Hi John, what does an excellent brightning/polishing job inside of
areas that are normally not accessible with steel/stainless beads and
points commonly used in vibratory /burnishing equipment Is a
"magnetic" Pin Polisher. We commonly use this machine on a daily basis
to brighten the insides of chain, complex cocktail rings, earrings,
rings and pendants.Due to this machine, we have not used any cyanides
or stripping solutions in over 2 years. We bought our machine over 2
years ago for $ 950.
Here is a brief description of the machine for those who may wish to
build one. The spinning base is a ceramic encased
magnet(powerful)attached to a variable speed motor. You then build a
platform that sits about 5mm above the spinning magnet .this base is
usually made of Alumunium. We then place a plastic, lidded bowl on
this platform (permanently borrowed from my wifes kitchen collection).
The pieces of jewelry go into this container along with about 1 kg of
miniature low quality stainless pins.The pins are .48mm dia. X 5 mm
long ,there are no burrs on these pins, so its not a questions of
clipping some wire and making them . ( these pins may have come from
a bearing manufacturer) I bought mine from The contenti Co.
http://www.contenti.com (best price i believe) and also available
from gesswein and rio grand. John, Do you remeber the magnetic stirrers
that were used in chemistry… I wonder if this would work instead?I
don’t know how the insides were built, but the concept seems
similar.You might have one or some one on orchid may have one in their
archives of machines and could possibly test the idea.
Daniel Grandi http://www.racecarjewelry.com We do
model/moldmaking,casting , high polish finishing in
gold,silver, bronze/brass and pewter for designers and jewelers.