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Newbie Question About Epoxy "Beading" in Mold
Newbie Question About Epoxy "Beading" in Mold
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Newbie Question About Epoxy "Beading" in Mold
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Tango
Tango
posted 9 Years Ago
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Hi guys, sorry for the Newbie Question, but this is really giving me some grief.
I made a mould with the Easy Composites mould kit, which came out really well, and I'm using wet lay to make parts from it. I've coated the mould with easylease, but when I put a coating of epoxy into it as a kind of gel coat the epoxy beads like water on a waxed car panel. I've tried using release wax and PVA release agent, but they all do the same thing. I did try a gel coat, which was slightly better as it was a bit thicker, but I had to keep brushing it until it had virtually cured to stop it leaving gaps. The part is going to be used near a motorbike engine, so I was using high temp epoxy, which has a longer cure time, so it's harder to keep brushing it to maintain the even coverage.
So, I'm at a loss to know what I'm doing wrong? The mould was thoroughly cleaned before applying the release agents. The part is cosmetic, so the finish is really important.
Any ideas please?
Cheers.
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Newbie Question About Epoxy "Beading" in Mold
Tango
-
9 Years Ago
Hi Tango. Sorry to hear about the drawing of resin you are going through. I had the same issue but...
mrlindeman
-
9 Years Ago
Hi - for this approach you can try using glass tissue or glass veil. This is like tissue paper and...
petereng
-
9 Years Ago
You can also add enough of a thixotropic powder like cabosil to make the resin thicker (honey like)...
Fasta
-
9 Years Ago
Many thanks for the advice guys. I've just received my next batch of materials, so the...
Tango
-
9 Years Ago
You can not change the ratio of hardener to resin without affecting the properties of the resulting...
Dravis
-
9 Years Ago
Thanks for the reply. I'll make sure I stick to the correct ratios for the epoxy harder then. I...
Tango
-
9 Years Ago
You could try not adding the clear coat to the mold and spraying it on the part later.
Zebra
-
9 Years Ago
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