Also,, could we get into a 'one on one' on vacuum casting...... BIG SNIP
Why do it privately? Isn't this list for just such discussions? I would
As to the perf flasks, we use them but also solid flasks on our vacuum
caster (Kerr). When using solid flasks, we insert soda straws along the
edges of the flasks to get a shorter vacuum distance from the center of the
flask. Also, we leave at least 1/8 inch of "headspace" at the top/bottom
of the flask to make sure the entire surface of the investment is NOT
intimately contacting the silicon rubber sealing gasket.
Our perf flasks "came with" (for a price) some heavy rubber sleeves that
are slipped over the perf part of the flasks to contain the investment.
Once set up, the sleeve is removed for burnout. Some people wrap the perf
flask with tape to contain the investment, time consuming (to put it on and
take it off) and repeated expense.
We cast all work (jewelry) with the vacuum caster (Cynthia used a broken
arm caster ((large one)) for years until we got the vacuum unit. She
misses the physical commotion of the broken arm but we have been happy with
the results and added safety of the vacuum unit.
R&R ultra vest is great. We use it too.
I am glad to have found this list..... thanks for all those who are
involved in it!
John Dach and Cynthia Thomas
a div. of We are given eyes to see and ears to hear,
MidLife Crisis Enterprises but what is required of the mind?
PO BX 44
Philo, CA 95466