Hallo Kai.
Die Geschichte von der Kugelmühle stammt aus der amerikanischen ATM Mail-list. Im Texereau steht meines Wissens nach auch nichts über kugelgemahlenes Polierrot.
Hier ein paar Zitate aus der Ami-Szene, gefunden mit " ball milled rouge " als Suchbegriff.
I've been using ball milled red rouge to finish optics with for the past few years. It came about after attending a talk at the Bellingham TM conference and a talk by an optician from the Mirror Lab in Tucson. He indicated that all their optics were finished with BMR.
I keep intending to make ups some samples for and AFM scan (atomic force microscope) but haven't yet. Surfaces look brighter and smoother but that's not scientific. The optics perform well, but again...
BMR is wonderful stuff, smooth, well behaved. Washes off your hands and hard surfaces but will stain clothes. I "mill" it in a rock tumbler with a hand full of .5" ball bearing (let it run about a week). It does generate some pressure (out gas?) so be aware... Anyway, nothing like the stuff that comes out of the bag from the supplier... Highly recommended.
Greg
Anderes Zitat:
Recently, I had the opportunity to use some rouge that has been milled in a
rock tumbler for several months. The milling was done by steel ball
bearings with the rouge in a rather thick slurry. Dean Ketelsen has
written about this ball milling in the past. In fact, it was his rouge.
A couple of things may interest list members. First, this rouge is much
cleaner to use than unmilled rouge. It's almost as unproblematic as CeO in
terms of staining. Second, it seems to produce no sleeks at all. I've
figured pyrex and BK-7 with it and haven't found any more sleeks than CeO
will produce, which is basically zero. Third, it produces the beautiful
smoothness that one expects from rouge, which polishes finer than CeO. The
only drawback to it is that for me, at least, the rouge doesn't seem
produce the same results from some figuring strokes as CeO. TOT 1/3 dia.
stroke with rather vigorous action produces a near paraboloid with this
stuff on an 8" f/8, as opposed to the oblate spheroid that I would have
expected from CeO. Still, overall I really like this rouge better than CeO
for figuring.
Interestingly, I was shown electon micrographs of various polishing
compounds and the ball milled rouge had the smallest, most uniform particle
size. Slightly milled rouge had some huge boulders of particles in it and
milled Barnesite had large plate-like particles. Wasn't able to see an
pictures of CeO.
Anyone with a rock tumbler can make this stuff, which I think is very
worthwhile.
Roger Ceragioli
Viele Grüße,
Guntram
