually used as heat sinks for welding corners on various metals.
BeeRich33 1 year ago
@BeeRich33 Hmmm - That would be similar to using heat sinks on wiring in electronic projects so the excessive heat doesn't end up ruining the electronics, just sidetracks to the heat sinks before it reaches the components.
bodryn 11 months ago
@bodryn Basically keeps the workpiece from warping around the applied heat, from what I gather.
BeeRich33 11 months ago
Huge tip Dan.
Wrap the magnet one or two layers of cellophane. You won't have to fight to get your filings off next time .
Cyberdactyl 1 year ago
@Cyberdactyl Nice idea there. Or else use an electromagnet, then turn off the power so they'll drop off.
bodryn 11 months ago
Dan, you never make it obvious that you run a website that sells great green power related items. You really should. Great video as always.
threeque 1 year ago
When you said that steel transfers the heat outward you made me think about building 7 again. :^(
carp1844 1 year ago
Cool. It made me wonder if there's an material that would hold heat long enough if heated through the day that it would keep people sitting around it a little warmer for a few hours after sunset. I'm thinking outside at a BBQ ect...I guess just heating the paved concrete area outside might help, as long as I don't explode it.... maybe a cubic metre of water?
Greatbloke 1 year ago
@Greatbloke Your idea there is commonly used in constructing solar heated houses. They may use stone, concrete, even water to provide some coolness during the day, some heat at night. An earth berm house can practically heat itself. Dennis Weaver had a home like that - there should still be a video on YT about it. I think the term is "specific heat". Choose a substance with high specific heat and reflect that using a flat vertical surface.
bodryn 11 months ago 3
YA MAN, I LOVE IT DAN, I HAVE A COOL IDEA FOR YOU FROM WHEN I WAS A GOLD SMITH.
CUT THE STRAW FROM A GOOD BROOM, THEN SOAK IT IN WATER FOR A DAY. STRAIGHTEN IT OUT ALL IN ONE DIRRECTION AND PLACE ENOUGH OF IT IN A CAN SO THAT IT ALL STAYS STRAIGHT UP. BURN A NICE LITTLE FUNNEL SHAPE INTO THE STRAW. THEN POUR YOUR MOLTEN TIN INTO THE STRAW. ABOUT 2 OUNCES. IT MAKES A REALY NICE DISPLAY OF ICICLES WHEN IT IS PULLED BACK OUT. THE STRAW WILL NOT STICK TO IT. HAVE FUN AND VIDEO IT.
MUDDy
muddymuddymuddmann 1 year ago
Might be worthwhile mixing in a little charcoal powder to the fillings. The fillings will have a lot of surface area for their volume, and the surface is likely to have have flash oxidized into rust. Charcoal might well reduce the fillings back into elemental iron, just like in a blast furnace.
steveBB30 1 year ago
Dan your just having to much fun, lol.
survivalweb 1 year ago
that song reminds me on "Weeping song " of Nick Cave :D
MrGroteska 1 year ago
I recommend putting your magnet into a bag to make removing your fillings easier. Don't melt galvanized steel or iron you will get zinc poisoning. purgatoryironworks or web search for more info.
BookGolem 1 year ago
I wonder if you got a small crucible suspended in the air and focused your beam how much better that would work. Do you think that would melt gold for casting if you used a crucible? Awesome video !!!
pvampire 1 year ago
do you use any filter for you camera when shooting this video?
cortana2007 1 year ago
From the research I just did, it appears that you could run steam into the exhaust intake on the turbocharger to drive the turbine.Then, by removing the manifold that surrounds the compression blower on the other side, and taking off the fan, you would have access to a drive shaft that you could put a wheel with magnets attached on for generation purposes! With a large enough parabolic reflector you could earn a living just by selling power back to the grid. Can't wait to do this!
venomousbird 1 year ago
@venomousbird
I'm not sure how your turbocharger would handle steam. Wouldn't it rust on the inside?
eazolan 1 year ago
@eazolan Depends on the material I guess, there is definately a certain amount of water vapour in regular car exhaust so I'm sure there is some measure of protection from rust in place.
venomousbird 1 year ago
@venomousbird
Under reducing conditions any rust will be turned back to iron. With exhaust gases any unburnt hydrocarbons will tend to collect on (initally) cooler bits of metals, as soot. When that heats up, it'll want to burn but to do that, it needs oxygen. So much so, if the layer is reasonably thick, it'll pull oxygen out of any surface rust,
steveBB30 1 year ago
This has been flagged as spam show
@venomousbird
The best way to find out is to do it. :)
eazolan 1 year ago
Also could use a tesla turbine to make power from steam. . . Ahhh the possibilities are infinite!
venomousbird 1 year ago
So you could put the metal in a mold to start out with and it would take on the form of the mold. Awesome, good work.
venomousbird 1 year ago
Just had a good idea, have you thought about testing a supercharger from a car as a turbine to make power from steam produced by a large parabolic mirror? I wonder how the efficiency would compare to a steam engine. Superchargers can be bought relatively cheaply compared to steam engines.
venomousbird 1 year ago
@venomousbird Sorry, I think I meant to write turbocharger, I always get the two mixed up, anyway I'm sure you know what I mean.
venomousbird 1 year ago
Would it not be easier to place a stronger magnet under the cardboard to attract the metal fillings away from the magnet that you had above the belt sander that caught the small pieces?
