Hard silicon is something i bought in electronic shop and it is some kind of glue that fishermen use for top guide on the rod. It looks like plastic and it become soft on high temperature.
This is my latest creation of foam, hackle, hard silicone and printed (originally scanned) wings. It is solid, floating and realistic. And most important, this is most popular insect by european flyfishermen and, of course, european trout.
Fly Fishermen of the world, what you think about that imitation of Potamophylax larva. It' s only hard silicone, but i have never seen better imitation of that popular insect. It's soft but very solid. I' m proud of my latest creation!