fish eyes-pin holes?

General Discussion
1

…sometimes not all is “wine and roses”.

This is the first time that I have very small craters in a HOT COAT!; also the first time that I see them on a hot coat over 25 years building surfboards.

They do not look exactly like the ones you would obtain in a gloss coat (but may be because the coat is on the lamination not on a resin only coat…) They are small, around 2mm and look deeper.

Without a problem on the deck hot coat, same brush, same resin, same bucket, same rack, etc.

The only stuff that I did differently was to pass a brush (always use that brush) to clean the dust after sanding laps, previous the bottom h coat. So possibly the contamination came from that brush. But how that brush was contaminated? I mean, I use it only to clean that and to clean shapes before taping…

2

Are you using a different than usual tape?   I once had the sudden appearance of fisheye, that we traced to a change in the adhesive formula used on the masking tape. You have some detective work to do.  Review all your proceedures.  Good luck.

3

You use the same brush as a duster that you hotcoat and gloss with??  Why??

4

…hello Bill, the same 3M tape, also the same roll.

But I do not see how the tape can affect the bottom hot coat?

Thanks

 

-hello Mcding, the hot coat brush was the same for deck and bottom. The other brush is a very soft one; the same used on barber shops for clean the neck, etc. I only use this brush to clean shapes before taping and clean dust from laps, to avoid the use of the air compressor.

The problem was ONLY in the bottom hot coat not on the deck and this board do not have gloss.

Also that brush was not used for any gloss coat.

I use different brushes for the gloss.

 

5

how about, maybe a couple of beads of sweat dropped on it?

6

dirt on the stirring stick or in the bucket.  Dust that settled on top of the jug, and spilled when you poured.

7

Could be

8

evil spirits.

Did you water your ti Plant at the door to the shop?

have you been fully imersed in salt water recently?

when was the last time you held your wife’s hand?

did you hot coat in the afternoon or in the morning>

heating up or cooling off part of day?is it just pin air -dry lam?

it could just be nothing but peter murphy giving you some attention.

sand and hot coat again with a squeegee to force resin into the voids

then brush. An agressive squeegee can make for a hungry surface

that a brush and resin applied without a squeegee lets ilttle pinhead bubbs

only rise while the surfacing agent is laying out making you the 

recipient of a blush of pattern air creters.

look close you can see them clearly in adequate light.

 

…ambrose…

fat lams are heavy.

trying for lighter lams

can trend to air voids

in the weave.You can hear

a dry weave suck resin

when it’s quiet as you pass a 

surge of resin over the glass with the squeegee.

PIN AIR