@ai6yr I've got a 120V stick welder, made by a real brand (Lincoln). Not only is it VERY tricky to get a good weld, it's even trickier to find an application where this is actually an appropriate tool. Basically no penetration at all.
The kind of lighter materials it could handle would be worked far better with a MIG or TIG rig, not a stick. Don't bother with tiny stick welders.