You might recall last month that I posted about my 3D-printed spectacles.

Enough people asked me for the files and for details on how to order lenses and mount them into the frames that I figured I’d release everything with instructions - and also redesign the hinges a bit so the temples fold more compact, something I meant to do for some time.

  • lemmynimal@lemmy.world
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    2 days ago

    But yeah, to order the lenses, I do have to go through opticians.

    That’s unfortunate. I’m trying to troubleshoot some problem that may be due to how the lens are made (or not). So having some understanding and control of that part of the process could have helped.

    Firstly, are you sure those test lenses you’re using are polycarbonate?

    Good question. I weighed my current frame + lens and printed frame + trial lens to pick trial lenses that match the weight. Like you, I’m execting to be lighter in the end but wanted to be on the safe side when tweaking the frames.

    The trial lens are indeed glass but I’m using “plano” (0D) lenses because those match the weight. The actual lens is/will be plastic, but not polycarbonate. Its some material that’s only referred to by its index of refraction.

    I’ll definitely add cable temples to the list of things to try and see what works well.

    But here’s a sneak preview:

    Nice! I haven’t even thought about the case yet. I was probably going to reuse an existing case but now this is giving me ideas :) Although at this point, I’m still mainly focused on solving the (medical) problem or at least gain some insight.

    If you don’t intend to change the shape of your frames, the easiest is to design around old lenses you have lying around.

    Indeed. Unfortunately, the main thing I want to do with 3d printing is to make frames with smaller lenses. They don’t make these other than for children and child-sized faces. So I don’t have any old glasses with lenses of that size.