This is a test by me to convert the Y axis of the ender 3 Pro to linear rail.
For this i used 2x MGN12H 300mm Linear Rails some screws and a little bit of ASA filament.
To fit the linear rails correct, i have made a tool: https://www.thingiverse.com/thing:4242580
I used 4x M3 screws with T-Nut each side.
The brackets are required twice and are attached to the guide with 4x M3 screws each. The Y Endstop is attached to the side of the limit switch with an M4 screw.
Now you can mount the carrige with 4x M5 Screws on Top.
Thats it ;)
Maybe i make also a version with M5 Inserts. At this moment it works fine with the thread printed in ASA.
Let me know what you think or if you have improvements.
P.S: This is a test of whether linear rails mean an improvement for me. This certainly depends on the quality of linear rails you use.
My curiosity is a little satisfied;)