I’m using these bits.. I ordered two each of the 60deg, 70deg and 90deg. I received four of the 70deg instead of the 60deg bits but I discovered it too late to exchange them. No worries though. I’m still enjoying them.
Feeds and speeds from the Vectric tool list for them:
Pass depth: 1.0mm
Final pass step over: 0.2mm
Clearance pass step over: 1.0mm
Spindle speed: 12k rpm
Feed rate: 20.0 ipm
Plunge rate: 15 ipm
Here’s a few more pics of tiles I’ve been practicing on.