hey i just finished sanding a hot coat on a longboard 6/6-6 glass and foam under feels super soft like i can put dents in some spots that i sanded down along the bottom rail line where the lap meets the bottom. could this be the foam or do you think its the pigmented poly lam? the whole bottom has a slight give besides the double layer tail patch area. glasses about a week ago .75% @ 75-80°
The blank was a millennium standard density 94M wondering if I just over shaped the blank when foiling out? or if the resin just needed more catalyst. It’s hard but not rock hard like UV lam clear I did in the deck?
Will it just be prone to dents more or is it structurally compromised?
Thanks in advance for any input
I think the board just needed time and heat feels rock hard today besides the softest spots i think i over sanded the lap line in those spots. when i press there is a negligible amount of give
Yes that is what I was thinking. That you probably hit the lap to hard in a few spots. Try really hard to get a nice flat lap all the way around. A plastic squeegee pulls them down nice on a free lap. On a cut lap you can do as discussed here; cut and press it down. As you get better at it you will be able to cut right at the tape. If you bend the tape back to far it may come loose from the foam. If you get that lap nice and tight, cut accurately you may not even need to sand anywhere but the nose and tail. Keep in mind that if you sand too much you can sand out the color, giving your lap a blotchy uneven look. You’ll get it pretty much perfect sooner or later. Just go slow and don’t over do it. This is a part of the glass job that people just don’t concentrate enough on.
definitely trying to get more practice with timing the cut on my boards, with this one i cut it too late so it was jagged, luckily a clear lam so the unevenness did not show once’s i sanded and fill coated.
to fix the soft spots i hit it with a 4” strip of 6oz down the rail line with some clear lam resin then hot coated and sanded flush put the gloss over that and its rock solid.
My zipper cuts always look pretty rough so i’ve been doing freehand steady slow cuts on most of my boards right along the tape and have better results that way, does take 2-3x longer but i want a clean cut on my colors