15-05-2020, 02:29 PM
Colin, don't get too precious about work holding, remove the lathe topside, make up some support in wood which will clamp to your lathe saddle - even tap a couple of holes into the saddle where they won't matter too much (its your lathe and YOU can do what you like to it). Once the nose piece is supported, you can line bore / spot face the old lugs away, clean up for the front bearing etc. Just take fine cuts and you will be OK. The photo shows a Bugatti clutch housing that I machined on my Boxford lathe - all mounted onto a sheet of ply. That casting cost over £800, so I had to take it carefully !! It shows using an extended drill through the shaft bosses before I line bored right through.
ClutchHousing.jpg (Size: 78.33 KB / Downloads: 385)
ClutchHousing.jpg (Size: 78.33 KB / Downloads: 385)