Does anyone happen to know any tricks to soldering an amethyst and
silver ring for sizing?
i find the best way to deal with silver that is set with gemstones
is to go in fast and coat the stones.
1st you must clean the joint with the ultrasonic and steamer, dirt
will mess up the flow, then dip in to the boric acid, then i coat
the stones with a product called HEAT SHEILD. it looks like muddy
pancake batter. i usually use the back of my tweezer to force it
under the head and smear it on the stone. most people use to much,
you dont need all lot to protect the stone. MAKE SURE YOU DONT GET
ANY OF THIS ON THE JOINT, IF YOU DO START OVER
then i take two pairs of tweezers and put each one half way down the
shank on each side. these tweezers will acted like heat sinks and
absorb all lot of heat.
then i cut my solder, always use hard silver solder for sizing. it
requires more heat but it will flow better with silver and does not
pit so much.
the last thing i do is the real secret to soldering a sizing joint
properly with silver. silver requires all lot of heat to work right.
i use a big flame, about 3 to 4" flame with a very strong and loud
hissing sound. first pick up your solder with a softer flame (a
normal one otherwise you will burn you solder) then adjust it to the
stronger flame, add your flux, i use the green one, but i think most
use the white. then heat the joint up really fast with the loud
hissing flame, aim the flame up away from the stone (meaning heat the
inside of the ring) make sure the flame is not to bushy that will
spread the heat around the ring, then when the flux goes clear and
the joint is red hot add the solder to the top of the joint and it
will pull throught and flow really nicely to the inside.
i find this is a similar procedure to sizing platinum. except you
dont need the dark goggles.