Found this cool site to format my source code for posting on Blogger.
Anyway we had some issues come up with PET resin casts... they shrink slightly and have a tacky surface cure. This makes extracting them from the mold extremely easy but they fingerprint easy and they are just slightly smaller than the original. I was thankful it didn't turn out to be some oddity with the RTV Urethane molds! Those suckers are pricey!
So we are switching to polyepoxide (epoxy) resin - it is less brittle and correctly scaled for the small pours we do (2 ounces for the inner C rings each, 4 ounces for the blade). It also doesn't fingerprint and it is still clear as a bell!
The prices for these cast parts have been updated slightly with change in cost of materials.
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