by A26

Here is my latest project in amateur plastic horology. This clock is based on the mechanism of the Jacobs & Co. Astronomia mechanical watch. Since I lack the mid six figures of disposable income for the watch, I decided to use about $15 dollars of plastic and bearings to build my own instead.

Basically, it's schtick is that both the clock face and the triple-axis toubillon orbit the base with the clock face remaining vertically aligned the entire time. I simplified the mechanism found in the watch a little, but it achieves the same result. I also adjusted the timing of the tourbillon to 1,3, and 10 minutes on each axis so that it appears more animated. The clock also features a differential-style winding drum and a movable ring to adjust the time. Run time is about 1.5 hours using a 3kg weight (far less run time and far more weight than most of my mechanisms, but driving that massive carrier takes a lot of power).

See it in action:
https://www.youtube.com/watch?v=ubW31kDXExY

Just the tourbillon:
https://www.youtube.com/watch?v=-1CfVDa6xGI

I think I uploaded all of the files on here.  There was some difficulty involving changing computers twice and a cross-country move that precluded my posting them earlier.  The last photo is my first working prototype after said cross-country move.

Non-printed materials are:
-16mm long 2mm diameter dowel pins (all shafts except two)
-2mm shaft stock (tourbillon main axis and intermediate tourbillon gear)
-608 bearings
-16x8x5mm bearings (I subbed 3 of the 608s with these and plastic adapters so that it isn't quite as unbalanced)
-28x12x8mm bearings
-string
-3kg weight

Print Settings

Printer:                      

Reach 3D

Rafts:                      

Doesn't Matter

Supports:                      

Yes

Resolution:                      

.15

Infill:                      

varies

Notes:

printed in esun silver PLA at 205.  I used both my Reach printer and my Prusa, but Reach could probably use the publicity more, so they got the shout out above.

How I Designed This

I designed this clock in a free 2D CAD program from which I exported .dxf files to Openscad where I extruded them into .stl models. I sliced them in Slic3r and printed on both my Reach 3D printer and my Prusa mk3.