Review on Clear Silicone Mold Making Kit for Resin Molds - Miraclekoo 7 oz Liquid Silicone Rubber, DIY Manual Silicone Molds Making by Michael Dunn

Awesome YouTube seen, not sure if I can link, from Sweet Serendipity who used this kit to build his own keyboard silencer! This doesn't work so well with multi-piece cases as you need to be sure the silicone doesn't go where it's not supposed to, but I'm very happy with how easy the process was for me. I mixed the parts for 12-15 minutes because some reviews lead me to believe the 5 minute directions seem inconsistent and I let them sit for 12 hours. I tried taking it out after 5 hours as I was only using 4-5 ounces of material but it wasn't firm enough in the thicker areas. adds a decent amount of weight to the case.