Nikon P900 eye cup
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May 2021 update: The original PLA print split because of the force required to securely grip the over molded rubber on the P900. I printed a new replacement part using black PC Carbon Fiber with minimum part cooling air (5%). I expect the new print will be about 50% stronger but time will tell. Nikon P900 eye cup, two-part design. A rigid PLA adapter with a flexible eye cup. I created this for a buddy who wears eye glasses and takes bird pictures. This version has a thread hole to secure the eye cup to the camera, because he lost the last version on a beach in Namibia. The PLA adapter has something resembling barbs or ridges that grip and deform into the thin rubber surface around the P900 viewfinder. The PLA part provides a mounting surface for the flex eye cup. Be warned, printing the eye cup with flexible filament is a challenge, assuming you want a nice surface finish. I eventually printed with no supports or rafts, 0.4mm nozzle, 0.15mm layers and in vase mode. I think the underlying cause is that flex eye shell has a constant radial thickness while the horizontal printing thickness changes. Flip both parts over then print with no supports. The camera top side of the PLA part has a slight curve. The flex part matches the PLA but if you are left eyed it also works rotated 180 degrees. Have fun printing it I guess? -Peter
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