Designed and tested multiple times for strongness, I have to test various rpm and lubrification material. You have to print it at 0.15 resolution, tested at 0.1 and 0.15 using PLA.
I made 9 versions of it for different priner sizes or to be able to scale it. I can easy make more if needed.
I started modelling the first versions using tinkercad (lot of try and error.. made 10 different versions and printed it... a lot of times ... since i found one that worked well and was compatible with standard bycicle sprockets (it was really not easy... for me) i moved to fusion360 and redesigned the chain from scratch. Now finally... after over 2 weeks of work i can sell this beatiful working chain that you can easy print and use to create toys or use it in variuos projects/prototypes. My chain is pla, it is strong but i have to use lubrification to spin it fast and make it long enough to give every element of the chain a little time to cool down. Perfect for low rpm applications and compatible with bycicle sprockets but not with bycicles because the widht of the chain is almost doubled (for strongness and better working in general). You can even scale it (see photo; from 75% to 300%) to make it bigger (cosplay?) and it is even working if you scale correctly a printable bycicle sprocket.
The cool thing is that no supports are needed and you don't have to krack it before use, maybe a littlebit if you printed it ad high temperature, but even if you have to crack it a little it works wery wery well.

I am working now on other print in place projects like wirstbands compatible with standard watches and print in place tracks (maybe, because i think somebody already designed PiP tracks for a tank).

Demo videos:

https://mega.nz/file/xUszjAwB#jwR4qDMpia4zLX-aK6wAfIKPPqNM8lpVOKr7r-mJP0g

https://mega.nz/file/RQ0zSbTY#5LmwLWDdlxNua9LJrwhRmUeQbracKffuGwQC_1nyFXE

Resolution: 0.15
Supports: NO