Replacment Cover for Stern Navigation Light

thingiverse

The cover for the stern navigation marker light (white) on my classic runabout disintegrated after some 57 years of UV exposure. Not knowing the brand of the fixture and given its age, I didn't even bother looking for a replacement. Initially I tried using syvwlch's SCAD thread library, but I was having stringing problems that required too much cleanup, so I hit on the idea of partial internal threads using a pattern of spheres. I would have preferred to print this in nylon but didn't have enough on hand. The only other white material I had was PLA. In use it softens a bit due to the heat of the light bulb, but so far doesn't show signs of melting. YMMV! Print Settings Printer Brand: RepRap Printer: Prusa Mendel i3 Notes: This thing is 80mm high: I had to change my post-print settings to home Y instead of X upon completion to avoid crashing the extruder stepper into the frame of my Prusa Mendel i3 when it homes the X-axis. Post-Printing Note This thing is 80mm high: I have to remember to lower my extruder by at least 30mm before the next print to avoid crashing the extruder stepper into the frame of my Prusa Mendel i3 when it homes the X-axis.