Tried to do my first lamination today 2x6oz with resin research epoxy, and there seems to be almost wave like lines in the glass. In some spots you can see the weave and and others you can’t. Is this caused by not letting the resin soak in to the cloth for a long enough time; dragging too much resin out of the cloth or something else. I was thinking of just putting more resin on top almost like a gloss coat. Will that take care of the problem or just cause more? Thanks for any help.
yeah… i lightly spackeld the board and then sanded with 100 grit probably down to the foam in places. i gotta go to work in the morning, gonna take the heater out of the garage should get down to about 50 hopefully have a chance at that stage B thing. thanks for the help
IMO that Moire thingie shows what happened pretty clearly. I’ve had it happen with two layers over Clark Foam using polyester when I squeegeed too hard and got air between the layers. Where the high spots of the weave contact, it creates gaps between the layers. If the lam is too dry, the gaps will have air in them.
In any case, you may more easily see air bubbles between the weave of the two layers when you apply a fill coat. A possible solution would be to heat the resin so it thins out a bit. Brush it on but have a spreader/squeegee handy to really push it into the cloth. If you have an older stiff brush, you might try jabbing the ends of the bristles into the area after the resin is spead around.
With some luck, the resin will penetrate and fill those air holes. Follow with another fill coat brushed on as usual. Worst case, you’ll have some visible air and possible small leaks after sanding. Leaks might be remedied with a final gloss coat.
A way to test for leaks is to put the board in the sun and spread some soapy water on it. As it heats up, it will outgas and create bubbles in the soap film.