i was going to take a video so you could share my discovery, but the wife went out and left the kid. was hard enough to run the lathe with youngin in arm.
i ran a 10 tpi and a 1.0mm. just scribed the surface not the full thread. but the tips of the thread gauge fit right in......... sigghhhhhh...
What? You can never start showing them how to do this too soon...you'll find they love working the controls...