I have been making pearl holes larger with micro carbide taper tip
drill bits. 1/8th shank. I have looked in Rio for a large
assortment (to take the hole of the pearl and increase it to fit a
24gague wire or so. Rio has a sets but its not a large assortment. I
was hoping for 1/8th since most of my stuff is 1/8. I have a collet
for 3/32 though. Quick change handpiece is a soon future investment.
I am wondering if anyone else uses any other drill bit that makes
this job easier/faster? If so where can I get them? I have been
enlarging the hole of strung pearls. I would also use them to half
drill some south seas pearls.
Also on that note, when I bought south sea pearls (all drop shaped)
the dealer told me that they would grind down the tip on a diamond
lap and then drill the hole. I wouldnt let them do it. Is this how
they would normally treat such a pearl if they wanted to set it in a
ring? I thought this would be bad practice since the pearl would then
be exposed, granted covered wtih glue.
Thanks for any responses.