Tips and tricks for shallow milling/ engraving ?

[magicniner]

http://www.gravograph.us/engraving-p...Nose_Cones.php

By mounting a spindle with this type of nose on a vertical sprung slide (to mimic the original use where hand pressure on a manual pantograph kept it at it's set depth) one can engrave on convex, concave, rippled and non-level surfaces.
The text on this 20mm radius curved Titanium sheet part is about 3mm high -



It's possible to engrave 3 or 4 lines of text on these 20mm radius parts without noticeable depth/width variation.

Geoffrey,
If you want 3D engraving you just set flat parts perfectly level, anything else you model the surface for and then set up your part in exactly the orientation in which it was modelled,
Regards,
Nick