Hi Rook, it seems to me that with epoxy the longer time the resin takes to kick you can use less resin. You have more time to work so you can take you time to wet out laps with less resin dripping on the floor. Also the epoxy sort of soaks into the glass so you don't have to work it in so hard. Dunno if this equates to less use of resin tho'. I've mixed amounts in the ballpark of what Greg suggest and ended up with small amounts of resin on the floor and no dry spots. regards, Håvard
My name also is ERIC hence the confusion drew and Eric J http://www.surfboardglassing.com
I have a question about Billybob's response. Making repairs with epoxy. Are you repairing epoxy or poly boards? I have taken a few aircraft composite classes and they say not to mix resin basis. They all say it will fail early. Have you noticed any problems after a few months? I haven't tried epoxy on repairs because it takes to long to kick. With poly I can get out of the water repair the damage and be back in the water in less than 30 minutes. Mahalo!
I've used epoxy to repair polyester boards. No problems yet. I would say that the difference in flex might create stress in the transistion between materials, but the way repairs are done(like filling dips with resin and carbosil for instance) screw up the flex pattern anyway. Epoxy sticks very well to sanded and cleaned poly, that's for sure. regards, Håvard
eric, i have a budddy who lives in Queens and surfs Long beach whenever it is decent. He's always trying to get me to shoot up theier when the wind is north! Might take him up on it one day this winter
Long Beach has been nice quite a bit this fall (I'm sure that Manasquan was too). LB can get good, and especially in winter, you have your choice of spots. You won't see me out in the winter though. I give up on surfing in the cold when it gets into the 40's, it is too cold to change in the parking lot for my old bones. Too many times standing around in the parking lots laughing (histerically, and hypothermically) with hands too cold to hold a key to open the car, I guess. So after Fla I'm done until spring. Time to build some. Eric J
Louis: I own polyester boards that I repair with epoxy. Next board, I'm either going to shape my own and glass with epoxy or get a hand shaped epoxy board. The largest repair job I did with epoxy is a cracked nose from hitting a rock. The nose needed to be completely reshaped and the cracked glass extended about 14 inches from the tip. I made a redwood nose block, sanded down the cracked glass, and reinforced the whole nose area with fiberglass and epoxy. It worked great. Best thing, I was able to match the gloss of the rest of the board just by sanding to 400 wet and taking a buffing wheel to the nose. No gloss coat or acrylic finish. The epoxy buffs out like glass. I've been riding the repaired board for about a year now and no delams in the repair area. Also, the nose seems a bit tougher than before. I've had a few minor bumps with other boards and dropped it once onto concrete. It only scratched the epoxy. If it was polyester, I think it would have been in the shop for another ding repair session. Yes, it does take about a day to really sand the epoxy. But, I normally would not repair a ding the same day either. I wait about a day to make sure the foam dries out in case any water penetrated the glass. Yes, it does cost more. But, I've had to repair a lot less since I've used epoxy. My board use to be repaired about every 2 months, always in the nose or rail areas - I haven't had to repair it for about a year now and it is scratched from dropping it onto CONCRETE. For me, it was worth the time and expense to go with epoxy.
I'm convinced! I will definitely give it a try. I don't think I can convince my glasser to use epoxy though.
Greg, How well does your resin work on XTR Blanks (extruded)? I have had problems with delamination with Pulse surfboards made of XTR. Does your resin solve the problem or is the problem in the blank. I imagine Pulses are glassed with your resin?
Delamination is something that happens with extruded polystyrene. It is a foam issue not a resin issue. Our resin works fine with XTR but it doesn't solve the problem. Using an Edro EPS foam does solve the problem though.