Been having constant issues with tiny bubbles rising to the surface with the fill coat and gloss coat, sometimes breaking the surface other times not. It's happened on all my boards a little which wasn't really noticeable but the last one looked like the night sky... but red!
I can't figure out what it is! I'm in the UK, workshop gets cold and all my materials are left in there. I bring the resin and wax in styrene inside 12hrs before filling and glossing. The resin doesn't have a good viscosity otherwise and the wax and styrene need to mix in the warmer temp after seperatring in the cold. Saying that the bubbles have also happened a little in the summer. I only use 1-1.5% catalyst so it aint cooking or anything silly like that. I don't wipe down the lamination with solvents, just an airline and wipe with dry cloth. Im using Seabase's ISO 10 and their wax in styrene 2%. I mix the resin slowly by hand for a minute of two, brush length ways, diagonals and lengthways again. Can't believe it mechanical as the resin has an age to dry for the bubble to come out
Any ideas please?
Picture of extreme case.
