Anet A2 Y Axis Stabilization

thingiverse

Got tired of my Y axis flopping around so I upgraded to smooth rails on both sides. To ensure stable performance, pillow blocks must be aligned almost perfectly, or the entire system will shimmy back and forth. I used knockoff drylin LM8UU bearings, which are slightly larger than standard bearings, so you may need to customize your own pillow block design. A 340mm 8mm smooth rod worked well for my 220x280 bed setup, but you might need to shorten the rods based on your specific printer dimensions. To properly preload the bearings, I had to tap them into place and then file down the pillow blocks until they were snug. This design should work on most printers with a similar format, although I haven't tested it myself. Thankfully, it has exceeded my expectations and provides rock-solid stability. Unfortunately, I don't have a parameterized SCAD file to share yet - I'm still learning the ropes! But with this upgrade, I can now reliably complete full bed prints without any issues. Check out the video of it in action at https://www.youtube.com/watch?v=yJvZXR3uGE0.