Engine Turning by CAD/CAM methods

In a message dated 10/25/2005 10:27:27 AM Mountain Daylight Time,
mihalov_horology@... writes:

Has anyone in this forum tried using CNC equipment to produce engine-
turned style engraving?
I am referring to the geometric ("sprial-graph") type engraving
produced on watch/clock dials using antique rose-engine lathes and
straight-line engines.


Technically this is Off Topic, but maybe someone will do it to there New CNC
case...grin

I think it could be handled as a hole drilling program, but use the tool
instead of a drill.

"Drill" on centers only from one direction, left to right... "drill" to a
very small depth, to adjust the tool contact, maybe add a short pause at the
bottom of the "hole".
Return to the left side, move the other axis, to the next row position, and
repeat until the surface is covered.
I have seen this work using a ink eraser as the tool. The gray long with
ones come to mind, in an adjustable holder
If my thoughts are wrong on this please post another method.
bill


[Non-text portions of this message have been removed]