I cut every day for a living, 12-16 hours a day. For me, time is
money, and I keep my customers because my work is very, very
accurate. I can’t afford lost time, sloppy meets, tilted or uneven
girdles, etc. Been at it for 37 years, one does learn a few things
along the way.
Keeping in m ind that I have a few stones dopped up at any given
time, here is my general proceduRe:
After cutting a flat or temporary table, I attach my dop with
LocTite Professional Grade Super Glue. There is no question that
this product creates a superior bond, providing your surface are
scrupulously clean. Some folks will tell you that roughened surface
provides a better bond. That may be true with carpenter’s glue, but
is absolutely not correct if you are working with a cyanoacrylate. A
polished or nearly polished surface creates the best bond. if you
don’t believe me, call Loctite, they will confirm it. I put a 3000
grit falt on my stone and 3000 grit surface on my dop end.
The use of an accelerant is okay, but WILL decrease bond strength by
about 25%, so just be aware.
After cutting the pavilion (I almost always cut the pavilion first),
I use Lcotite’s new Professional Grade 2 part 5 minute epoxy. It is
MUCH stronger than the “older” 2 part epoxies, bt I understand
Devcon now has a competitive product on the market.
Rest assured, the Loctite, all I have experience with, is very, very
strong. Anyway, after carefully and fully mixing equal amounts of
the two parts, I place some in the receiving dop, gently bring the
pavilion into the dop (don’t press), wipe off ALL excess glue, and
place the transfer fixture into my kitchen oven, cold. I turn the
heat up to 235 degrees F, and set the timer for 30 minutes. When the
timer goes off, open the oven door, wait five minutes and remove the
transfer block and let everything cool down until it’s cool enough
After removing the stone with two dops still attached, rap the first
dop sharply and the cyano will release easily. Sometimes that end
just falls off. Then, back to work.
Keep in mind that while it’s in the oven, I’m working on another
stone, so the time is productive. Starting from untouched rough, I
have my first dop in place in less than two minutes, and I’m
cutting. Mixing the epoxy and putting the second dop on, placing it
in oven takes maybe two minutes. No burned fingers, no open flames,
no wax mess, no shifting of stones while polishing big corundum
Try it, you’ll ditch wax fast.
I have to say I can’t imagine using a double sided piece of tape.
The thickness of resilient tape would create much more slop than I
could ever tolerate in good work. Just my opinion.