The way I’ve seen it done w/ UV poly resin is: tape off a dam on the rails, build up the bead w/ Lam resin, put it in the light box for a minute, pull it out, trim the side of the bead w/ a sharp razor, put it back in the light box to fully kick. hot coat. sand.
How are you epoxy guys doing it?
i’m doing my first 3 epoxy boards this weekend…
For hard corners with epoxy, tape dam as with Poly.
then wait for the point that the epoxy is set but not cured,
kind rubbery or “green”, it will cut with a sharp blade.
Time from pouring to cutting will depend on a myriad of variables:
epoxy brand hardener (fast, slow, blended)
temperature,
humidity, etc.
You must be careful and know your resin, i’ve found that you may have
about a 30 minute window before it sets too hard, or get in early and have it
“pull” when you try to cut.
It may be easier to let it go & sand to what you want.
Pete
Starting to invade secret stuff now....but here's one little tip: When you hot coat the bottom with epoxy leave a little tape edge up so you hotcoat and build the edge up at the same time....save a step.......this works for poly too.
I've been trying to shorten the steps. So my technique is baste the laps on the bottom with extra for a sweet coat over the lower portion of the rail. Once tape will stick without bonding to the coat I'll run a tape line for the bottom sanding coat but build a dam near the tail. Mix the resin and pour out enough to cover the bottom and rails. I'll leave just enough of the resin in the cup to b-stage the mix and pour that directly into the dam edge. If the resin isn't thick enough to stay near the tape line then I'll raise the tail on the stand until the resin sits in one place.
Once the bottom is just hard enough to not stick to the stand I'll flip the board and do my deck without taping over the dam edge. The extra resin will build up the rail side of the dam so when it comes time to sand you have enough material to get that hard edge.
The X55 accelerator in the RR resin really speeds things up.