gasless MIG welding tips needed

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steptoe
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gasless MIG welding tips needed

Post by steptoe » Sat Mar 30, 2013 3:44 pm

I got one of these (at the top)

http://welder.net.au/old_site/nuweldmig.htm

100Amp in gasless only , got it a few years ago at what was likely a good price - $220. Reason cheap was supposedly because Nuweld suppliers were putting their name ROSS on the new ones. Found a reference to Mitre10 selling same at 339 but was with a stand etc so hard to compare the value I got at the time.
I make the mistake of no practice, just get into the job and may be why my weld skills dropped off with my stick welder.
Think I am finding I have trouble with both getting that balance between getting proper welding, burning holes or no stick!

Have only just learnt different wire thicknesses exist for gasless MIGs and do not know what size I have in use or the spare roll.

The gasless has welded wire mesh to a trailer cage down to the tiny,tiny retainer clip ear on clutch throw out bearing that got broke in transit from the US me thinks...and just recently managed to endure a lump of molten stuff burn through two layers of cotton, brand me in one spot and burn a track, twist 90 degrees and sear me again 20mm away :(

I won't mention the loose gas fitting on the flame torch that suddenly turned from 'air' under my hand to a ball of flame under the car :oops: how the car cover above did not catch, taking my car and garage with it have no idea :oops:

So, questions:

should I be touching the wire tip to the work prior to squeezing the trigger, or just a pffteenth off the job ?

I do have to go back and look at SilverSams welding thread but fear his welding was first class and with gas.

The secret with panel steel on our subes ~0.9mm must be zap, move on zap, move on - stitching? And return to cooled panel to repeat process until all joined up?

If you have any tips for gasless MIG welding with budget end of market equipment ..please .........

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Silverbullet
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Post by Silverbullet » Sat Mar 30, 2013 4:00 pm

Me first class? PAH! Been really struggling lately. With MIG you don't touch the wire to the work before you start, just a pffteenth away like you said and while you're welding (called the "stick out length") And yeah with panels you basically make a row of spot welds on top of each other although I dunno how this would go with gasless. I've never used gasless wire but isn't there a coating of slag after you finish welding? This would probably interfere when doing rows of spots.

the guy on youtube you linked to once about sharpening spot weld drills, restolad has a couple of good videos on welding panel steel.
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steptoe
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Post by steptoe » Sat Mar 30, 2013 4:10 pm

Yeah, just been through your thread - must have mistaken someone elses welding :D

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