Belt tensioner Wanhao i3 plus

A Jat, or, just another tensioner.
Small, but it works. The slider sits firm in the space above the bearing holder.
You will need 2 bolts of 4 mm, 10 mm long and a 3 mm bolt. You can use different sizes from 10 mm up to 30 mm.
The existing bolts can be used for attaching the belt (tight fit).
And, of course, you will need some zip ties to secure the belt