Scalable Y Carriage for Any Printer

thingiverse

EDIT: 2-12-2020: So the original design needs overhauled. I had printed this before I actually tried to re-assemble the printer on a new 2020 extrusion frame. Unfortunately the rods aren't far enough away from the underside of this to clear the frame. Basically the bearing holes need to be offset at least 5-10mm lower so it can clear. I redesigned this not too long ago, but I didn't like how it looked so I'll probably start from scratch as I also want to make the base larger so there's less leverage on the arm mating surfaces. The original one was also prone to having the bridge at the top of the bearing hole crack especially if the springs were tightened as they need to be. I may incorporate the sliding mechanism as suggested originally as a dovetail fit should be quite rigid if done properly. Original: I was inspired by xxalxx's design and after printing it out I wanted to customize it for my linear bearing. After designing and printing a part that would snap into place on the original I realized I would be better off designing it from scratch and changing some of the geometry to shave on weight and also to make the arms really lock into place. I used Solid Edge to design this and I've done a few iterations, but I believe the tolerances built in (.1-.2mm between the mating surfaces) should work on a well calibrated machine. I designed this so that I can make new arm pieces to simply expand the maximum size of the bed. I wanted to implement a sliding mechanism with a screw to expand the arms, but I feel that may introduce too much slop without a total redesign of the arms. The arms can be easily chopped and extended if you wish, just be careful not to simply scale it or the bearing holes won't be right.