TheSkidpanCom 1 year ago
Could this lens melt platinum?
philipkclay 1 year ago
Tip. Put the magnet in a ziplock bag turned inside out helps to remove the filings. :-) I drag the magnet outside in a plastic bag to collect black sand.
marthale7 1 year ago
@marthale7 I was just about to post the exact same thing. I do that too when filing down something for iron filings. Also sticky tape helps in removing the hard to clean filings off your magnets if you like to keep them clean
JehuMcSpooran 1 year ago
hi dan,
just wondering how hot it gets where you are? over here in britain it may or may not be sunny enough?
cheers
tongueboy500 1 year ago
Hey Dan, since you like destroying stuff with your big lens, I was wondering if you ever tried to see if you could put a solar cell in water, and keep it cool enough to work, even when hitting it with concentrated sun light? How much power could you get our of a single cell?
sjh7132 1 year ago
you i think would get abetter result if you got the metal in a low or oxygen free environment. If you did that less of it would combine with oxygen also you if you got that you could create an insulated container that would allow you to melt more metal.
Prontest 1 year ago
you didnt happen to shine that lens towards your neighbors house did you,nice spark shots
garryentropy 1 year ago
as long as we're melting stuff with sun, check out this vid!
youtube(dot)com/watch?v=z0_nuvPKIi8
0reeferman0 1 year ago
Your film making skills are coming along so well dude. I started watching you a couple years ago i think, and remember thinking how amateurish they were. Now you've got actual editing, decent camera angles, and a good general flow to the videos. Congrats!
TheBetterGame 1 year ago
"carefully placing it on this.." CRASH
seriouslyWeird 1 year ago
lololol
going terminator XD
social3ngin33rin 1 year ago
Comment removed
social3ngin33rin 1 year ago
fire works :)
the new improved,
nearly never ending sparkler
social3ngin33rin 1 year ago
Tin has a melting point of 450f and 232c. Iron has a melting point of 2802f and 1539c.
Stime64 1 year ago
Hi Dan.
What is the max temp you can get from one of these large lenses?
Love your videos.
philipkclay 1 year ago
Who is the second music group or song name? That is some great instrumental there.
Anothercoilgun 1 year ago
French?
Anothercoilgun 1 year ago
wow if you had a big enough lens you could have a little foundry and pour up some ingots out of your scrap metal wonder if thats possible? wonder how big the lens would have to be to heat up a decent size crucible big enough to pour up some ingots? you could probably do it with aluminum easily.
shartne 1 year ago
wow that was pretty amazing never thought a fresnel lens could make such a high temp. Didn't see a whole lot of slag on top either hmmm!
blinking801 1 year ago
@blinking801 The amount of heat would obviously depend on the diameter of the fresnel lens. You darn well better have good eye protection, probably some welding glass, which you can select by number to suit purposes of proper visibility of your project.
bodryn 11 months ago
I think some sort of flux (maybe borax?) might help quite a bit to smooth up those steel joints and make them look nice and pretty.
I think you could melt a much larger piece of steel if you encapsulated the bulk of the metal in a decent insulator (like maybe in a piece of firebrick or pumice) and then exposed just the one small surface to the heat from the lens. That way you would not lose so much heat to convective flow to the air and or conductive flow to the metal stand it was sitting on.
GreedIsYourGod 1 year ago
That melted tin looked like a sexy leg with high heel boots. Mmmmm.
spinynorman1982 1 year ago
melt some coper into the water and buff it up on a wire wheel and it looks like gold dug up out of the ground.really neat to look at .
gjholcomb 1 year ago
@gjholcomb A wire wheel can really shine stuff up, even rusted steel. Then maybe buff it to a nice finish, and to keep it nice, maybe spray some clear lacquer on it.
bodryn 11 months ago
Hey Dan, I was never able to figure out how the Earth's magnetic field maintains itself if the very seat of magnetism is in a liquid state. How is it different from what you just did with melting that magnet?
eddiequest4 1 year ago
@eddiequest4 I guess that earth's magnetic field is more of a huge electromagnet.
