Thread directions with pictures
canadianhobbymetalworkers.com
Just a caveat if you have screw on chuck, reverse spindle direction will act in a loosening direction (providing load is high enough).

Please school me on internal threading, tool holders, inserts, HSS etc.
I'm looking for someone to educate me on the finer points of internal threading. As a baseline, I've never internally thread anything. I recently ordered some tool holders/carbide-inserts from Aliexpress, and the learning curve on the insert/holder naming conventions was pretty steep. When I...

Just a caveat if you have screw on chuck, reverse spindle direction will act in a loosening direction (providing load is high enough).