Metal Casting at Home Part 7 Oddside Mould Making

[langer1972]

Watching this is so good for my head great stuff to watch and very relaxing.Oh and btw you have a great talent.

[reymer101]

does baby powder affect the green sand properties?

[myfordboy]

@reymer101 No, I have used it hundreds of times on the same sand.

[luvbigexplosions]

where can you buy greensand or do you need to make it yourself if so how do you make it

[myfordboy]

@luvbigexplosions Please visit myforboy.blogspot.com for the answer to this question. Look for the sand for casting page.

[lunarrn]

Thank you for this excellent tutorial. What is the little spatula tool you use?

[myfordboy]

@lunarrn Its an artists pallet knife.

[lunarrn]

@myfordboy Thank you.

[danietkissenle]

where dose one learn to do this

[myfordboy]

@danietkissenle All self taught from books.

[clonetrooperx39]

is that sand stuff reuseable???

[myfordboy]

@clonetrooperx39 Yes, over and over.

[clonetrooperx39]

@myfordboy where can u get it????

[myfordboy]

@clonetrooperx39 Foundry supplier or make your own from playsand and bentonite.

[myfordboy]

I like to do it this way. On this piece it ensures sand is packed all around the pattern. If the pattern was first used the other way around and the sand cut back to the curve you could not guaratee sand was under the curve or around that small pertrusion.

[anonymic79]

I don't understand why you didn't just make the second box first. If you'd put the part in with the straight edges down and packed the drag, you could have cut down to the curve and packed the cope as the second box instead of the third. MrPete222 has a video showing what I mean. Is there an advantage to doing it your way, or does it just come down to the part being made?

[GUNDAMZGOK]

hix..i was try, but this jobs is very harm and smell bad, and almost the chemical is very expensive and rare in vietnam t_t!!

[snipe609]

Thanks for the help myfordboy

[snipe609]

Hi myfordboy couple questions can you use any type of sand and where do you get the hardware for the mold box that holds the two together ,I have never done this before but I'm going to give it a shot

[myfordboy]

@snipe609 If you cannot get moulding sand from a foundry supplier try making your own by adding up to 10% bentonite clay to play sand.The hardware is just plastic blocks sold here for furniture making. The block has 3 holes, a metal dowel is used to locate them. Wood or metal could be used instead.

[1220975]

Wow, what a pro

[myfordboy]

@digital4282 I am just self taught.

[fly2000jtb]

the sand you use is from a foundry with the bentinte clay allready in it? is that why it is black or is it from you reuseing it so many times? cool videos Joseph T fly2000jtb

[myfordboy]

@fly2000jtb I think the sand is a natural sand. It was dark brown but has darkened with use.

[hambone155]

could you have put the part on its side for the two part mold?

[myfordboy]

@hambone155  No.There are 2 ribs on the underside that prevent this.

[syoli23]

u put only the riser..how u apply gating system? & how to poured that without runner & gating

[myfordboy]

On small castings I just use the one riser/runner and pour into that. Ingate is at the bottom.

[death2148]

Would Baby powder work instead of Talc? ;)

[myfordboy]

Yes, I use Johnsons baby powder sometimes.

[sdably]

@death2148 baby powder is technically talc powder just with perfume, and some other things like anti irretants etc... added

[ppgpop]

I see that your flask walls are smooth. I cut a couple of lines (4-5mm) into them with the table saw. That gives the sand something to hold onto and the mold cannot slip. I had a fun moment when I had a stam moment and magically the entire mold rose out of the flask. Didn't expect that... haha. Early experiments lol.

[TheBattleWagon]

I had an idea that you mite like? I was thinking metalurgy wise could you pour Spring brass in to a mold with a suported steel sleave ,for say a cyilinder? And have the brass bonded in to the pores of the surface as one would do when brazing?

[myfordboy]

Idea would work ok but I prefer a seperate liner for my engines. It can be bored and honed before fitting to the engine.

[TheBattleWagon]

I was thinking mor along the lines of heat displacement. As the brass dissapates heat faster. and it could still be sleaved.

[TheBattleWagon]

I noticed you have a drop collum for the pour, but you dont use any vent or "sprue" holes is there a reason behind this?

[myfordboy]

I seem to get away with no vents on the small castings.

[d5711]

will that furnace heat and melt cast iron about 1500c do you have plans

[myfordboy]

Its not suitable for cast iron. Could melt brass. A cupola furnace would be needed.

[arnebrat]

Call fom Norway. Thank you for solving our problem with this video; how to make a mould for casting a Brass signal cannon. Witout having to part the woodwn model in to parts ...Your videos are great - it look so easy when you do it.

Thank you !!

[myfordboy]

Pleased you found the video helpfull.

[steppapajon]

I have watched all seven parts of "Metal Casting at Home" and I wanted to say thank you for taking the time to make and post the series for the rest of us. Your very clear methods are easy to understand and very helpful to a beginner like myself. Again thank you,

Jon

[barumman]

I wish you wouldn't make it look so easy.

I take a lot more care with disastrous results. :)

[soverton]

Great work! Very interesting

[oheix]

Sweet

[EmperorAst]

Nice presentation.

Any of you that want larger quantities have in mind the method with a follower.

[scaledtanker1452]

Nice work, thanks for sharing. Once I get my workshop finished I will do some casting of my own, I can't wait.

cheers Jim

[AlienNRG]

Thanks for the video.

[johnrob281]

Excellent videos on metal casting. I've learned a lot by watching them. Thanks for taking the time to put them up. ---John---