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Old 01-22-2020, 04:51 PM
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Centralrchobbies
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Default In mold primer

Looking to spray a primer or light layer of gelcoat in the mold before layup. What are some good epoxy based primers?

Last edited by Centralrchobbies; 01-22-2020 at 07:05 PM.
Old 01-22-2020, 06:07 PM
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speedracerntrixie
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I use Klass Kote white epoxy primer with fast cure hardener.


Old 01-22-2020, 06:14 PM
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Thanks. Can I ask what kind of layup schedule do you use for that type of fuselage.
Old 01-22-2020, 06:38 PM
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Sure thing, first the mold is prepped with Partall#2 wax and then PVA applied with a foam brush. The primer is mixed with 20 grams each of primer, hardener and reducer. I let the primer cure for an hour and lay in one layer of 1.4oz plain weave cloth at 90 degrees then another at zero. Then I put down a core of 1/32" contest balsa followed by a layer of 120 style 3oz cloth. A layer of peel ply is applied then followed by a barrier film of 1mil plastic, 3 layers of paper towel as breather cloth and finally placed in a vacuum bag of Stretchlon and 15 inches of vacuum pulled for 36 hours.
Old 01-22-2020, 06:57 PM
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Originally Posted by speedracerntrixie View Post
I use Klass Kote white epoxy primer with fast cure hardener.

thanks I appreciate it. Where is a good source to order the klass kote from?
Old 01-22-2020, 07:15 PM
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I order it direct.

https://www.klasskote.com/epoxy-colors-primers

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