Some of us have looked at clear resin jewelry casting kits online and started ... [Nava]’s attempt to use a plastic bag and a cup as an expedient stand-in for a proper mold was not without ...

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 ...