I THINK it was in this forum I found a thread about DIY Intergrips for assisting with butt welding but for the life of me can't find it! I've been playing with some 15mm square box section but think I might have to up it to the 1" I've also got. For the "blade" I've been playing with regular hacksaw blades, might need to find something else for the 1" box but still around 1mm thick. Would ordinary .6 / .8 MS mig wire be OK to weld the stud to the blade? Anyone recall such a thread?