Fiberglass splinters? Answered
I'm considering using cement in a mold to make rock climbing handholds.
Obviously that would require the holds to withstand torsion in different directions, and so some kind of reinforcement might be useful. I was thinking fiberglass, but I'm concerned that it might open the door to fiberglass splinters in hands. Curious if you have any thoughts in this?
I'm also wondering if small pieces of plastic might work the same way as the fiberglass?