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Setting from behind


#1

Okay, I do not understand this. I just read an explanation by Jinks
McGrath in ‘The Rings Book’ about setting a stone from behind and it
remains unclear to me. Could someone please explain this to me?
Suppose I want to set a 5 mm round stone from behind, what do I do?
I’m not impressed with this book at all. Best, Will


#2
 Could someone please explain this to me? Suppose I want to set a 5
mm round stone from behind, what do I do? 

This method is used to simulate flush sertting where there are no
bezels or prongs visible on the front of the design. First, the
setting should be designed for backsetting… this can be done in a
number of ways. One way is to have the stone lay perfectly in place
from the back side of the design then you may have anywhere from 1
to 4 prongs used to hold the stone in place… 1 prong can be used
if there is a lip to slide the stone into . 3 to 4 prongs are used if
there is no lip . Basically, you simply push the prongs over to hold
the stone in place.This may require more room than a simple bezel .
If you have almost no room within the bezel, you can drop the stone
in, then use an engraving tool /beading tool to hold the stone in.
These type of settings in my opinion can loosen up easier than a
normal bezel setting. If the customer should push down on the stone
from the front side,the stone may come loose unless the retaining
prongs are extra thick.

Hope this explains it.
Daniel Grandi
Racecarjewelry Co. Inc.
Tel: 401-461-7803


#3

Hello William If its setting stones, I’m trying to help as many folks
as I can…these are my own techniques mind you. I would hesitate in
using a 156C bur, thats because you cannot see just where the bur is
cutting. I would use a small round bur and start drilling a seat just
above the claw as it is nearing the base of the frame L–< . I would
also suggest you use a #006 or a #007 round bur and groove around the
base of the frame this way no hidden metal is to prevent the stone
from sitting correctly. Watch out and observe just where the girdle
of the stone is seating. Is your bearing cut meeting the girdle???
will the stone sit flat ??? turn over the item and with your finger,
hold the stone and observe how the stone is looking to your eyes. Is
there a space around the stone? if there is, recut the bezel frame.
If all of these questions are in the positive, then use a brass
pusher and if its a 4 claw-inverted, press over 9 o’clock and then 3
o’clock, then check for security and do 12 and then 6
o’clock…keeping mind that the stone must be…at…all…times…flat!

DO NOT USE A STEEL PUSHER, or facets might break, I would ask you to
use a copper or a brass pusher in times like these. Push from the tip
of the claw and secure gently, watching out for the inverted
culet…hope this helps you, enjoy,enjoy!..:>)

“Gerry, the Cyber-Setter !”
www.gemzdiamondsetting.com"
North America, toll free:1-877-850-0003
Member of: MJSA, CJA, JDN
Contributing writer to the “BENCH” trade magazine.
Gem Setting teacher for George Brown College
"Casa Loma Campus”. Toronto,Canada