Anet A8 y tensioner (fits 16 tooth gt2 idler gear)

I needed this to fit a gt2 idler which is slightly wider. I also remixed the bolt/block to be an m8 with a longer bolt. I needed to chase the threads on the block with an m8 1.25 tap to get it to fit. You can try reducing the size of the bolt as well but i've never had much luck with that.

Designed using tinkercad for the tensioner body, and fusion360 for the block and bolt.

Edit 07/24/2017:
These are the GT2 idler pulleys I'm using: https://www.amazon.com/gp/product/B01H3EY4X4/ref=oh_