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+--- Thread: Mirrors made with spinning resin (/showthread.php?tid=2083)
Mirrors made with spinning resin - Paul Ferguson - 06-03-2025
"For the telescope build in question, [Unnecessary Automation] needed a concave mirror. Trying to get that sort of shape with glass can be difficult. However, there’s such a thing as a “liquid mirror” where spinning fluid forms into a parabolic-like shape. Thus came the idea to spin liquid resin during curing to try and create a mirror with the right shape."
https://hackaday.com/2025/06/03/spin-casting-this-telescope-mirror-in-resin-didnt-go-to-plan/