主要是送带盒不好，里有两个塑料齿轮易坏。有人建议用lincoln牌焊丝，有人建议改良：
I had both the old blue version of this machine, and the new version. The newly added "cold tip" feature is a nice addition, since virtually every wirefeed welder on the market has this feature. Still disappointed with the lack of voltage settings (only 2, marked "HI and LO).
The single biggest problem with this machine is that it outputs AC current. This results in ugly, spattery, porous welds with very low penetration.
There are NO wirefeed processes that should be done on AC. MIG is done DC+, and flux-core is done DC-. I added a bridge rectifier and a power factor correction capacitor to mine, and it turns it into a totally different machine, producing clean, smooth beads with good penetration. The minimal cost it would take for harbor freight to add these features into the machine would be well worth it, and make this welder really worth the money.
If you're willing to read up and do the modifications yourself, this can be a GREAT little machine.
