fish eyes

General Discussion
1

ummmm, are these what y’all call fisheyes???

2

anyone??? if not, what the hell is it and how do i combat it?

3

Yes,

those are fisheyes or better known to me as frogeyes…same/same.

Most likely your surface was corrupted before the coat///////////////poly or epoxy? my friend.

4

looks like fish eyes to me, or the blank is full of bubbles or gas or somthin like that.

Is it poly or epoxy?

5

epoxy/styro non-spackled, is this my (friends) problem? or is it because we did not denature before the hot coat? Temps were right, about 80, so i’m wondering if it’s one variable or two. Also it was 2lb., so i thought the option to not spackle was open??

Thanks for the replies.

6

SPACKLE IS ONE OPTION.

You still need to seal the blank even at 2#…that is most likely the culprit

Also removing all the blush(oily film) off each and every coat is as important as well.

7

Spackle seal?

shudder

8

So what causes this on PU blanks then, gas in the blank…? I have had this happen to me using normal polyester resin, although the temperatures were low at the time.

9

I’m not sure if it’s just the blanks (eps) fault or just the epoxy. I think it’s both at play, because there was no spackling and no denature wipe. How sweet would it be for epoxy users to have something like those baby wipes that you just pull up through the hole that are already moist. I think lysol makes some for cleaning as well. They should make denatured alcohol wipes the same way, lol. Are you saying this has happened to you with pe/pu??

10

I had this problem to with an XPS/epoxy board.

I think that this is caused by too thick epoxy by lamination.

I used a thick epoxy but afterwards I bought a less thick epoxy and that lams better.

How did I solved my fish eyes?

The fish eyes on the deck I lefted like the were and on de bottom I gave it another coat and the problem was solved (had only a few fish eyes on the bottom).

11
Quote:

…How sweet would it be for epoxy users to have something like those baby wipes that you just pull up through the hole that are already moist. I think lysol makes some for cleaning as well. They should make denatured alcohol wipes the same way, lol…

The computer monitor screen wipes of a few years ago (usually individually foil-packaged) were alcohol-based. I don’t know if there were additives that would compromise epoxy or PE. I also don’t know if these are still marketed, considering the current popularity of LCD screens, which typically do not take nicely to a cleaning with alcohol. The “baby wipe” packaging appears to be used with a number of different solutions. That leads me to believe that there is probably at least one company that saturates the fabric rolls and assembles the devices for brand name marketers. I’m willing to bet that that outfit could easily be persuaded to sell a bulk quantity of the items “dry”. It would only remain to determine the correct amount of alcohol (or whatever solvent) needed to be added to each container to properly saturate the fabric.

-Samiam

12
Quote:

Are you saying this has happened to you with pe/pu??

Yes, have had it with a Clarke blank. I am not sure if it was the fact the blank may have been cold or not, but the resin was prewarmed along with the wax and I had six fairly big fish eyes along the stringer. There is another thread somewhere on here about this same thing, from January this year I think.

13

With traditional materials like pu/polyester most likely your surface is corrupted,bad paints/lacquer/tape glue/waxes etc. …or if the temps are low the wax willnot rise…leaving you with a coat of lam(coat a board w/ lam and see if you don’t get the same results)…or the hotcoat resin is old or doesn’t have enough wax solution in it to begin with…Past that,there ain’t much bro.

14

Herb is right.

15

You said that it was 2lb EPS with unsealed epoxy, right?

You need to seal it with either the microballoons and epoxy mix or watered down DAP Fast&Final wall spackle. If you do the DAP route, you might want to give your laminations a cheater coat 30-45 minutes after the laminations. The fisheyes and pinholes in the pic look like your laminate got sucked dry by the foam. Another thing about your hotcoat is to do it on falling temps. No hotcoating when it is raining. Humidity kills the deal. You can also get fisheye looking problems from trying to be stingy with hotcoating (stingy with the additive F too) with epoxy.

With that board, grind on it with 40 grit and hotcoat it again.