Talk Composites - The Forum for Advanced Composites

Epoxy coating resin application methods.

http://www.talkcomposites.com/Topic14864.aspx

By Mudchute - 1/31/2015 2:22:26 PM

hi all,

I have a turntable project which I intend to coat with the epoxy coating resin. 

It's made of stacked ply but the primed then painted with a synthetic acrylic rattle can. I'll leave the paint to cure for a week before attempting this.

My question is how do I apply the coating resin e.g. Brush? Roller etc?

Do I need to key the paint surface?

And how do I go about coating the sides without the resin running off?



Thank you in advance, Gavin 
By Warren (Staff) - 2/2/2015 2:25:39 PM

Brush onto a lightly keyed surface is fine. You will in most cases be fine with applying direct to paint in terms of adhesion.  I would spray up a piece of scrap wood and test the resin on it to make sure the epoxy doesn't damage the paint.  Most epoxies are fine with paint as they have a very low amount of solvents in and usually its solvents that react with paints.  Apply it thinly to the sides and build it up in layers.  It is likely you will still get some run off, but once fully cured you can sand and polish to remove any blemishes and get a good even finish.