I am back in production for carbide sanding mandrels for most threads.
Currently can do the following threads right now.
5/16-18, 5/16-14, 3/8-10, 3/8-11, 3/8-11.5, 7/16-11
If you have a thread that is odd send me a pin and an insert and or tap and I should be able to make them.
The price is...