Cutting a Circle With Oxygen-Acetylene - Kevin Caron

[stillbashingmetal]

How do you know when to start 'cutting', ie moving the torch forward?

what do you look for as an indicator ? Thanks

[kevincaron]

@stillbashingmetal Before you press the lever to start cutting you are watching the metal under the flame. When it goes molten give the lever a little touch to start the cut. If the metal is hot enough all the way through it will cut through and blow out the bottom side. If the metal is not hot enough you will get a small divot in the metal and you have to heat it up some more. Once you get a hole through you just have to keep the metal in front of the torch hot enough to cut cleanly.

[stillbashingmetal]

@kevincaron Hi. Many thanks. Kind regards.

[FTMJarra]

@kevincaron you'd get sacked from my works for burning that poorly and you're even using a trammel .!!!!

[kevincaron]

@FTMJarra Which is my I work for myself! You should try it sometime.

[NarrowMindedNick]

@kevincaron A.K.A. can't find a job, because your skills are inferior.

[kevincaron]

@NarrowMindedNick Have my own studio my friend. Bought and paid for. Also have money in the bank and all my bills are paid. I own my truck free and clear as well as my home. Take your inferior attitude and stuff it!!

[theflyinwop]

Good idea kevin.I remembermy Dadfrom the old old school.He was master with an acc/oxg set up.He didn't have a cuttng tip,rose buds or other fancy tips.he would cut

metal with just a regulator tip,depending on size of material,dictated what size tip.

he showed me how to do it as a kid,and sometimes i still do when i'm too lazy to switch out tips and go to a cutting head No slag either..My favorite is the Smiths unitsmade in Minn.,op quality stuff

Paisano

[kevincaron]

@theflyinwop Cool! Dads have been know to teach us some great stuff.

Do you see an echo in here??

[theflyinwop]

Good idea kevin.I remembermy Dadfrom the old old school.He was master with an acc/oxg set up.he didn't have a cuttng tip,rose buds or other fancy tips.he would cut

metal with just a regulator tip,depending on size of material,dictated wht size tip.

he showed mehow todo it as a kid,and sometimes i still do when i'm to lazy to switch out tips and go to a cutting head.My favorite is the Smiths unitsmade in Minn.,op quality stuff

Paisano

[spelunkerd]

Speaking of old school, I once worked at a shop where they had a robotic machine to cut these circles in 1" plate. Cuts were like glass, unbelievable. We never used blowback arrestors then, and I remember shutting our torches off like you do here. I used to hear a lot of 'popping' from guys shutting down the wrong way. Nobody died, at the shop where I worked. I only recently learned that you're supposed to shut the acetylene off first....

[kevincaron]

@spelunkerd Cool, love to hear how other people work. Thanks for the look in to your world.

[VisorBlue]

Ahhh, Oxy-Acetylene. :-) Love the ending.

[jameasun]

Usually I can get pretty close to the center, but I am always trying to find a better way of doing things. Thanks...

[CBaughman]

I got an idea how to shoot mistakes...instead of, "Hey Kevin, what ya doin'?" The voice could say, "Kevin! WHAT ARE YOU DOING?" I suppose you could throw a small expletive in there somewhere...

[kevincaron]

@CBaughman Or "Hey Kevn, is it supposed to look like that??"

[kevincaron]

@CBaughman Or "Hey Kevin, is it supposed to look like that??"

[earlie47]

This is pretty cool, no, make that hot. I got a charge out of it but not a crank.

[steveo928]

dang thats a big chunk of steel

[mustie1]

so thats how they make manhole covers

[SmokinPHorses]

Cool idea with the battery clamp...gotta make me one of those.

[MQQMAN434]

Hey Kevin, I would like to ask if you could show some tips with stick welding if you know to? Though if you already have a video up about that, could help direct me to it. thx!

[giter1234]

@MQQMAN434, Yeah i agree, we need to see some stick welding.

[kevincaron]

@giter1234 All right all right, keep your panties on. I will shoot something next week and post it up. I will have to spend the time practicing just to remember how. Let me call some old guys, maybe they remember how to do old school welding.

[strube1369]

Cool bushing idea! That thick of steel helps a guy remember to watch his feet, huh?

Thanks to "the voice!"

[dudemancalidude]

that steel is thick....nice video.

[jameasun]

So Kevin, lets say you find a peice of circular steel scrap. How do you go about finding the center of that circle to drill a hole?

[kevincaron]

@jameasun Great question! Take your tape and find the diameter. Mark that on a straight edge and make several lines across the circle. Where they meet is the middle. If you are the type of guy that has to use math, try the diameter divided by two. That will give you the radius. Measure in from two points and that will give you the center.

[CBaughman]

@kevincaron Don't think he was referring to that method. I think he is trying to test you :D Correct way would be to draw a chord (or a line) across one edge of the circle. Find the center of that line and draw an intersect line, 90 degrees towards the center. Do the same thing on a different area of the circle and where both of your intersect lines meet, that should be the center.

[kevincaron]

@CBaughman Yeah, I kind of figured it was a test. Oh well, I was never any good at tests anyway. Speaking of tests, maybe it's time I shot a video of welding mistakes just to see how many mistakes you all can catch me at. Hmmm..... Have to talk to "The Voice" and see how we can shoot it .

[CBaughman]

@kevincaron i.e. You can find an example on any google search of how to find the center of a circle :D

Or you could use Thales Theorum with any right angle object/square.

[eatmycakeshow]

As always, great video Kevin!

[Dodershift]

Very clever, I'm impressed.

[bjensen5]

Cool Idea - Thanks for the videos!