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UV-resistant Doming Resin

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UV-resistant Doming Resin

Postby lamont » Sat Dec 05, 2015 3:46 pm

I am looking for an easy to use doming resin that is UV-resistant (non-yellowing).

I have tried casting resins for this purpose:

Smooth-On 202: a clear urethane that is extremely sensitive to humidity. The product is often not fresh and tends to bubble while curing: More often miss than hit.

Alumiilte Water Clear: a urethane that was great until the formula was changed about 1-2 years ago. With a now much longer working and curing time, humidity causes bubble issues similar to 202.

I have not yet tried UV-curing doming resins.

Any suggestions and recommendations?
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Re: UV-resistant Doming Resin

Postby mangozac » Mon Dec 07, 2015 2:20 pm

Have you tried vacuuming the resin before pouring?
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Re: UV-resistant Doming Resin

Postby lamont » Mon Dec 07, 2015 8:26 pm

No, I can't possibly vacuum the resin where I am due to noise issues. I know that when 202 is fresh I don't have a problem with bubbles. 99% bubbles that I get with either 202 or Water Clear are not in the resin right after applying the coating. The few bubbles that a are there I pop with a torch and they are gone. It's only during the curing process that the material begins to bubble in spots.

The Alumilite Water Clear was ideal when it had only a few minutes pot life and cured within a few hours. With the new longer working time and much longer curing time, it's become unusable. It also need posturing in the oven to a achieve acceptable hardness.
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Re: UV-resistant Doming Resin

Postby mangozac » Tue Dec 08, 2015 7:22 am

Actually a vacuum pump is relatively quiet - not like a floor vacuum machine ;)
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