The shape of the buttons necessitated a two-piece mold, into which [Gina] embedded two channels: one to inject the resin, and another that would let air escape. The red, green, blue, and yellow ...

The Pennsylvania company was started by four friends and transitioned to an employee stock ownership plan (ESOP) in 2018.

His journey into custom DIY optics began while looking ... [Zach] ran into a few problems along the way, like proper resin selection, temperature control, mold release agent compatibility, and ...