:biggrin::biggrin:Ok, ya got me. I remember during my apprenticeship having to take training in coppersmithing, welding and blacksmithing but I think the end result of that training only resulted in me being able to solder a leakproof joint in copper tubing, somthing that's come in handy a few times when the pipes have burst due to a Canadian winter and breakdown in the heating system, a bit of welding, both oxyacetylene and electric arc, mostly on old cars I've been working on and the fabrication of a GS screwdriver in our blacksmithing course that all us Airframe brats had to make as part of our training, I still had mine up until a few moves ago when it was lost in the shuffle. great bit of kit, could be used for it's original purpose but more often as a chisel or a pry bar, made from 3/8 hex rod, heated and hammered into shape then filed to make it into a useful tool after which we had to heat treat it to harden and temper it, using an old coke furnace and bellows prior to quenching when the right colour was reached during the cool down process. I would have to look that process up on line now though as it's been over 50yrs since I did that though I have used a similar process to customise a few spanners then re-harden them over the years as well as hardening home made bucking bars made out of sections of railway tracks, cut and shaped to fit a particular job.
