Practical, no doubt, but pretty unsporting, especially when it’s possible to cast custom lenses at home using silicone ... molds of lenses, good enough to try a few casting shots with epoxy resin.

One effective way to achieve this is to personalize your designs with custom molds ... The typical lifespan of a mold depends on the material. For example, silicone molds might last for about ...

Casting parts in silicone is great, and 3D printing in resin is fantastic for making clean shapes, so it’s natural for an enterprising hacker to want to put the two together: 3D print the mold ...