I couldn’t reply to my post since I don’t have enough “points”. Kind of strange that I can post but not reply to it. Anyway, I use poly composite resource UV cure resin. I do wet the roving and cloth first. I put one piece on each side before applying the second piece of cloth. The bubble seem to appear as I am applying the second piece of cloth. That’s why I was thinking about letting the first piece cure and then applying the second piece. Sorry I didn’t take any pics. Thanks for the help.