Another shop improvement in the works! Dan wants a new vacuum casting
set up. I do too. When we were talking it over today he showed me a
beauty in one of the catalogs. It is capable of taking perforated
flasks. We do no production to speak of. Any trees we have done we do
with the Torit. The machine looked great $1500. + plus shipping. Then
I notice this very familiar squarish cast aluminum end on the vacuum
motor. Ah Ha I says! It is a Dayton refrigeration service pump!
Nothing against the motor really. I have one myself I have been using
for around 12 plus years. I learned to change the oil often. I also
learned that this pump, for our purposes, should have two filters.
One for trapping the investment particles, and one for removing
water. I added filters to mine. It was a major effort (around $100).
in pipe fitting. Probably because I am no pipe fitter! I have a
double filter system with a valve for each filter depending on
whether I am investing or casting. Dan feels I am blowing smoke,
passing wind, and to anal on this issue! I think that is the order he
stated? We are just having fun! He is a fine jeweler I assure you! He
feels one sprue is plenty most often, and is done investing inside of
4 minutes! We agree to disagree on some things, needless to say!
If we are going to improve our casting system, is it advisable to
have filters with a quality vacuum system or not? The Busch pumps
were mentioned when I went through all the aforementioned effort,
several years ago. The rotary vane type I recall, was mentioned. The
cost for the motor was over a thousand back then. I fixed what I have
instead. The boss will buy us what we want within reason. We cast
fifteen to 20 customs a month; pretty shy volume for a spendy system.
The perforated flasks are to be considered only if they make them for
the smaller flasks I would think. Does someone offer one for say, a
2x3 inch flask? Putting a single custom in a 5x7 flask would be a
waste. Who makes a system we should look at? Am I all wet with hoping
for a filtered system? How about vacuum chambers? Anyone use a system
with that feature? Hoping John Henkel and a few others will advise.
Space is an issue. We have about 30 inches of counter space, and
would likely purchase off the shelf. What is out there? Thanks in