Salvador Dali Melting Clock
thingiverse
Although I used a 0.8mm nozzle printing fast at 0.5mm layer height, any nozzle and line height combination will do. I've repositioned both the larger face parts and the smaller base numerals so they print upside down for a smoother look. If I get a few million spare hours I'll print one with much finer settings one day, but it doesn't look too bad under real light, even with a fat nozzle. The center hole is small, and will need drilling (or altering in FreeCAD/Blender) to produce whatever your mechanism wants. It needed 8mm for the cheap ebay mechanism I used. Also, I ordered a "long shaft" version to get the hands in front of the thick black numerals. The stl of it assembled is just to illustrate the finished look and isn't meant to be printed whole, just the four parts.
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