With all the talk about epoxy being stronger and lighter, has anyone been making surfboard fins using epoxy?
planning on doing a few in the relatively near future.
isn’t that what the g-10 fins are that tc uses?
yes ive made epoxy fins… heres some DONT’S when doing this…
dont…
start cutting the fins out less than 24 hrs from laying them up…
try to use a bench mounted belt sander when wearing lose clothing…
try to foil the fin less than 24 hrs from layup (see first dont)…
drink while foiling…
use the wrong ratio of resin to hardener (even the slightest off ratio can f’ it up)…
if you use the wrong ratio and it still feels hard, the resin will flake off when you try to sand it… or the fin will be brittle…
Quote:
yes ive made epoxy fins… heres some DONT’S when doing this…
dont…
start cutting the fins out less than 24 hrs from laying them up…
try to use a bench mounted belt sander when wearing lose clothing…
try to foil the fin less than 24 hrs from layup (see first dont)…
drink while foiling…
use the wrong ratio of resin to hardener (even the slightest off ratio can f’ it up)…
if you use the wrong ratio and it still feels hard, the resin will flake off when you try to sand it… or the fin will be brittle…
These all sound like “don’t’s” for poly fins too.
Quote:
isn't that what the g-10 fins are that tc uses?
Yes. G-10 is epoxy and glass.
I used the RR epoxy to make fins.
It smells a lot less. The Additive F doesn’t seem to matter at all. Sanding smells a lot less. The fin panel takes a lot longer to cure. And it doesn’t really end up much different in stiffness (the exact epoxy used might matter here, I didn’t use the highest modulus epoxy from RR, but some 2000 leftover from surfboard lams).
Carbon fiber and epoxy can end up a LOT stiffer if you do it right.
Hi G R Junkie,
Thinking and hoping for epoxy fins,they are a true specialtity item best achevied in a silicone mould for a true copy 100%
measuring component’s is best with a set of e’tronic scales 5kg O.K.
To much of one cat and they go brittle or burn to much resin and they never go hard forget to catalise and your cleaning up the mess.
If you mould epoxy there no sanding required clean up the edge with a craft knife when you pull them from the mould give them a couple of
day’s to go off then on to the board alway’s copy a FIN SYSTEM as the tagged fins are free
Regards Rod
Finfektion for Perfection
Make a mold of a previous fin. That solves a lot of problems.