Would it be possible for you to get some inserts and holder for single pointing larger diameter threads?
I was experimenting with single pointing last night and teaching Procterc.
I need to turn 1/2-20. Looks like the holder/insert on hand is for smaller diameter threads.
Dressing a hss tool is a !###!!! on our bench grinder in the metal shop…there is no light by which to see!
If you get this, then I am open to teaching a class this coming weekend.