Re: [CAD_CAM_EDM_DRO] mirror finish on aluminum?

> > I have a retrofited RF 30 and I'm trying to get a mirror finish on a
> > 4"x4" piece of 6061T Aluminum. I'm using a 3" fly cutter with various
> > tooling but I just cant to get a mirror finish. Is it posible? Or is
> > there another step after milling to get a mirror finish. I know the
> > head needs to be trammed but figured that would'nt effect this.

I've never tried to do this myself, but I would think that if the head
is even slightly out of tram - ie, is not perpendicular to the table,
then the fly cutter will cut semicircular gouges into the work. A lot
of fly-cut stuff looks that way...

Even if you feed slowly enough that the fly cutter makes a smooth
pass, it would be concave rather than flat, and there would be a ridge
if you needed multiple passes to cover the work.

Chris

--
Christopher C. Stratton, stratton@...
Instrument Maker, Horn Player & Engineer
22 Adrian Street, Somerville, MA 02143
http://www.mdc.net/~stratton
NEW PHONE NUMBER: (617) 628-1062 home, 253-2606 MIT