Barranca Diamond CAB COMBO WORKSHOP - Manual (Page 21)

21
POLISHING WITH DIAMOND PASTE (continued)
Lightly smear with your fingertip a small amount diamond paste on the center of the mounted Polytex
pad with the unit operating and the polishing disc rotating. The diamond paste will evenly spread over
the surface of the Polytex pad once polishing of the gemstone starts. Move the gemstone in a rocking
and rotating motion from the center of the disc toward the outside edge.
Use only one dedicated Polytex polishing pad with each respective diamond paste syringe (i.e. keep
a labeled Polytex pad for the 8,000 grit paste in a zip-lock bag labeled 8,000 grit). Do not use a single
Polytex pad with two or more diamond pastes or else cross-contamination and poor polishing of the
gemstone material may result.
The Polytex pad can be removed from the foam rubber covering of the convex polishing disc by
slowly pulling the Polytex pad off the foam and placing it in a zip-lock plastic bag properly labeled with
the syringe paste diamond grit size for future use. No water or extender fluid is needed to effectively
disperse the diamond paste from the syringe on the Polytex pads. If the adhesive backing becomes
weak with repeated use, you can apply a few drops of 3M On/Off cement to improve the adhesive
connection to the foam disc.
POLISHING WITH THE LEATHER BUFF PAD
For final polished gemstone results, place the 6" cowhide leather pad (rough side out) on the foam
polishing end disc using the 3M On/Off adhesive cement (red box) to hold the leather pad securely
while buffing the gemstone in a rocking motion (fig 38 & 39). Only use a small amount (8 to 10 dabs)
of 3M On/Off adhesive cement on the smooth cowhide surface, smearing it uniformly before placing
it over the foam rubber on the polishing disc. When the final polish finish of your gemstone has been
achieved, remove the leather disc and place it in a zip-lock bag for future use. It is not necessary to
use any polishing media or liquid (water) when buffing the gemstone with the leather disc. Be sure
to firmly grip the gemstone by hand or with a dop-stick (wood dowel or aluminum rod) cemented or
epoxied to the back of the gemstone while using the leather buff pad.
Fig 38 Fig 39
CAB COMBO WORKSHOP OPERATION AND ADJuSTMENT