Anyone use this epoxy? I called mitches north to see if they carried rr and the guy there said they sell this stuff in 1.5 gallon set up…couldn’t find anything online about it.
I just used this stuff to repair a snapped EPS board. I used the rest of RR epoxy to tack the pieces back together first. I then laminated with Composite Resource epoxy.
I had a huge outgassing problem under the fiberglass. Either a; I should have sanded more and used a bit of filler to get a smoother surface under the glass or b; I sanded to much exposing the older EPS foam which reacted with the heat of the Composite Resource epoxy.
So another question I have for someone who uses this stuff:
When I use Composite Resource epoxy to laminate a new EPS blank should i seal the deck first?
I’ve used this resin on a couple boards. I had a lot of trouble with pinholes in both the lam and hotcoats even though I religiously use resin/microbaloons to seal the blank and I use good foam. It also seems to yellow faster than the RR epoxies. I never really had any problems with the RR epoxies.
OTOH, I’ve heard tell that some people like it best for fill and hotcoats. Different strokes, I guess.
One thing I like about RR is that they offer several different mixes. I’m kind of leaning toward using different resins on different parts of the board, particularly as I get into the veneers.
Excellent info gdaddy,
I just bought 1.5 gallons of this stuff, what do you recommend I do when I laminate a whole EPS board with it? What are resin microballoons, something like cabisol?
The glass microballoons act like cabosil or Q-Cell, except I think they’re lighter.
I was referring to a slurry of epoxy resin + glass microballoons as a lightweight and sandable filler. It’s used to seal the EPS prior to lamination so it doesn’t drink as much resin. Most people use a water-based spackle because it’s a bit lighter and it dries a lot faster, but I was never too fond of the idea of using anything with water in it in next to an epoxy lamination; evaporation or no evaporation.
Then again I’m a garage hack and time is not a factor for me, so I’m free to indulge in my paranoia.
Anyways, my point about mentioning the seal in my comments was to remove the foam itself as a factor for my pinhole problem. As for how to avoid that problem I’ll leave it to people with more epoxy savvy to answer that because I don’t know.