Decided to fit the main bearing caps, these are meant to be fitted with 7/16 Whit studs and nuts, but with a nod to modernity we broke the mould and went for UNC!!!

Mainbearing caps and studs

It transpired the threading 7/16 rod with a tailstock die-holder was ambitious (even after I had to make the aforementioned die holder), so we set about screw cutting a set of studs and using the die as a chaser – a nice simple job…

The “scrap-bin” produced an old and blunt counter-boring tool – but the Quorn fixed that and produced a nice job.

The pilot holes for the caps had been drilled in France, so I hoped this was accurate and followed them, and wound up with an almost perfect fit.

the pile of parts is growing

Finished the day by jig-boring the cylinder base mounting jig (angle plate with dummy piston rods clamped to the slideways.. and took a first skim over the top of the HP cylinder – although for some reason the facemill started chattering….

A nice weekend’s work….