A "tale from the shed" rather than the
"road" since I refuse to ride anymore until the cold weather stops.
A MIG welder is a useful tool for any biker. It can weld
thin steel so works well on exhausts etc. I bought mine a few years ago but it
isn't very good. Its a SIP HandyMIG. The main problem is the wire feed. The
motor isn't very powerful and the drive often slips. This causes the feed to be
uneven and the welds to be poor. An improvement I did, suggested on the
internet, consists of a metal strip to hold the drive wheels in alignment. The
plastic holder deforms and the drive is reduced. This helped some but the
problem seems that the resistance in the plastic liner is too great. I measured
this at 4 lb. So I replaced this with a steel liner.
MIG welder
I'm using flux cored "gasless" wire. This is
convenient and economical. The gas bottles the welder uses last only minutes.
I've added a steel strap between the drive roller mounts to
improve the feed
Measuring the force needed to feed the wire
Plastic liner (top) & metal liner (plastic outer in
place & removed)
The feed was smoother with the new liner and reasonable
welds are possible.
We've worn out a few small portable Hobart mini-mig units at work. Recently we picked up a Miller 'suitcase' mig unit. It's ok for small jobs, but has a very tiny bottle and spool of wire.
ReplyDeleteAt home I still have an old Lincoln AC arc welder and my oxy/acetylene rig. Would like to purchase a Tig welder before I retire. No worries about wire feed mechanisms.
When the mini migs were running their best I was getting some pretty decent beads with them. We run a CO2/Argon mix that was pretty good.
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Thanks for such great piece of content.
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What a great DIY. I'd probably bought a new equipment if I were the one experiencing this but you did repair your welder successfully. Hope it can weld more in the future. Keep it up!
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