This Y axis carriage mount set DRASTICALLY reduces the play in the entire gantry assembly for the FT-6 printer. The Y belt tensioner is moved from the front carriage mount to the 2020 extrusion and is much more easily tensioned with a simple m3x20 bolt with a fender washer which should fit FT-6 and FT-5 printers. The X belt is secured with grooved caps (8x M3x10 bolts needed) just like the Y belt is in my carrier setup in my design list. The tensioner raises the belt travel by 6mm. This was done to accommodate for a stepper damper on the Y axis. If you do not want to run a stepper damper, you will have to flip the pulley on the Y stepper to raise the belt travel. This setup was designed around many of my other mods, as such, it raises the entire Y axis by about 10mm. This is to regain some of the lost Z travel from the EZ bed leveling system for the FT-6 in my design portfolio.
Print this part with 0.2mm layer height (including bottom layer) with 8 top and bottom layers and 4 layer thick walls at a 25% infill. Place it upside-down on the bed in your slicer with supports turned on all over at 10% density.
Tips are especially appreciated for parts like this. They take a lot of work!