The process relies on the use of printed resin molds ... air to force the silicone out of the nozzle and into the waiting mold. It’s basically using a bunch of home DIY gear to create a ...

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] relates. His journey into custom DIY optics ...