How does a first surface mirror work (2 15 sub special )

After a bit of a hiatus, AlphaPhoenix is live again In this video I print some parts, coat them in resin, and chemically silver that resin surface, making a firstsurface mirror akin to telescope optics but MUCH less precise. (also I use said silvering process to make a play button with actual silver ) Hope you enjoy the classic story of scientific failure and iteration, and maybe learn something about mirrors while you re here If anybody is curious to try this themselves, this is very much not a sponsored video, but I was using SmoothOn s XTC3D as my smoothing agent and Angel Guilding s SpraySilvering chemicals to deposit the silver. if anybody knows more about these products that might explain some of the difficulties I ve had, I d be all ears Technique loosely based on this very interesting paper from Vaidya and Solgaard: Music Credit