Hi there. I'm trying to make my own salmon & steelhead beads for float fishing. I started experimenting with Plastisol and hardener with some injection molds, but I can't seem to get the hardness that I want. I tried as much as two tablespoons of hardener in a cup of Plastisol, and it still cured to a rubbery consistency. Is there a better chemical I can use other than Plastisol to make hard beads that is injection mold friendly? Or is there something I can coat the rubbery beads with after they cure to make them solid? Any help would be greatly appreciated!