Hi wc97. I believe yours is indeed the post I was reading.
My Y Axis is completely non standard. it is a 20x60 V-Slot. On the wide side which is horizontal, there are two slide rails.
Each of those slide rails is mounted in the outer two tracks of the three that are there. There is a OpenBuilds plate 80 x 150 mounted to the two sliding bearings lengthwise along the Y Axis.
In the center of the plate is a lead screw block. It's not the right thread for the lead screw, so the block was drilled out. At the end of the plate is a bronze lead screw holder from an old Z axis gantry that is the correct thread.
So, the lead screw rotates in the bronze adapter which is attached to the build plate which moves the build plate. It is actually very stable and precise. The block is really there just to support the lead screw.
With the two slide rails, there is almost no friction on the axis. There are some other open build blocks that are mounted to the plate and extend out from the plate in a Y configuration that lines up with the two back corners of the heat bed and the front center so that I have a three point level system.
I ran this for more than a year when this printer was originally a Tevo Tarantula and the motors where all Nema17 motors on 12 volts.
The configuration is now a 500mm x 500mm x 500mm cube. Centered on the outside of each side are 500mm openbuilds motion systems driven by Nema23 motors. Connecting these two drive systems is a square gantry that goes through the inside of the cube. This is the Z axis.
The Y Axis is mounted on the top of this square gantry.
The X axis is mounted across the top of the cube and handles the hot end.
The Neam23 on the Y Axis is a .9 degree motor and the overall plan was to get another one to replace the 1.8 Nema 23 that drives X currently.
The system is powered by 24 Volts. I may replace the hot bed with a larger one as the plan for this printer was for large objects.
Any other questions, please let me know. This printer has been a tank for me and I really only got into trouble when I upgraded the motor. I'm sure it will get sorted out and I will get the correct settings into it.