By BMac - 7/23/2018 8:38:01 PM
Hi.
I've been working on carbon fibre skinning on some car parts. Everything had went well until I put two last coats on before I start the fine sanding and polishing on the resin.
But this time three are loads of crater like holes in the resin everywhere and quite a lit of air bubbles. The finish also has a white milky residue on the top layer.
Is this contamination or an issue with the resin?
I did re-use the last paintbrush that was cleaned in paint thinners. Could that be the issue or maybe some water residue on the part?
Thanks
Barry
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By Hanaldo - 7/25/2018 1:29:53 AM
Dont use paint thinners, use acetone for cleaning. Or just replace each use.
24 hours is sort of the very minimum cure time for an epoxy, and that's assuming the temperature didn't drop below 25C. Ideally dont expose it to water for 72 hours unless you've done an elevated temperature cure.
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