Observe the following BEFORE proceeding:
1) Make sure the metal you'll be laying over the stone is thinned
out. Do this either by hand after the casting is done, or in the wax
& save yourself on material. For something as soft as opal, something
in the 22-23gauge thickness.
2) Use the new "clear" duck tape & lay it over the stone (after much
grinding & proper seating of the stone of course) for protection
against the accidental slips.
3) Cut a piece of brass rod approx. 31/2'' in length. 14 gauge will
do nicely. Taper your tip by filing (or using your flexshaft) to
about 45 degrees all around. Polish the tip of your rod. I
know..brass deforms easily, & you spend some time repeating the
process. But what would you rather do? Replace opals? Or set the
stone once & be done with it? This is your new, custom made hammer
handpiece. You can see this in action on Blaine Lewis' "New approach"
videos. Check out: http://www.newapproachschool.com
4) Turn OFF the phone. Put on some Pachabel or Vivaldi. Start