Post by rodak on Jun 28, 2020 13:58:53 GMT -5
I created a mold and cast several pieces using Alumilite White, and they look great. Then I cast some using RC-3 Black, and the surface has a horrible, mottled appearance, completely unusable. I've used this same Black resin before and sometimes get a good casting and sometimes they look like this, and I've never been able to figure out why.
One thing I've noticed is that the "B" part of the resin seems to develop a grainy sediment over time (we're talking just a couple of months or so, not years). At first I thought it was that sediment causing the problem, so I tried drawing it from the top without shaking it, but got the same results. Any suggestions?
In the attached photo, you can clearly see what's wrong with the black one. It's hard to tell with the white one, but it's perfectly smooth, exactly what I wanted.
One thing I've noticed is that the "B" part of the resin seems to develop a grainy sediment over time (we're talking just a couple of months or so, not years). At first I thought it was that sediment causing the problem, so I tried drawing it from the top without shaking it, but got the same results. Any suggestions?
In the attached photo, you can clearly see what's wrong with the black one. It's hard to tell with the white one, but it's perfectly smooth, exactly what I wanted.
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