Hi Rich:
Cool photo.

In a button tool the angle means nothing. All tools are assumed to be poitning in until such time as I allow facing.
The angle input is simply the rotation for other bit shapes, but buttons are alwasy set to 0 degrees internally, there
is no effect from rotating the button insert.
Nice to see the undercut work, but Its a fluke of the algorithm I wrote. That'd be a tough cut ot be sure of as youd have to make sure that holder was weirdly enough shaped to allow for that cut.
The actual result you got is due to the fact I use only the actual tool insert for collision detection, though I did intend to upgrade that some day to take the holder into account. ( which is why the hodler size is specified, but unused at this point.
Looks like its loading better all the time though, and with the right holder I suppose you could cut that particular cut. LOL
Art