This is an updated Y-Carriage with printed bearing holders and a printed belt clamp/tensioner. I dont like the idea of clamping belts with zip ties and the i3 Steel does not have an adjustable idler pulley so i added a clamp tensioner to the bottom of the y-carriage. To use this belt tensioner you will need to use the updated bed plate as well. There is a stp file of the assembly as well as the .stl files for the printed parts and the bed plate.Parts were designed in Solid Edge ST7