I have used an electro melt for 30 years. Its use allows you to
maintain a consistent temperature between pours.
Without the pour assist on the vacuum table the electro melt makes
pouring easy. Just like pouring coffee.
There is a furnace on the market that I wold strongly recommend not
buying. It is much cheaper but is not as easy to use as the electro
melt. It requires you to remove the crucible with tongs from the
furnace unit. This is a very awkward method.
I now use the large electronically controlled unit. I fill the
crucible with as much silver as it will hold. I pour until the
remaining silver looks like it will not fill the next mold. I fill
it to the top again and start over.
This cycle will work with the smaller electro melt if the models do
not require large amounts of metal.
Do not pour the metal for at least 5 minutes after the unit
reached the temperature you have set. This will give the upper ring
of the crucible enough time to heat up and not to cool the metal as
it is poured. If you pour too soon the cooler ring will chill the
metal as it is poured.
Allow at least 5 minutes between pours again to allow the ring to
Weigh and record the amount of metal each flask will require
Record a number for each flask. Scratch the number on the non sprue
end of the invested flask. Record where they are placed in the burn
out oven. You will know which flask you are pouring and how much
metal it will require. Knowing how much your are pouring and how much
you had in the crucible will tell you how much metal is still in the
crucible available for the next pour.
If you do not buy the electronically controlled unit be sure to
monitor the temperature. The unit will burn itself up if not
controlled by you. When I used the not controlled unit I would set a
timer and clip it to my shirt to remind me to check on the electro
If you are pouring sterling silver be sure to check on my anti-fire
scale casting procedure. You will get castings without fire scale.
Contact me if you have any questions