James Webb Mirror
thingiverse
I haven't printed this yet. It's on my long to do list. Should print well, no supports, on an Ender 3 sized bed. The printed pieces should accept these "mirror" panels off amazon: https://www.amazon.com/gp/product/B09722MG6S/ref=ox_sc_saved_title_1?smid=A2TIIBQ6XY8TD9&psc=1 All printed panels can just be glued together. I've named them in a way where it should be obvious which are needed where. Print 6 of each stl except the inner piece that does not get a mirror. Just need one of those.
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