A throw away cotton mini roller is a handy tool to have around when you are laminating Epoxy or Poly. If a rail starts giving you trouble or you are worried about your resin setting to fast; a small 3 inch roller will really speed things up when you are trying to get those dry spots on the rail or have recurring bubbles. I prefer the tighter nap covers. The longer nap covers hold too much resin. I have trouble with bubbles mostly on boards with hard rails, hard tucked edges and butt cracks. Be careful using Cabosil to thicken resin. Add to much and your resin will set “cloudy”. I use it the way Loehr uses it in his video Epoxy 101. To set fin boxes and occasionally putting a little on my finger and forcing down those butt cracks.
Just had this same issue again. Anyone ever have this problem? I think it might be cloth related but really not sure. 6x4 over pu using rr quick kick
Never had that happen with Epoxy over Poly or Epoxy over EPS. I think you’ve got some kind of temp or room problem. Probably not cloth related. The problems I have with Hexcel are saturation, small air bubbles around hard rails and strings. You were right in your earlier post when you stated that Poly glassers are more strenuous in their squeegee work. You may be pulling to hard with the Squeegee. Next time try a “cheater coat”. After you have everything saturated and tucked, pour on an amount of resin on and squeege that off. The cheater coat makes sure everything is saturated. PS looking at your photo again; It appears you are not sealing or Spackle? True? Because those “little bubbles” looks like pin holes in the foam.
The cloth is all definitely fully saturated. Its bubbles underneath the lamination. Here are maybe some better pics. These pictures are post hot coat. Not pin holes from a dry lam. Polyurethane millenium foam...no need to spackle. Shape was clean without gouges. Perhaps blank and resin are too cold however and resin could not flow into the micro holes contained in polyurethane foam? As i know it is very smooth but definitely a pourous surface still. Resin research quick kick is one of the thicker resins out there as well.
Yeah wasn’t thinking Poly Blank. I shape and glass Millennium all the time with Epoxy and Poly. No problema.
What temperature range do you glass them in?
I live in Oregon. My “car and a half” glass shop has a 110 wall heater that I usually flip on the nite before. I suppose I should put a thermometer in there and check sometime. It’s well insulated so by the AM it is “short sleeve warm.