Plasma Attempt #2

[Robin Hewitt]

Bolting the HiWin rail from behind on to box section meant running spacers inside. I used 3/4" aluminium bar

I suggest we make a tool to place them, my son thinks he can push them into position using the file with a 1.5m handle we used to deburr the hole internals. The 23 bolts only took him a couple of hours, I cut the spacers for a good fit, after about an hour of hammering and cussing I remembered I had some copper-slip

Thought I'd get a pic before he welds in the end plates and the spacers are never seen again.

The rail mounting holes are drilled oversize so I can put the rail level even if the box section sags a bit.
I have a cunning plan to mill the gantry ends dead square