FreeTalkLive 1 year ago
@eddiequest4 It is considered to be in a molten state, but no doubt moves very slowly. It does move - some atlases will show the position of the north magnetic pole over time and how it wanders around from year to year. Recently it has been moving faster.
bodryn 11 months ago
Tuhd like the accordion music
TuhdTheTroll 1 year ago
5:12 boiling steel
hassoun6 1 year ago
COol video!!
Merdam9 1 year ago
Cool ! Bottom line : GREEN is OK... UNTIL you have to work with a block of iron as big as a pack of cigs ]:)
Nice video though.
AtakanNW 1 year ago
this looks like so much fun.
The8sidedcircle 1 year ago
You sir, are a mad man. =D
mikeye9 1 year ago
if you were to heat up a ceramic pot with the meal inside would that work, could you test this for us.at least
luvu2luvme 1 year ago
would it be possible to use a fresnel lens with a crucible to do casting
metlhed7 1 year ago
Do you ever do any calorimetry calculations?
69iron69 1 year ago
If you wrap your magnet with plastic you could detach the filings easier...good job
depravedpuma 1 year ago
please try and see if you could weld to steel round stock together with the lens and the steel filings :D
hanzithaking 1 year ago
4:42 now that's how you make gold ! lol
CCSinventions 1 year ago
D-roh, I'm totally feeling the music man.
enticed2zeitgeist 1 year ago
Hi Dan, whats the focal length on that Fresnel?
sylvanenergy 1 year ago
@sylvanenergy 29"
GREENPOWERSCIENCE 1 year ago
@GREENPOWERSCIENCE Fresnel lens + today's class X solar event might make some interesting results. :P
alekkthewolf 1 year ago
@alekkthewolf However, different frequencies of light, and infrared and ultraviolet, focus at different points. Some wavelengths will not focus at all because the energy passes right through. This is why achromatic and apochromatic telescopes focus light so much better, to largely overcome these focus differences.
bodryn 11 months ago
How is your neighbor making out ?
cisjohn2616 1 year ago
@cisjohn2616 Hi,
He is doing okay. We just got the dogs their shots and tags licenses. He has insurance for his van 6 months. I will have updates on Roland on our other older channel ROJASDAN. Just need to edit. I will have a link too.
GREENPOWERSCIENCE 1 year ago 3
get some silica sand and make some glass from scratch
danz409 1 year ago 5
can you tell me the name of the screw-melting song?
vraciudude 1 year ago
@vraciudude "MACHO" it is free with "Soundtrack Pro" for the MAC
GREENPOWERSCIENCE 1 year ago
@vraciudude r u serious, u watched the entire video and all u have to ask is stupid name of a dumb song
niceslug 11 months ago
Did that tin bar have a CA Prop 65 warning label on it?
Fun stuff! I'd have thought that the steel wool would have caught fire rather than melt. Or caught fire prior to melting.
lostburro 1 year ago
you and your wife are great...love checking out your videos
spanishforfun 1 year ago
can you try to do large scale 1 lb aluminum melting in a microwave oven. Be careful.
pirucreek 1 year ago
This has been flagged as spam show
Well Dan, in some way not a bad idea to collect the steel but steel loses it's magnetisme at around 770C°. That's about 1418 degrees Fahrenheit. It would be more efficiënt to just hold the belt sander vertical and place a cup under it.
It's just an idea :)
greetings
piergewier 1 year ago
DAN!!! STOP SHOUTING AT THE CAMERA IN THE OPENING SCENES!!!
It's easier if you just speak normally, like you're talking to someone else in the room. Trust your microphone.
Fuzzycop 1 year ago
Well Dan, in some way not a bad idea to collect the steel but steel loses it's magnetisme at around 770C°. That's about 1418 degrees Fahrenheit. It would be more efficiënt to just hold the belt sander vertical and place a cup under it.
It's just an idea :)
greetings
piergewier 1 year ago
Quick Denise, grab the fire extinguisher Dan is playing with his fresnel lens again!
Great video Dan as always!
PuciferSam 1 year ago 2
Other than a "big kid's magnifying lens" being able to "burn cooler/bigger stuff" what *actual* real world use does a fresnel lens have in the alternative power scene? I've watched most of your videos diligently but have seen no evidence of the actual use of such a lens in the real world with real feedback/figures of how it contributes to anything because you can't even use it to focus more sunlight on solar panels and heating water for your geyser is like playing russian roulette. uncontrolled
AcidRaZor 1 year ago
@AcidRaZor Pehaps you can use it to heat water to generate steam and power a turbine?
slinkycat321 1 year ago
@AcidRaZor The only use I can think of for a frenel lens us running a Stirling engine, or a steam engine, both of which are difficult, and inefficient for the back yard DIYer. Your analysis is right, I think.
specallez 1 year ago
@specallez
I agree to some extent although I personally believe a steam engine would be completely do-able for bakyard-diy.
