Ive been sanding board and noticed pinair or pinholes, mostly along the stringer. Ive looked in the arcives and read it can be caused by not enough resin used during lam or dust. To fix it I need to thin sanding resin and squegee it in. But what about the dust inside that I cant get out? Will it have some kind of effect on the resin? Or is there some other technique on fixing them?, there were so many diffrent ways. And can someone correct me if I wong about how we get these holes, I dont want to make the same mistake again, its not like I have alot but its more work and if I do it right the first time, will you all know the rest of the saying that weve been told all of our lives. Thanks for the help
I’d mix some gloss coat resin (finishing) and squeegee tightly, then sand lightly.
Might be caused by slightly raised stringer, if you didn’t plane it down flush to foam.
ALWAYS, always pour lam resin onto CENTER OF BOARD, then work outwards.
Don’t worry about resin dust, it mixes into resin when wet out anyways.
Howzit greenboards, air bubbles can also be the result of to much resin and that means the air is trapped in the resin and you won't be able to get them out. I just did 3 boards that the shaper put grooves next to the stringer which is no big deal. But he also planed the stringer below the foam and it caused air bubbles ( one was about 3" long) since the glass was floating in the area over the stringer. I called the shaper and told him to never do that again. I was able to fill some of the bubble by poking holes through the deck and filling with thinned resin, but what a head ache.Aloha,Kokua
I think it may be from the stringer being raised a little, which I didnt notice before I glassed. I think I need to sharpen my planer, its kind of dull, thats part of the reason I think. Thanks for clarification, so gloss coat, thinned down will be best, thanks. I think I also had some problems with too much resin causing air bubbles it seemed like, that wasnt too much of a problem though.