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Jun 21, 2016 11:57:10 GMT
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I have a migmate. Owned about 8-10 years but has'nt done a lot of work really. Its had the wire feed pipe changed as the original plastic one was curse word. Yesterday when tacking a bike frame together I heard a funny noise. Reached down with bare hand (curse word, I know) and moved the cables etc and it was hot. I was in the process of trying out a feed brace I made. When I opened the torch the switch wire was loose. Not burned, more frayed (from use?) Anyone know what happened?? I now need a new gas pipe and wire feed and switch wire.  DSC_2796 by quickrack, on Flickr  messenger-quick-cam-1466451117759 by quickrack, on Flickr  messenger-quick-cam-1466444957144 by quickrack, on Flickr  messenger-quick-cam-1466451216612 by quickrack, on Flickr |
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slater
Club Retro Rides Member
Posts: 6,390
Club RR Member Number: 78
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Why did my welder attack me??slater
@slater
Club Retro Rides Member 78
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Can't really see from the blurry photos but somthing obviously shorted. Could be the switch feed or even the main weld current going to ground.
Perils of using crappy kit I guess.
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Jun 22, 2016 19:51:44 GMT
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Is it crappy?? It was about the best 'hobby' welder available when I bought it.  Anyway it has to be fixed as I cant afford anything else. |
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Jun 22, 2016 20:03:20 GMT
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Could the new brace have shorted to something livening it up when it shouldn't be?
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Jun 23, 2016 11:48:32 GMT
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Could the new brace have shorted to something livening it up when it shouldn't be? Cheers. It was the only change so I will start there looking for the short. Ordered new gas pipe. Very frustrating.... |
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Unfortunately these SIP welders are poor quality, I have one as a compact thing to tuck into my garage (my decent one is in my workshop on my parents farm) and the build quality is very flimsy and there's a good reason why there's loads of modification threads online for them. That aside mine functions well (after the torch melted itself and I replaced it with a decent one!) and does a good enough job for most little welding jobs but certainly not ideal for a full on resto. When I move back near the farm I will keep this one as a gasless welder for emergency jobs when it's windy, at least until I get an inverter welder.
The brace shouldn't cause a shorting issue however if the switch wire is loose then that is your likely culprit and either needs to be tweaked a bit with pliers or a replacement end fitted. Have you taken the panel off on the other side to check the wiring in there? Might be worth a look just to be safe.
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'73 Commer Campervan under full restoration, '83 VW T25 Doka under partial restoration to become rolling project, '04 Saab 9-3 Vector Sport modified and certainly not finished...
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The second photo shows evidence of a short . Looks like the insulation on the power feed wire to the gun has been abraded by the ribs of the metal wire feed pipe.
I too have a SIP 130 T which I bought new over 20 years ago . Granted it wasn't used for 16 of them but in it's defense I spent two years restoring my E24 and it did a LOT of welding and gave me no problems at all and produced good strong welds with great penetration. There are much ,much better sets on the market nowadays but with a little care and maintenance it'll do the job.
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