I'm into model railroading and I've been trying to make HO scale parts
using automated techniques. Unlike most folks, I'm not as concerned about
power as I am about the ability to machine details. For example, a 1"
dome representing a rivet in HO scale is 0.0115" in diameter and 0.0057"
high. Spacing in between these may go as close as a scale 1.5" centers or
only 0.0057" gap between domes. As you can see, this would mean I need
some very tiny end and ball mills.

So, anyone have any experience with this type of work? What process do
the commercial boys use when making their molds? Are they using exotic
techniques? Also, do any of these CAD post processors like DeskProto allow
for programming of cutter geometries, such as conical as opposed to simple
ball and end mill diameters?

Pat


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