Propane welder

Well, I was watching 2 Fast 2 Furious at like 2:00 this morning ( yeah I know, omg hes watching 2F2F) but there is a part where he threatens a cop with a rat under a bucket on his stomach. He heats the bucket with the welder and the rat starts eating through his stomach and the guy starts bleeding all over the place with his intestines puoring over the table....

Sorry got carried away. But the welder thing he has is like a welder top thing screwed on a mini propane tank or something like that. I was wondering if it would work on a car. If so, where can you buy them and how much do they cost

Well, I was watching 2 Fast 2 Furious at like 2:00 this morning ( yeah I know, omg hes watching 2F2F) but there is a part where he threatens a cop with a rat under a bucket on his stomach. He heats the bucket with the welder and the rat starts eating through his stomach and the guy starts bleeding all over the place with his intestines puoring over the table....

Sorry got carried away. But the welder thing he has is like a welder top thing screwed on a mini propane tank or something like that. I was wondering if it would work on a car. If so, where can you buy them and how much do they cost


lol... they call those a torch.

Those are torches. Used for heating...

Like they said, just a torch, can be found anywhere for around $20.

Would a torch wor on a car, e.g. putting metal plates in when you shave the door handles

No.

Small Flux Welder is what you need to look for...

but you may as well get a good one with good potential current flow because as your skill increase you will do more and more advanced projects that require more penetration or thicker metal...and a little 90a $100 Flux welder wont do the job.

I would not reccomend a flux cored welder for sheet metal. Flux cored requires more heat and will cause more warping of the sheet. What you should use (for a MIG) would be some .025 wire with a Argon/CO2 sheilding gas. Or you can use a TIG or Oxy Acetelyne welder.

You cant use an oxycetalyne for welding sheet metal, well sheet metal that you care about not warping.

You cant use an oxycetalyne for welding sheet metal, well sheet metal that you care about not warping.

Thats something I am going to disagree with. A lot of welding for chopper gas tanks (18gage) is done with o/a. Many metal shapers choose O/A for welding sheet because the HAZ is spread out much more which reduces shrinking unlike the MIG and TIG. Also, o/a is often choosed for sheet because the welds are strong, yet they are very soft (unlike MIG) so they can be planished, wheeled, and shaped. Talk to any metal shaper, most of them will say O/A (a lot will say TIG because its faster). :)

Well if your right on the warping, you still have to atmit that with him not knowing how to weld, it wouldnt be a good idea for him to try that method. It took me months and months to get the hang of o/c welding, and I'm an experienced welder.

i mentioned flux welder because most cheap "MIG" welders are just flux welders and you have to buy all this extra shit to make it a real MIG welder

Just buy the conversion to make it MIG for $100.

or buy a better real MIG welder in the first place :D

or buy a better real MIG welder in the first place :D

Whats the difference between the Lincoln MIG 185 and the Lincoln MIG 185 (minus MIG conversion)? Nothing except one doesnt have conversion. They can both be "real" MIG's.

Thats something I am going to disagree with. A lot of welding for chopper gas tanks (18gage) is done with o/a. Many metal shapers choose O/A for welding sheet because the HAZ is spread out much more which reduces shrinking unlike the MIG and TIG. Also, o/a is often choosed for sheet because the welds are strong, yet they are very soft (unlike MIG) so they can be planished, wheeled, and shaped. Talk to any metal shaper, most of them will say O/A (a lot will say TIG because its faster). :)

Even though this might be true for pure fabrication, O/A is NOT for modern cars and bodywork. 1980's + cars use HSS (High Strength Steel) which depending on the alloy used, have a crystalline grain structure that can be destroyed if heated above a certain temperature (700 degrees f ). If the metal is heated to this point or above it will be severely weakened and will cause cracking. So its not practical or logical to use a 6300 degree torch for these jobs, no matter how careful the operator is they will never be able to control the flame to a degree where its safe to use. For this reason auto manufacturers recommend that HSS panels be welded by mig/tig/spotwelds. Not to say that ALL post 1980 cars/trucks use hss, but it would be a good idea to contact your local body shop, or refer to a Haynes manual to find the content of your metal BEFORE using a O/A torch, if not you could quickly do more harm than good.

Wow, I didnt know that. Most of the o/a work I've seen done is on hot rods and metal fabrication. Thanks for the insight!

Thats why the metal started getting alot thinner in the early 80's.

Wow, I didnt know that. Most of the o/a work I've seen done is on hot rods and metal fabrication. Thanks for the insight!

Heh, I thought that was to copy the Japanese. :icon16:

Another advantage of torch welding is that you can preheat and postheat the work piece without having to fire up another torch, saves time when working with the thin stuff.

That being said, I never gas weld.

Best bet is buy a refurbished or new welder off Ebay. You'll save alot of money in the end. Get a Lincoln wire feed welder, 115 volt power so you can run it off of household power easily. You'll still need to change out a breaker so it doesn't keep tripping it. That's against the fire code in most places, unless you have an electrician do it.

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=7531285485&category=45032&rd=1

That one is fine for autobody welding, but you'll need a gas cylinder as well. You can get one of those from a gas supply company, buy or rent, your choice.

...Another advantage of torch welding is that you can preheat and postheat the work piece without having to fire up another torch...

The preheat and post heat is a crock-of-shit. The preheating and post heating cannot be done properly with a torch and in fact does more harm than good. The torch does not slowly and evenly heat the molecules. Plus the temperature is not properly controlled.

A proper pre-heat and post-heat process takes several hours of baking in an industrial oven at certain temperatures depending on the material, hardness, and carbon concentrate.

The preheat and post heat is a crock-of-shit. The preheating and post heating cannot be done properly with a torch and in fact does more harm than good. The torch does not slowly and evenly heat the molecules. Plus the temperature is not properly controlled.

A proper pre-heat and post-heat process takes several hours of baking in an industrial oven at certain temperatures depending on the material, hardness, and carbon concentrate.

Damn striaght mike. Proved one of my shop teachers wrong on this. He said that pre/post heating can be done very effectivly with a torch as long as you have "the right touch." I called bullshit on this and challenged him to do it. I used the oven/kiln, he used the torch. Needless to say he ended up with a bent and burnt peice of shit mine was beautifull. Peace-