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.
1. If you have any skill with gravers, you can brighten up the areas
by engraving the details back to a smooth, shiny surface.
2. 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
