3D printed closed loop timing belt - any good?

Let's find out if we can use 3D printed closed loop timing belts. I was testing with different designs, materials and also I tested these 3D printed belts from mechanical strength aspect too.

***Important update for 2.5.0 PrusaSlicer users: Print Settings / Layers and perimeters / Perimeter generator: turn from Arachne to Classic. And turn off Fill gaps.
Cura users: Sorry, new 5.x currently don't want to print those two lines continuously. Can't find the solution so far, except to use older 4.x version.

If you like my work you could support me by sharing and liking this video.
But also any donations are welcome too:
Patreon:   / mytechfun  
Buy me a coffee: https://www.buymeacoffee.com/mytechfun
PayPal domations: https://www.mytechfun.com/donation

STL files and results you can download from:
https://www.printables.com/model/2155...
or
https://www.mytechfun.com/video/194

Contents:
0:00 Introduction
2:13 Design
4:41 3D printing settings
6:29 Materials
8:41 About pulling force
10:06 Tensile (pulling) test
12:00 Prolongation (deformation) test
15:27 Torque test
20:33 Durability test
22:56 Results
24:42 Conclusions

#3dprinting #timingbelt