Itoldyouso is right, that welder is NOT good for welding frames and I should have mentioned that but I was just saying that if you weld it yourself (not talking about with THAT particular welder) then do a root pass and then filler. You need a bigger welder up to 220 outlet. Also, IMO I like to LEAVE the welds exposed instead of grinding them down, I do not like them ground down because I don't think it's as strong. Some people will argue and dissagree with it but either way right or wrong I don't trust it so I wont do it.