Greetings all, and welcome oztayls,
Gotcha, thanks Norm. I'm not really that keen to get the excitement of a flash fire out of the project!
I might just weld on some new stubs as you suggested. Gosh, my old welder will need some dusting off.
Yep, welding on new stubs was the factory repair procedure for these, back in the day.
I bought one of these Chinee inverter welders for $100 delivered about a year back, and I like it a lot. Compares favourably with the first-gen ESAB Caddy compact inverter units, like I used to use at work.
Did buy it a decent Tweco electrode holder though, and binned the 'face shield' that came with it! I already have 3 quality welding helmets...
https://www.ebay.com.au/itm/ARC-220...ine-IGBT-Portable-10A-Plug-/272834881672BTW, the correct way to stop that crack propagating further, is to drill a small 'stop hole' at or just ahead of its inner end. ~2-2.5mm drill bit is what I'd use.
That screw will actually hold the edges apart, and cause further propagation.