It pay to read and follow instructions. Previous memo did not
quite do it as requested.
My notes are filed somewhere so well can’t find them. I will and
let you know the composition of bobbing compound.
Bobbing compound is a rapid cutting material when used with a
bristle brush. The brush is "extra-stiff horsehair bristle"
purchased from Indian Jewelers Supply Company, 3 1/2 inch
diameter, with three rows of bristles. The bobbing compound will
not stay on the brush too well so it needs to be replaced often
to be effective. I wash in laundry detergent and water to
which is added a few drops of house-hold ammonia. Old tooth
brushes do a great job. I then polish with zam and a cotton
wheel. If any Fire scale is still present this routine will
show it immediately. Then its back to the zam and a repeat of
the entire process. The piece sometimes get a rouge going
Problem I now have is that the piece is heavily textured and the
bobbing compound will remove the details. Tried a little nitric
acid and was not too pleased with the results.
Tried the remove Firescale with ferric chloride since it is used
as a copper etchant and can be readily purchased at any Radio
Shack. Twas a good idea but didn’t work. It did make the
silver a dirty dark brown so all was not a total waste of time
One of my texts say Firescale is acceptable as an indications of
being hand made. Another says firescale is acceptable if the
whole piece shows a uniform firescale. Now that is a great
My introduction bombed
I am Bill Eisenberg
San Diego County in Sunny California
I work mainly in silver. I delve in the Japanese alloys and make
my own. I do chasing and repousse’ in the Japanese style. I
studied with J. Gertner, A. Lugo and with friend and mentor J.
Harr. Have sold at street fairs and am currently in a local
gallery. Retired so I can play and experiment a bit.