Belt tensioner Wanhao i3 plus

Another x-axis belt tensioner for the Wanhao i3 plus (perhaps the other models too).
Is is quite rigid.
You will need 2 x 4 mm bolts of 6 mm long and a 3 mm bolt, up to to 30 mm with nut.
The original bolts can be reused for the belt itself.
You can print it with every infill you like but I used just 100% for strenght.

The print orientation, for me, was straight up with supports.

Update: Added a tensioner, based upon the same idea, for the y-axis.
Works like a charm.