I was told, and subsequent practical experience suggests it’s true,
that bronze makes a better substrate into which to embed diamond grit
than copper does. This of course for stone cutting purposes.
Accordingly I went to my local scrapyard and as luck would have it a
discarded, cracked, bronze cymbal (Sabian) from a drum set lay in
among the red metal pile.
The metal was about 3/32" thick; I hammered it flat on the anvil
without problem. The guy at the scrap yard said, “Yes we tend to get
them in the spring. That’s when the rock-n-roll bands clean out their
Bay of Fundy geo-guiding; minerals, custom agates, faceting, silver &