I needed to grind a small but critical shoulder on a 4mm tap and also cut some tiny metal 'O' rings. This simple clamp adapted a Proxxon 50/E micromot handheld tool into a toolpost grinder for a 10" lathe.
This should work for any similar tool with a 34mm diameter body
Pictures show grinder in use as a cutter, grinding a 4mm tap and 3mm copper and aluminium 'O' rings cut from stock tube
I printed the clamp in PLA with 4 shells and a 30% infill.