This has taken me weeks but it's looking good. Decided I wanted an overall screen on the torch so it's a bit chunky. The torch height control circuit should be fun in a nightmarish sort of way. I think I will use a double fibre optic link to control the cutting head, I'm getting a bit paranoid about the 100 Amp cable interfering with my data lines.

I made the little nut that moves the torch up and down today. Mild angst when I squared out the ends of the slot for the fork it bears against, I was probably only a few thou and half a degree out but it still looked a bit naff next to the CNC cut parts. Luckily it's hidden behind a fancy aluminium plate :D

Next the rod that connects the X axis pinions at either end of the gantry, maybe the bracket that holds the stepper driver and Z axis driver, there's a lot left to do.