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Topic Review (Newest First)
10-14-2019 08:13 AM
timothale
before plasma

I have an old air arc cutter, it uses an ac welder, a carbon rod and blows air to burn a big nasty kerf. sometimes when I am out of acety or oxy. and just cutting scrap to go in to recycle I dip 6011 rod in a bucket of water turn up the amps on AC setting and burn away,
10-14-2019 07:38 AM
chasracer Ha-HA!!


I think you're talking about a Mig welder which I have actually become pretty good with but I would like to get better.


Thanks tho....
10-14-2019 07:00 AM
bsa_bob2
Quote:
Originally Posted by timothale View Post
most plasma cutters work at under 90 PSI BUT your air needs to be dry/ a little bit of moisture can blow $ 100 in parts in a second. ask how I know. the type you will need depends on your climate and if your air compressor has a water separator. the disposable cartridges used for paint guns work for me. .



yup!what!! he said timothale had mine for 30 years,adjust the knobs heat range and wire speed- slowly- and try weld.....You will get excatly what you need with patience and time hth bob s
10-12-2019 09:24 PM
chasracer Okay, thanks for that information.


I have a separate air line that is setup differently for my spray painting work. I will start using that going forward.
10-12-2019 08:48 PM
timothale
plasma air pressure

most plasma cutters work at under 90 PSI BUT your air needs to be dry/ a little bit of moisture can blow $ 100 in parts in a second. ask how I know. the type you will need depends on your climate and if your air compressor has a water separator. the disposable cartridges used for paint guns work for me. .
10-12-2019 03:29 PM
chasracer
Low Buck Plasma Cutters

I recently picked up one of these low dollar plasma cutters and just had a chance today to try it out. It's a variable from about 15 amp to 50 amp and I cut some 1/8" frame material out to enlarge a hole using about 40 amp. What I don't know and the instructions are basically useless is how much air pressure should I be using? I did that cut and played around with it a bit more on some scrap that was thicker and it had no problem going right through it. But afterwards I was wondering if I should back off the air pressure or not. I made these cuts at about 135 PSI. Anyone have any idea?

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