Suppose I’ve set a Height for a heightmap at 2.2 mm. This is a inverted subtractive element so I surmise pure black will mill 2.2 mm deep.
Now suppose there’s a particular spot in that map of which I’d like to determine the depth. If, in my vector drawing program (AD), I sample the prospective heightmap image (B&W) at that spot and get a Luminance value of 0.40, can I assume that spot will have a milled depth of 0.40 x 2.2 = 0.88 mm?
I have a situation where I have no ball bits small enough yet long enough to get into a tiny crevice so thought I’d pocket that area with a square bit. An alternative would be to just use the square bit, 3D style, on a subset outline of the heightmap but I’m not sure if this is sound procedure. The heightmap is relatively uniform over this small area, maybe that would work?