Me and my friend grobeyy just now finished laminating one blank and resin swirling the deck of another. The blank that we resin swirled on the deck was made from an eps blank. The blank was not laminated but only sealed (with only epoxy resin and harderner). On top of that we did the resin swirl. Taped it off at one inch from the rails. The problem was that when we pulled the tape off the resin was not only at the tape line but past it on other spots past the tape line.
I believe taht this happened due to the pores that expanded polystyrene blanks contain. I think that the resin soaked through the poars and came out on the other side (the other side of the pores) of the tape line. Do you guys believe that this is correct???
If not, then what happened???
Would this happen with a polyeurthane blank??? I dont think it would, but want to make sure.
P.S. The tape was down good. Ive used that same tape before on other cutlaps and it has worked
P.P.S. Ive been using epoxy resin (rr) lately and found out that a good way to clean it off your skin or tools is to scrub an SOS pad on it
P.P.P.S. Do not, i repeat do not, use foil on your glassing racks when you flip you board over to perform the cutlaps. I was using epoxy resin (rr) and the foil sticks like crazy on it. Totally screwed me over. Wax paper though works. I read in the archieves that foil works, apparently not. Maybe with polyester resin…but definitly not with epoxy
Me and my friend grobeyy just now finished laminating one blank and resin swirling the deck of another. The blank that we resin swirled on the deck was made from an eps blank…
Hi psychedelia ! ...I don't have an answer to your question, but a question for you... HOW did the resin swirl come out on the eps blank ? I'd love to see it ! [ 'p.m.', me if you like] cheers ! ben
the board turned out amazing but my freind psychedelicsurf was extremely pissed because one of the boards had a million tiny bumps all over it.
what is this and what do we do about it. they are really small and are definately not air bubbles, you can hardly notice them but they are everywhere. we used eps boards and epoxy (rr) resin over two layers of 4 oz cloth. my suggestion was to leave it alone ( i dont thinik there are any alternatives) and just hotcoat/sand. i think it’ll be alright but that doesn’t solve the mystery…
What a great thread; don’t know what the heck is going on but I like it… …to keep eps cutlaps from bleeding through I was using a quick batch of clear epoxy right on top of the tape line and exposed rail foam. This acts to seal the tape. Do your colored lam just as this seal coat starts to get gelled so there are no wierd marks caused by any uneven application of the tape seal batch.
Plz describe the “million little bumps” with more detail; perhaps only your mind saw these things…
Your observations are right on. Once you seal your EPS blank the surface is still quite rough and pitted. My experiences with doing pigmented epoxy lams with inlays and cutlaps follow some of the basic issues when laying down fine resin pinlines on sanded polyester surfaces. The more time you take in smoothing/filling the epoxy surface the less likely you will run into bleeding tapelines at cutlaps and pinlines. A clear sealer coat at the tapeline works as cheap insurance and saves a bunch of frustrating cleanup later. Hope the pic post works.
+oneshaper the bumps are still there. i squeegeed the surface flat and everything. dont know what happened. this has happened before to us - both times when it was very cold. the weather i guess must play some part in it. they small but everywhere. a hotcoat/sanding should take care of it though. this happen to anybody else??
I’ve glassed using epoxy as low as 55 deg F. I almost always microwave my resin component for about 10 seconds. The stuff flows like water for the first 5-8 minutes or so. The only “millions of bumps” that I can envision are the weave pionts in the cloth; you know, the ‘over’ part of the over-and-under within the cloth. Do the m/o/bumps look like they are coming up from in-between these points or do they coincide…? Could it be more granular in nature, like someone chucked a handful of sand into your batch? Could be a temp issue. Blank at same temp as room? Is your pigment interacting with another pig? I’ve seen some pigments repell one-another like in a colloidal suspension, leaving what looks like millions of kicked-off tiny chunks everywhere… HTH. Board looks great BTW (Tomas).
well got the same bumps on some other boards today. same foam/same resin, however the temp today was a lot warmer, so temp probably isnt the prob.
also today i realized that i used the same epoxy resin on a clark foam blank for laminations. no bumps on that one, it came out well. so i guess that its a foam problem. im using sfoam blanks. after hotcoat/sand it should be ok but these bumps are just downright annoying. i wish i knew what was causing them. arghhhh
anyways, the same thing happened to me on my first pigment job, with the bleeding tape. nothing short of a 4 inch pinline could have saved it, but luckily, when i pulled the tape it pulled with it varying amounts of the bleeded (is that a word…?) pigment with it… so out came the sharpie and about an hour later, i had transformed the edges into a camoflauge design… it came out quite nice… but this happened to me with Clark PU. i’m pretty sure it was a tape issue.
