Cutting torch

[yomax4]

wondering why no one has mentioned airco torches

Yeah. No more Airco torches as far as I know although some copies have popped up here and there since the 80's. The Craftsman torches over the years were normally Dockson or Marquette. The Marquette were the 1st I saw that used some Aluminum. It looked like it was aluminum. Had red and green knobs and the 1st flip handle. After those 2 went away the craftsman sets were Harris. Harris torches were developed after the owner was looking for a better way to cut gemstones., mainly rubies way back when.

 

[Arc weld]

I have a bunch of victor 101 torches they are small enough and can cut through 1/8"- 12" of steel with the right regular and tips.

I had a HF ripoff for a few years before some one decided to steal it from me, the finish was poor but it worked as good if you used victor tips.

The smith we have has issues with the style seal they use. The handyauto torches are very nice if you have a job that suits them. The other ones I use are more "wreaking" torches to me.

This is an untouched cut in 1" plate steel with the 101 torch with correct tip and pressure.

Do you mean 101 series tips? Actually a cut like that isn't all that difficult but you have to have everything set up right and good clean tip. I like to clamp the straight edge guide for torch so it can't move. I have a Contour marker aluminum magnetic straight edge that lets the tip guide along it with less drag than a piece of steel. A little preheat and then a nice steady even travel speed and you're set. A lot of people have jumped on the plasma bandwagon but I find it much easier to do nice cuts with a cutting torch.

 

[yomax4]

I'm a plasma guy but on this thicker material, I like oxy/fuel too. Not that the plasma wont do it but the torch seems more natural. I use a tangent type attachment for circles and straights.

 

[jwmorris]

The torch in my previous post was a victor 100, about 16" OAL. The tip used for 1" was a 1-101 #2 size with 40-45 psi oxy and 4-8 act.

I use different tips, pressures and speeds depending on what the book/results are (note the copied chart taped to the top by the speed control).

That cut was made on my homemade pantograph machine, that by the way uses either a hand torch or plasma cutter (note the bolts that remove the torch holders and cup/hose clamp for plasma torch) depending on what I am cutting.

Pattern in post #30 in this thread.
http://www.tractorbynet.com/forums/build-yourself/273086-show-what-tool-you-made-3.html

 

[jwmorris]

Made the above template to cut out 50 BMG hits on 1" plate.

The soft tape is just so it didn't scratch the desk top once I milled a slot to hold business cards in the top of it.

 

[Ed of all trades]

The torch in my previous post was a victor 100, about 16" OAL. The tip used for 1" was a 1-101 #2 size with 40-45 psi oxy and 4-8 act.

I use different tips, pressures and speeds depending on what the book/results are (note the copied chart taped to the top by the speed control).

That cut was made on my homemade pantograph machine, that by the way uses either a hand torch or plasma cutter (note the bolts that remove the torch holders and cup/hose clamp for plasma torch) depending on what I am cutting.

Pattern in post #30 in this thread.
http://www.tractorbynet.com/forums/build-yourself/273086-show-what-tool-you-made-3.html

Tell me more about the pantograph machine! How does the magnet and the drive work? Ed

 

[Oldpath05]

Thought I could spend 2-3 weeks looking at/for torches, my son couldn't wait, had to do a repair on his pulp loader, so we went out to the welding store bought a Uniweld 30SA-16", totally different from the Victor style we had, the trigger is on the bottom and there's only 2 knobs to adjust. Hopefully I can use to the trigger being on the bottom, but does seem to be a nice short torch, one funny thing though, it makes a purring sound when lit, it's different for sure.

 

[Oldpath05]

That is a real good home made pantograph machine, they say a picture is worth a thousand words, but I say a short video is worth a million, I'd like to see it cut that piece you have on it. That victor torch is the size I had, but it was cheap Chinese junk bought off ebay, $90.00, worked 2 hrs. got what I paid for.

 

[jwmorris]

Here you go.

 

[Oldpath05]

Here you go.

That was just amazing, I watched it several times.