Surfboard Repairs : Laminating Surfboard Fiberglass

[poolshark1520]

Thanks for the tip but with the low res video, it's hard to make out the saturation points but I get the jist of it.

Thanks, dude.

[HBCult]

Never know there are MEKP resin.

[greatandoddogre]

The stuff he's using in the video to catalyze the resin, instead of MEKP, is a UV curing catalyst, which means that it won't harden until it's exposed to UV radiation. This can be done by wheeling it out into the sun, or you can use a tanning bed, which is what we do in our shop.

[greatandoddogre]

Actually the MEKP doesn't "make" it harden. Most polyester resin is "pre-promoted" meaning that it will harden eventually no matter what you do. What the MEKP does is kicks off the hardening process. Without it, the resin would take 6 months to a year to harden. MEKP is not a hardener, as most people think. It's an initiating catalyst.

[mathiasshow]

Can anyone tell me what the catalyst in the resin actually is? Thanx

[1kevmon]

the catalyst in the resin is what makes the resin harden.

It is MEK peroxide