Step 7: Isopon for strength
Perform this stage in a well ventilated area, make sure you have all of your materials to hand. Once you mix this stuff together you want to get it onto the gun asap without having to find things.
Mix up a small amount of isopon based on the instructions provided with the tin. Smear it all over the weapon, I applied it to one straight section at a time, this way there should be no visible seems along the same face and any visible joins would be on the edges.
Once the Isopon has hardened you can begin sanding, use a fine sand paper and a sanding block to go over each of the surfaces. Once completed you will have a nice and smooth cover to the weapon which should be water proof and provides a great surface to paint on.