I embarked on my first use of Fiberglass Resin this weekend. I'm starting with the Avian Shoulder for Varian's armor. The whole process was pretty easy, although there were a number of things I had to do in preparation. I ended up ordering the resin from Tap Plastics, it was cheaper even with shipping than to buy it at the local Home Depot.
On the left hand side you can see I ambitiously mixed 4oz of resin, even with a set time of 20 min, I only went through about 1oz on the first coat. I held the sacrificial paint brush in the center of the mixing cup until it set.
Next I need to finish the properly scaled Lion shoulder and resin that.