Dan
Update:
Just thought I'd say why I wanted an Undo button. I mistakenly erased the wrong train a few times


Hmmm. A compact alternate form of this tool (non-rotating) could also be used on a boring bar to turn nuts for the potential extended helical gear angle (80 max at this point) and width. These would then be termed screws/nuts instead of gears.John S wrote:
John S.