What resin do you use for casting?
What resin do you use for casting?
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Custom WorkstationI've been playing around now for 4 months. My end goal is to do some small scale repro (collector, not for playing) figs so I want to be able to mold and cast. I've been using SmoothCast's Oomoo30 for making silicone molds. For resin, I bought the SmoothCast 65D, which I'm pleased with the finished cure on as far as hardness. However, it has such a short potlife and I'm discovering that it is not wanting to flow into some of the smaller details. (For example, it won't even pick up antenna on a Greedo head). Since I had some sitting around, I tried some Envirotex resin and was surprised that it did pull out those voids just fine. However, that has too long a cure and isn't the right type of resin moving forward.
I'm also doing all this as a basic pour, no fancy vacuum or pressure stuff for me. I've tried to create the molds properly with venting shafts anytime a detail is on more of an angle, but in the Greedo example, the antenna are directly vertical from the pouring shaft. In my zabrak horns I just tried, it either trapped air bubbles at the top of each tip or just didn't flow down into it, not sure which.
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Posted by
CustomKAT on Tuesday, February 21, 2017
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Anyway, wanted to let you know something that maybe is common knowledge but I know I misunderstood. That "6-ish month" shelf life of Oomoo-30 - that's from DATE OF MANUFACTURE and NOT date of cracking open the seal/bottle! So depending on your source, you might get a bottle that's already at it's month 3 when you open it. At least that helpx explain why it seemed to go thick quicker than I expected.
http://www.alumilite.com/store/p/946-Flex-60.aspx
Question on the Oomoo-30: I wrote the dates I opened everything on the lids so I could track. I opened them Thanksgiving weekend (end of Nov). I know they say to use up within 6 months but it's barely even 4 months. I have been obsessive about sealing up the bottles as soon as I divvy out my amount needed. However, a few weeks ago I've noticed my part B (the pink bit) is becoming so thick that it's almost rubbery now. My mixed silicone no longer even pours as a stream and I have to sort of palette knife spread it. Has anyone else had this experience?