ANET A8 X belt Tensioner

Hi, I made this X belt tensioner. All you need is on the last picture. You dont need longer belt, you have to shorten it a little. There are some imperfection in drawing (It dint print one hole, I had to drill it). I am attaching sketchup and obj file.

Update: I fixed drawing, no changes in design. I use it know for few months and it works fine.