Once the resin dries, you can sand down/snap off any barbs that have remained. I had a few barbs (as I mentioned earlier, I'd never worked with fiberglass before either and it was quite messy) and once the resin dried, I snapped the big barbs off and sanded the rest down. Then I trimmed the fibers with scissors.
I am also going to install some foam to keep the fiberglass from rubbing on my jumpsuit, and to keep them from rolling around on my arm, as the fiberglass adds a little extra weight.
Just be sure to sand the inside of the gauntlets down first to give the fiberglass resin something to hold on to!!!! Just sand them down enough to feel rough to the touch!!! That should do it!
Also, be sure you don't breath too much of the resin mixture. You'll tend to get a little loopy! Make sure you are in a well ventilated area.
It's actually quite easy to do, with some practice! Good luck!
