High acceleration belt tensioners for AC Vyper / CR6se

I got fed up with existing tensioners for my printer and made these ones from scratch. 

You're gonna need four M5 bolts, two for the tensioners and two for mounting the Y tensioner.
The required length is anywhere from 1 to 2cm, depending on how you long your belts are. The two bolts for the Y tensioner mounting should be 15mm long.

You also are going to need two M5 T-nuts to screw into, any should be fine.

the belt idlers used here are 8mm wide 15mm in diameter ones, on 3mm shafts. Stock ones are wider and WILL NOT FIT. Get some metal ones, the stock ones are plastic. 

ABS/PETG recommended for all parts. Or at least the small idler holders. The outer bodies should be fine with PLA. 

Happy hacking!