Practical, no doubt, but pretty unsporting, especially when it’s possible to cast custom lenses at home using silicone molds and epoxy resins. Possible, but not exactly easy, as [Zachary Tong ...

Because epoxy resin dries so slowly ... Make a bold move with big, vertical waves of epoxy. You can do this by pouring one color first for the foundation and then using the trowel with one ...