I poured my mold using a 2 part silicone. The kit I bought came with colors and glitter so I made 2 colors. I thought it would make it easier to see when it was mixed. I refrained from using the stripper glitter. It says the bubbles will come out by themselves but I popped it in the vacuum oven (no heat) just to be safe to remove the bubbles. It was thinner than I expected and I had a couple of leaks. I was able to plug them with air dry silicone in the tube. I filled them most of the way and glued the tops on. Then finished it with a syringe.