Mill Turn Cross Holes

[Mick]

I've uploaded a file MILL-TURN-SOLIDS.MC9 to the MC9 on the FTP site. I can't, for the life of me, get Mastercam to spot the holes on the underside flat on the shaft. I've tried several methods to set the toolplane for the underside, and it always drills the "underside" of the hole.

As can be seen, it spots the top flat fine, but when I try to spot the underside flat, it doesn't work.

I know the answer is probably staring me right in the face, but as it's late, and I've consumed a couple of late night intakes of my favourite tipple, I thought some extra input might help

 

[Fred from Université de Sherbrooke]

As a fast answer, I would said: Toolpath transform rotate 180 deg. Other than that, check your clearance plane (incremental), check the plane you're using for this operation so that Z is on the good side. Hope it help.