July 14, 2024
Description
This remix provides a shorter version of the “d1 gear and axle” that is part of the “Orange D-Axis and C-axis” folder for the Antikythera mechanism. When I assembled my clock, I found that the d1 axle stuck out the back of the D2 gear and interfered with the rotation of the E3/E4 gears.
As a quick and dirty fix, I just snipped/sanded the extra bit off. I wanted to avoid having to dissassemble/reassemble everything. It looks a bit ugly but it works:
But I wanted to provide a replacement part in case I ever reprinted the device.
According to the specs, a 608 bearing has a nominal thickness of 7mm. But the d1 axle appears to be sized as if the 608 bearing was 9mm wide. Thus I needed to trim the 34mm part to 32mm.
But when I measured my 608 bearing, it was actually around 6.7mm thick; using a 32mm “d1 gear and axle” would still stick out by .3mm. That might still stick out enough to cause problems.
So just in case, I'm providing both 31mm and 32mm versions of the “d1 gear and axle” part. Choose whichever fits your situation best.
When I created these modified parts, I just used PrusaSlicer and a negative volume to trim the existing part, which removes the chamfer on the end of the shaft. You may want to sand the sharp edges to make assembly easier.
The included .stl files should be compatible with all slicers; the .3mf versions require your slicer to support “negative volume”. PrusaSlicer works great.
P.S. It's possible that I missed something and assembled the clock incorrectly, and that is why I had the sizing issue. If that is the case, please let me know!
Thanks for reading, and if you use this remix, I'd love to see your print.
License:
Creative Commons — Attribution — Share Alike