do yourself a favour and get it sandblasted before you start! The metal on those seat bases is the worst rubbish imaginable! Forget the stamped out triangles and use upholstery edge clips behind a trim. You usually end up replacing the whole edgeing as they rot away, and you cant stretch the cover onto weak metal sides. lots and lots of tack welds, if you try to run beads on that most of it will end up on the floor! Good luck with it! If (when) you burn through, flatten some copper pipe and fix it to the underside of the hole with mole grips, then weld the hole up from the other side. Copper will drop of as it wont MIG weld. I have been doing this today on some plasticoat roofing panel tin that I have made an airbox out of can be welded, but very short spots only!
My Honda CB400A seat base is the same. I bought a complete brand new seat from the USA for $37 ! Worth checking before you start a welding repair.
good start ,, for regs dont rule out out of service date medical ones , thirty quid buys you one , service life and dates dont really matter much for welding duty , as long as it works .
good start ,, for regs dont rule out out of service date medical ones , thirty quid buys you one , service life and dates dont really matter much for welding duty , as long as it works .