kinetic sculpture 3D printed by pkccpkcc

Last crawled date: 3 years ago

Hi,
This is my very first design for kinetic sculpture.
The design is inspired by David C. Roy.
Warning: this is not a Print & Run project, but a rather challenging one. A lot of tinkering is expected.
Requirements to make this sculpture:
-8mm diameter shaft that is about 10cm long (M8 should work too but it will be less efficient)
-3X(4 for more stability) ball bearing 608z/608zz or equivalent , ceramics/hybrid bearing is preferred but not a requirement (switching to hybrid bearings increase run time by 20% in my case)
-1X constant force spring (I get mine from a 5m tape measure which costs about 1.50 USD)
(All screws below are socket head cap screws)
-M4 12+mm long X3 or X5 (see note below)
-M3 8mm long X10 or X22 (see note below)
-M3 12+mm long X4
-M3 16mm long X8
-M8 32+mm long X1(for securing the spring)
-M3 washer X9
-M8 washer X8+ (could print it instead, but more friction may apply)
Printed parts:
one of each STL file if not mentioned below.
-break2 X2, X4 or X6 (see note below)
-deco_ring X2
-wing X24 or (wing_split_partA + wing_split_partB) X24
-center_piece/center_piece90d/center_piece60d choose one(see note below)
NOTE: There are 3 options for center_piece: original(180 degree), 90 degree, and 60 degree. The only difference is that each time the spring is triggered, it will turn 180, 90, or 60 degree. Its all depending on how strong your spring is or how fast you want it to turn. 180 degree releases the most force(speed).
printed part "spring_holder" and "spring_axle" may not apply for your spring, it is more than likely that you will need to design your own holder giving that spring comes in different sizes and ways to secure.
update on 2021/02/25: fixed wing bug, option to split wing into 2 parts for those who have smaller print size(screw together with M3 length of 8~16mm).update on 2021/02/27: renamed part name 'magnetgear' to 'front_wheel_connection' to avoid confusion. No magnetic gear is implemented in the final design.update on 2021/03/03: uploaded a short video demonstrating functions of key components.update on 2021/03/10: uploaded a video showing an example of how to obtain spring from tape measure.