Dynamic Power 130Amp MIG Gasless Welder Power Tools

Cheap and garbage type off welder – Hi there, this welder I am asking about parts for more than likely you cant buy parts for it because with this type off machine its called once broken always broken plus the company that brought this machine into the country does not have an email to ask about parts for it. The good thing is I did not pay much for it. Show details

It’s okay – Being a welder you’d expect penetration, but you’re really getting what you paid for. I’ve own this for about 2 years now, and essentially this thing is only good for 1mm metal. Unfortunately no amount of settings can gain penetration without prior heating the metal. Good for small jobs Show details

Poor quality control – After picking it up from the post office I plugged it in turned it on and nothing worked. After opening the side panel I found a wire that had fallen off a connector after pushing it back on every thing worked fine. Since then it has been working fine with good results.  Show details

not worth the money – Steve 1973 couldn’t of said it better my self and the exact same thing happened to me, it fried my trigger receiver no longer useable and melted my rubber cable. Only been used 3 times. Band name is the better way to go if purchasing a welder. Never choice cheap brands with out warranty.  Show details

Didn't last very long – Worked OK. Rubber cable kept melting. Finally, the whole rubble cable connecting to the trigger or the handle itself had a fault where the wire can't pass through anymore. No replacement parts available. Seems I need to throw it away. I should have spent the extra $100 and bought a name brand.  Show details

Not a good buy – I purchased this welder for a couple of light jobs, including replacing the tray in a small box trailer. Cost was $149 delivered. I could have used my reliable, 35 year old stick welder, but it takes a lot of practice to weld light metal. I thought a gasless MIG welder might save time. Gas would no doubt be better, but I couldn't justify the… Read more

cost of bottle hire for the occasional use I intended.

The welder was supplied without wire, so I also purchased a spool of 0.8 gasless wire. The helmet and brush supplied were useless and I discarded them. I was surprised it seemed so difficult to lay down a nice bead. Splatter was particularly bad. At first I blamed my technique, but after watching a few videos on utube I decided the welder wasn't helping me. After doing some more research I realised the welder is AC, not DC! Not recommended for MIG. I could have discovered this from the compliance plate if I had known how to interpret it.

The best results came from using the low voltage setting and a fairly high wire speed. I persevered and finished the main job - not great, and a lot of grinding to remove faulty beads, but I managed. I left the welder in a garden shed for about 8 months before I started the next job. I noticed a very small amount of white corrosion on the wire before I started but went ahead anyway. Big mistake! The wire kept on sticking and finally wouldn't feed through the liner at all. There was a discoloured patch near the trigger where the wire stuck, and I suspect the wire had fused to the liner at some stage. After a bit more research I discovered the current is supposed to pass to the wire through the copper tip. I had used the same copper tip all the time, and maybe the hole had widened so that it didn't always make good contact with the wire, causing the current to flow elsewhere from the liner.

I couldn't find an identical liner but purchased something similar from Gasweld for $16, When cut to size it fitted perfectly. I also purchased 5 tips for $8, realising that the same item is available on eBay for about $2.50 for 10. But I didn't want to wait 3 weeks for delivery.

When reassembled, the wire feed seemed to run perfectly - for a while. The it jammed again. Not prepared to give up, I sprayed the spool of wire lightly with WD40. This is not recommended, in fact it is actively frowned upon in the welding forums, but it cleared the problem. There was no noticable effect on weld quality. In fact the welds seemed to be slightly better, perhaps because the wire feed was more even. If the problem happens again I'll be tempted to use a length of flexible curtain wire for a liner, which others have reported to work fine.

So what are my conclusions? If I were to cost in the value of my time and the cost of wasted gasless wire, the welder was not cheap. I could have spent $400 on a small DC MIG welder and achieved a better result.

I'm afraid I couldn't recommend this welder to anyone. A competent welder will be frustrated and a beginner will give up because it is too difficult to use.

Maybe later versions of the WM-130 are DC, so the results may be different. I note that some reviewers talk about reversing the polarity, so this implies DC. It wouldn't make any difference with AC. The lack of variable current control remains a serious flaw, but maybe forgiveable on a cheap welder.

Would have been ok if it worked – I purchased the welder through EBAY and on first try the wire feed didnt work - spoke to the seller --it was tested - cost to ship back was more than the welder was worth have tried to use it several times but intermittent reliability of the wire feeder makes it useless - its not the mechanics, on further testing but a rubbish speed controller dont buy this type of technology unless you can drive it back to where you got it

Polarity Change - Red (+) wire vs Black (-) wire – @ Boonie0 I was wondering which wires are changed. I can find a thin red wire coming from the hand-piece and a thin black wire coming from the earth clam cable. They both originate from a small plug which is plugged into the circuit board. Are these the wires which you changed over?

Polarity Change Needed – Ok tried to weld with flux core self shielding, this machine does not have a polarity - & + changing knob. After many welds it would not pool and create a good penetration. After 1 week of eating me up inside, I finally cut and changed the dark blue wire and red wide that goes to the wire feeder creating a Neg polarity. After connecting the blue… Read more

to red and red to blue it works fantastic as it should. If the company is reading this please put a polarity changing dials, then this machine would be well worth it's money. Inexpensive, good machine No Polarity changing ability unless you cut and change the wires yourself.

Lasted almost an hour then dead – No power to the mig wire and of course the manual is of no help at all. Supplied a spare fuse but can't see a fuse holder to check it. There is no support available in Australia or advise about what to look for as the fault. Tried to locate the manufacturer on the internet but no luck although I know it is made in China. I did expect it to last more than an hour being a new welder.