https://www.printables.com/model/617122-lens-cover-for-thermoworks-cf-ir
https://cad.onshape.com/documents/4219ed61cae2a037a825ea4f/w/77703cf360c761032f1dcaca/e/6cffd35cc47737332aeab027
the original lens cap cracked and fell apart, so I decided to design a replacement. first time I've messed with attempting to duplicate an object with curvature, and it was surprisingly easy after I printed out a couple of metric fillet gauges. ended up printing three iterations, but even the first one would've been usable in a pinch. altogether a pretty good one-evening project.