Ender 3 pro Y / Z axis tensioner 4040 extrusion

Remixed the Y axis belt tensioner from the post below to use with the 4040 extrusion of the Ender 3 pro Remixed the Y axis puller for more belt adjustment Remixed low bearing height that caused the belt to rub on top of the 4040 Y axis extrusion Remixed X axis puller to support bearing in the center. (was causing bearing to jam) Added Y axis M4 x 50 mm bolt spacers to avoid end play PLA not recommanded, PETG and ABS are strong enough with 100% infill I printed the pullers with 65 deg support angle, and cases with 45 deg (depend on your part cooling efficiency)