You'd need a solar tracking heating platform, an old wood stove for an example with pipe attachments and a water feed, a less than optimal range for the fresnel lens so that it didn't melt the oven although it seems that might not be a problem judging by this fellows attempts at a solid metal block, and lastly you might need 4-5 of these lenses.
But it's do-able.
88Kamikaze69 1 year ago
@88Kamikaze69 do-able, yes. practical? no. Remember, I'm suggesting something that everyone could use as green energy. If 200 million people had Fresnel-lens-steam-engines generating them electricity, you'd have 200 million potential fire-starters. Imagine a squirrel fucking with your tracker and the lens being off enough to set your lawn on fire (or even your house?) especially in dry areas...
AcidRaZor 11 months ago
@AcidRaZor I think the main idea here is to show others how the science and technology works, and leave it to others to think of real world uses. Certainly for me I can see uses like being able to build fires in wilderness emergency situations when you don't have a lighter or matches. A small fresnel lens would be very portable and light. Cooking could easily be accomplished by larger ones, solar ovens, etc.
bodryn 11 months ago
@bodryn there are better and safer ways to build fires if you're in a wilderness emergency situation. And face it, if you're IN the wilderness you have to be prepared (like the boyscouts say). You also don't have the sun readily available in an emergency since those things happen whenever they want, not during normal daylight hours only.
I do get what you're saying though, but I'm not really stupid, and for the life of me CANNOT think of a practical application this might have due to its power
AcidRaZor 11 months ago
@AcidRaZor It's OK with me if you are unable to think of a practical application for this. Maybe some others will, but what the heck, I think it's about science, and learning. I have been quite inventive in my life and often unconventional in my approach. There are always people saying "That'll never work", etc. My dad used to do that but I proved him wrong on a number of occasions.
bodryn 11 months ago
so how much energy did you save using that belt sander to particulate the material. shouldn't you be doing that with a treadle grinding wheel lol
sisseeboy 1 year ago
As You Know there is a potential of 1 kilowatt per square meter from solar energy
so this would be equal to
1 kilowatt hour = 3412 Btu
A typical portable electric room heater as
1.8 kilowatt hour = 6141 Btu
The amount of heat delivery of the acetylene flame is
1,450 BTU/CF at 6000 degrees F
ke4uyp 1 year ago
try to apply a hihg voltage at the ends of the nomore magnetic magnet... maybe it will regain some properties (if I remember correctly that's more or less how people make actual magnets)
Shannariano 1 year ago
@Shannariano As I recall, that method is more successful if the metal is heated at the time.
bodryn 11 months ago
@bodryn True, I forgot that. they do a double induction. One with high temperature metal (to "align" the internal structure) and the second with the cold piece to really give it a proper magnetic field. (if I recall correctly)
Shannariano 11 months ago
@Shannariano I'll take your word for it. Been a long time since I read about it.
bodryn 11 months ago
what camera do you use for your high speed photography
360ThickQuinking360 1 year ago
Bigger boys, bigger toys, lol
599891 1 year ago
Cool! I mean Hot! BTW, what's that tune playin'?
WizardOfChicamunga 1 year ago
Excellent video. :D I love the music too.
Alexkadjiro 1 year ago
Yes Dan what is missing here is a high level of BTU
Example 1 match stick equals 1 BTU at say 650 degrees
Now take 1000 matches and light them altogether this equals 1000 BTU
the temperature of each match is about the same but the combined amount of
Energy / BTU increased 1000 times.
Even large FRESNEL LENS can only produce a small amount of BTU.
ke4uyp 1 year ago
i demand more heat
robot797 1 year ago
That was cool Dan, specialy when that tin flows over the edge into the bucket. wow
Greetings from Belgium
Erik
rikkiesix 1 year ago
Could you use another lens in front of the fresnel lens to tighten the focal length to a smaller area?
frankcoffee 1 year ago
@frankcoffee I think the extra lens would melt the second lens faster than the steel. Much better to use mirrors or some other reflecting devise to direct more sun light onto a single lens.
IdahoViewing 1 year ago
Dan, could you heat a crucible enough with your steel inside to achieve the same effect? Be a lot safer for pouring purposes.
chop98 1 year ago
How about multiple lenses?Everybody wants to see that steel block liquified! EVERYBODY!!!
stlkngyomom 1 year ago
Dan, where did you get that Fresnel lens from. you could use that as a heater! just need something that can store heat like a dark stone .
twitchtwitchreel 1 year ago
Hey Dan, what do you mean by "newer type of (Fresnel) lens"?
infinitetease 1 year ago
@infinitetease They are about 15% stronger per size. They are a clearer than the traditional lens.
watch?v=eZx4XRk6rI8
GREENPOWERSCIENCE 1 year ago
OK. This is a spot lens, yes? How did you come by this type of lens - or are they being made for you?
infinitetease 1 year ago