Y axis belt tensioner for Creality Cr-10 S4 & S5 only. 

3 main piece all self locking, sturdy and hand adjustable. Reuses standard parts, No bolts to buy.

This unit greatly reduces shock, jerking and noise of printer especially at high speeds and acts like a shock absorber.

It mainly works in compression so PLA is fine.

I designed this for Haloween comp though teeth and eyes can just be ripped off.

This design and the bench level access are treats in resonse to my printer which is the trick.

This object was made in Tinkercad. https://www.tinkercad.com/things/jenIqpcgaUC