- i have just rotary tumbled some flat copper disks in steel shot.
as judy hoch described, the edges of the flat disk rolled up a bit.
can i remove the rolled edge if i burnish in a ceramic medium instead
of steel shot? do i remember that the ceramic medium will not work
harden the pieces? i wanted the steel shot to work harden the
pieces. if i ran the pieces first in steel shot and then in a
ceramic or an abrasive medium, would that trim off the little ridge?
(when i burnished off the raised metal, it seemed to scrape off
instead of being pushed down.)
in her book, judy says that dulling the sharp edges before tumbling
with shot will avoid the rolled up edges. does the edge need to be
beveled, or will just a slight rounding do it? i’m imaging using the
burnisher again. unfortunately, when i burnished my pieces after
tumbling my burnisher slipped a couple of times, so i had to go back
an clean that up. i’d like to avoid the burnishing if i can.
- i have used separate shot and solution for the copper. i think
i remember that i shouldn’t combine metals, but i can’t find where i
read that. is it ok to combine silver and copper in a steel shot