I have a mounting that is CAD/CAM. I am trying to remove the
ridges from the casting in the areas for tiny melee setting areas,
but I can't figure out what to use.
A couple of options come to mind, since I’ve dealt with this problem
myself. First off, it’s a lot easier to clean up a wax model than it
is a metal casting. Too late for that. So, the next thing is this.
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If you have any skill with gravers, you can brighten up the areas
by engraving the details back to a smooth, shiny surface.
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Use “Robinson brushes” and bobbing compound. These are rotary
brushes you use in a flex shaft hand piece. They can be bough in
three grades, hard, medium, and soft. I prefer medium. They act as
tiny buffing wheels, except that the bristles can get down in
recesses and roll over the high areas taking off a minimum of
material where you want to keep it. Bobbing compound is about as
course as Tripoli, but it’s a little stickier so it hangs on the
brushes longer. You have to keep re-loading the brushes as the
compound only stays on for a very short time.
David L. Huffman