Glasses Broken Frame Replacement

prusaprinters

<p>Suppose your favorite glasses are broken. Usually this is frame, temple or - most likely - the hinge. But the lenses are OK.<br/> But hey - we have our 3d-printer and enjoy 3d design and printing. Let's design and print our glasses using the surviving lenses!<br/> OK, it's understood my print is hardly useful for your particular lenses. Unless you wear the same Zenny Optical glasses model I buy online here (<em>this is NOT ad - just technical, I hope you understand</em>):<br/> <a href="https://www.zennioptical.com/p/plastic-fashion-full-rim-frame/2329?skuId=232921">https://www.zennioptical.com/p/plastic-fashion-full-rim-frame/2329?skuId=232921</a><br/> So I guess this print may rather provide an inspiration, some ideas and instructions on how to design around your available lenses.</p> <h3>Print instructions</h3><p>Start with a picture of your lens as a canvas. Calibrate it and draw a nice closed spline following the edges of the lens precisely.<br/> Then make offsets of the spline on both sides - internal and external.<br/> Then extrude it - internal part less and external part more - so that you get kind of a "dish" with a hollow bottom. This would be a rim around your lens with a narrow supporting edge from the forward side of the lens.<br/> Print it now! - just this rim. Your lens should go into the rim from behind under pressure and stay there just by friction. This is crucial for the project - the lens should firmly stay there and be possible to remove with some effort. I don't use any groove or support from behind the lens. This makes it possible to replace frames in a couple of minutes. My lenses are sitting just fine, never came out.<br/> So, when the lens rim is adjusted , mirror the design for the second eye keeping the right distance and orientation.<br/> From this point, I guess you can use my model for hinges and temples. Just cut off my rims and attach yours. Scale it to your size and arrange to your liking. If you opt for designing your hinges - do them as big as possible, since we have plastic and not metal.<br/> The hinges use a piece of filament as an axis.<br/> Print the frame and the temples flat. When the glasses are assembled you will need to bend the frame and the temples a little.<br/> You can half-dip the temples into hot water (~80C) and bend manually.<br/> The front should be bent <em>with the lenses in</em> by heating very carefully around the bridge area only with a heat gun. Do not overheat. Do not dip into hot water. Do not heat the frames. Bend just slightly.<br/> Wish you good luck!<br/> Print files are probably of no big value. Just showing I print with PET 0.4 nozzle, 0.15 layer height, 3 perimeters, concentric top and bottom.<br/> UPDATE:<br/> Added Fusion 360 archive, so you could better update the design for your lenses. Good luck!</p>