Hi, it´s happened to me twice already. I make a carbon fiber sheet and on the surface there are pores and micro pores. I do it with a glass, once with weight making a sandwich with another glass behind and again, without weight and without glass behind. Both pores have come out 
Something else happens to me, too. To cut the CF I use Dremel with disc to cut plastic. If I don´t make the cuts fast, due to the heat of the cut, along the cut the epoxy resin remains as curved, to the sides of the cut
