I need a bit of help from the arc welders on here, I'm a bit of an arc novice on thick materials, I don't find getting a decent weld too hard, and everything I've welded to date has been more than strong enough, so I think my technique is generally "ok". Most of the stuff I've welded has been on the 3-5mm thickness and generally I have done this using an AC buzzbox using BOC Premium 6013 Rods in 2.4 and 3.2mm sizes between 80 and 130A. For my kit car project (locost) I need to fab some uprights from 10mm & 6mm plate. Now these obviosuly need to be strong as they are safety critical, and given the thicknesses my Clarke 160TM isn't going to cope too well, so I'm thinking arc is the way to go. So if you were welding a 90 Deg corner fillet in a 6mm to 10mm piece, what sizes rods and current would you choose and what prep would you do? Thanks in advance, Tom.