An excellent matte finish on any metal can be achieved with a handpiece and
burrs. Scribble over the surface to be matted with a very tiny ball-burr,
Use a bigger ball-burr and
scribble very short little curves about 2mmlong at most, at
random, and in all directions, pressing the burr a little more
firmly. And so on.
... and hart burs, and the tip of a broken bur bent at 90 deg to
the shaft, and variously shaped points in a hammer handpiece,
and 80 grit sandpaper (worked by hand), and using rockered line
technique (tremolo engraving) with flat and dotter gravers
crosswise, and Florentine finish with lining gravers, and
etching, and soldering filings to the surface...
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