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Before you start actually using this kiln with the microwave please be sure
to use the included safety glasses charge the
crucible with one part potassium nitrate five parts
borax and whatever gold or precious metals that you are melting
it all goes straight into the microwave be sure to have the separator pads
to keep the kiln off the bottom surface of the microwave
start out with about ten to fifteen minutes
you especially need to check frequently after ten minutes
that's when the temperature will really start to heat up
that's uh... at ten minutes it's not too bad, but after that
is when it really starts heating up you need to check that your microwave is not
getting too hot with your bare hand every once in a while
make sure none of the borax has overflowed out of the crucible
the glass borax absorbs heat and it deteriorates the insulation as you see here there is some
damage from some glass that got out and
on the insulation you need stop and take that out if that ever
happens you can stir
your gold glass solution with the graphite stirring rod to try to help it congeal into
one bead of gold uh... another way is
is to leave this thing in there for good
five minutes after everything is melted to get the gold to form into one giant bead
pull it out and quickly
pour into a suitable container and uh... it is just a matter of allowing
everything to cool and then chip away the glass to reveal the
gold in this case my gold kinda stuck to this uh...
broken crucible i poured it into so i'm gonna have to uh...
chisel the gold off the crucible as well once i get the gold out i'll be tapping it
litely with a hammer actually i might recommend a wooden mallot
to uh... bump off any remaining bits of borax glass on the gold
it's time to take in and weigh it for this batch
it ended up to a very attractive four point eight
grams of pure gold
recovered from electronic scrap