Everyone who casts will swear by the system they use. I am no
I vacuum cast using a very old vacuum casting table that has a plate
for vacuuming the investment and invested flasks and a table for
vacuuming the flask as the metal is poured.
I have a controller on my burn out oven. I melt my metal in a large
Kerr electro-melt with a built in controller. The smaller Kerr unit
will be sufficient if your castings are not over around 20 ounces.
My feeling is if you vacuum your investment and flasks you have the
beginning system to do vacuum casting. Most vacuum tables have both
a table to invest the investment and a table to vacuum the flask
The temperature of the entire system is controlled with the burn out
oven controller and the electro melt furnace controller.
By using the electro melt you make pouring the metal easier and will
know the relative temperature of the metal when you pour. Pouring
metal from the Kerr furnace is as easy as pouring coffee.
Unless you purchase a very large centrifugal arm you will be able to
pour much larger casting with vacuum.
I have shipped out some of my waxes to a centrifugal caster. I have
notices that my vacuum castings seem to be better and have less
problems than the centrifugal cast items.
With the anti firescale vacuum casting process you will be able to
cast without getting firescale. The process does not work as well
with centrifugal castings. See:
If you are into production casting one of the more expensive casting
systems probably would work better for you although they are much
I must admit I have never used any other casting process so my
thoughts are somewhat prejudiced.