English - 14 -
Pyramids with the prefix “P” are especially suitable for the
treatment of corners and edges etc.
Normally it is best to mix these two shapes in a ratio of1:1.
7.2.3. Blue plastic chips of the quality “O”
These plastic chips are strongly abrasive and are mainly used
for pre-grinding of raw, not yet treated castings.
After grinding with these plastic chips you have to fine-grind
with the plastic chips KX 10 (white) or PX 10.
Look out! These blue plastic chips can damage cubic zirconia
or soft precious stones like rubies.
They can only be ground with KX 10 (you also could use PX 10
when the processing time is shorter than 3 hours)
Otec recommends blue pyramids PX 10 for the pre-grinding of
raw, not yet treated castings and generally for the grinding of
fairly cleaned platinum, stainless-steel or titanian jewelry ma-
chined on a turning lathe.
7.2.4. White plastic chips of the quality “X”
These plastic chips are used for very fine grinding and achieve
a surface finish which is fine enough for being polished by a dry
polishing machine (
Eco-mini „dry“
). For the processing of
jewelry with cubic zirconia especially, the cone-shaped chips
KX 10 are adequate.
