I’ve gone over installing the X-axis and Z-axis F8 lead screws, so now lets check out how to install the Y-axis F8 screw. One could tear a whole machine up to do this, but after a little thought, the method I used made this lead screw install the easiest of the three. Check out the video below for most of the steps, explanation to follow. If you just want to see how fast my ZTW 7×12 is with upgraded X, Y, and Z axes, just skip to 0:32 (original test video at the end for comparison).
To explain the video, in the beginning you’ll need to loosen the set screws on both the driving motor and the collar holding the other side on the bearing. Remove the circular piece that holds the bearing opposite the Y-axis servo motor. Once this is done, just roll the lead screw out. If you have a hand drill available, tighten it down on the end of the screw and reverse everything out. this will speed things up considerably. After this is out,