sorry about the sideways pics
For 1/8" 85 to 120 amps is what my chart recommends. Just a flat with no edges to burn requires a little more power. Find a place to rest your arms that you can move your hands comfortably through the length of the weld. If you are an energy drink user and not planting your arms it will be hard to get consistent puddles. If you lay a plate down flat on a thick table it will suck a lot of your heat out too.Forgot some detailed numbers . I have the machine at 60amps , 1/8" metal cleaned with acetone, ER70s rod 1/16"