Next to cut up the various heavy angles and plates for the tank brackets. The angle is 75 x 75 x 10 mm and the plates are 80x12 and 130x12.
Got them all cut up on the Pedrazzoli chop saw, was just cutting the last cut of the last piece, and there was a 'ping' followed by the clatter of something dropping to the floor

The balance spring that holds the chop saw up had broken at one of it's hook loops. This is a beefy spring wound from 6 mm wire with twenty turns on a 35 mm major diameter with hook loops both ends.
.... go on empty your pockets, some one must have one

I think the next job is to cut the slots for the 'jaw plates' which seem to be a nominal 20 mm thick. If I have a suitable broaching cutter for my magnetic drill I'll drill holes for the ends of the slots and cut the rest with an angle grinder.
It's probably safest to then weld on all the various brackets, and drill the holes after welding to get them in the right places

One of the plates is slotted, so that will probably be done on the Bridgeport