Sodo
Elite Member
- Joined
- Apr 21, 2012
- Messages
- 3,296
- Location
- Cascade Mtns of WA state
- Tractor
- Kubota B-series & Mini Excavator
You were doing so good until you got to this paragraph. I used to have a 175 Miller. Traded it for a 250 Miller. No comparison. Much stronger welds.
If all you weld is light metal, the smaller welder is fine. If you weld 1/4" and/or above, the smaller welder will begin to exceed it's capacity and the weld strength will suffer.![]()
Will suffer? Or could suffer, in the hands of an inexperienced welder? As with most things.
The entire bucket, and FEL arms on my Kubota B2710 can be welded with a (good) 120v MIG. The cutting edge is 3/8" and would need to be preheated (IMHO). I rarely see projects on TBN thicker than 1/4". There are some, but basically, 1/4" material is not "thin" by what shows up on TBN. Totally agree though that 1/4 is at or near the max for 120V, requiring more technique and experience.
Weld strength CAN suffer. It's very rare to see a pic of a broken weld on TBN. It must happen, but not often enough for pics to show on TBN. As a consequence, members can't really learn, they just have to repeat what others write. Inexperience, poor preparation doesn't help in welding, same as with most things. Agreed, "extra' power" can make up for some of that, and burn holes too.
It was only a year (or two?) ago 120v MIGs were only good for 10ga. Since then, the age-old techniques that the 240v crowd gets to use on thicker metal, (preheat & Bevel etc) have been graciously extended to 120V welders. Experienced 120v welders were already doing it, of course. Things are much better since 120v has been legalized. :laughing:
A drawbar of 1 1/4 x 2 1/2 is a strange thread to be discussing 120v MIGs. It can be done though, in a pinch, with a large torch, or campfire for preheat.