I was having trouble with my MIG today, MM185. The wire would melt back to the contact tip and stay in a molten ball there and the arc was very erratic. I checked my ground clamp, the usual culprit, and wire brushed the terminals clean. This had no effect, so I cleaned the terminals in the machine, changed the contact tip, cleaned the nozzle, checked the c25 flow, reset the drive roll tension, and it still would burn back and arc funny. Then I decided to change the wire spool to a new one, even though the old one still has a couple of pounds on it. The old wire is the praxair brand prostar er70s-6 and has a plastic spool, the new spool is Hobart er70s-6 and has a spool made of 1/8" rod. I put the new spool on and as is spun it would hit the screws inside the case and arc. I ended up bending the outer edge of the spool in a bit but am not thrilled with this setup. Has anyone else experienced this? what did you do for it?
After I got the wire up and running it welded much better. I am not entirely convinced that it was the fault of the wire for the machine to weld funny like that. Has anyone else experienced that, and what did you do for it?
Thanks for the help.
After I got the wire up and running it welded much better. I am not entirely convinced that it was the fault of the wire for the machine to weld funny like that. Has anyone else experienced that, and what did you do for it?
Thanks for the help.
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