By Interloper393 - 5/4/2017 2:18:42 AM
Anyone know why this happens? My parts are cured and.when I wet sand the resin goes white, reason I wet sand is the 120 grit tends to leave marks.that can be seen after another coat of resin.
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By Warren (Staff) - 5/4/2017 9:22:49 AM
If the resin is going white when wet sanding then that is due to the resin not being fully cured before sanding. Uncured epoxies are hydroscopic until cured so what tends to happen is the moisture makes the resin surface cloudy as it is absorbed.
I would leave your parts longer to cure to be on the safe side. If that doesn't solve it, have a look at your mixing ratio and batch size to ensure you are within 1% accuracy to ensure things fully cure.
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