Hi, Brent–It appears you have two things going on here. Before I go
into mold deterioration, I suggest you look into why you are getting
bubbles in your wax in the first place. You can call me on this, as
it cannot be answered without knowing a lot more about what you are
The product you are using, Dow Corning HS II is an extremely soft 16
to 20 Shor A durometer material. This may be working against you.
The mold surface should not break down, as all silicones will
withstand 500F continuous. The tear strength of the product is 125
ppli, which is substantial. The only thing that comes to mind is
that you may not have enough mold body backing the pattern. Again,
give me a call and perhaps I can sort this out with you.
Zero-D Products, Inc.
38285 North Lane. #103
Willoughby, OH 44094 USA
fax 440 942 2130