Out of date!! Check v2! Anet A8 Y carriage 3 bearing conversion upgrade
Description
This file is out of date! Only use this if your carriage is upside down and you like it that way! You want the carriage rails that have the housing mounts to be above the rail which holds the y-belt, so the y-belt is closer to being parallel with itself. You can find version 2 which fixes this here: https://www.thingiverse.com/thing:3085251 That said... This is a bearing/bushing housing which converts the Anet A8 stock upside-down y-carriage to a 3 bearing type. Three points must exist on a plane. Also provided is an extended version of the housing which mounts through the original housing screw holes. The extended version uses about 2x the filament (12g vs 6g) however, and should probably be printed with a brim of 5mm. The extra length of the mount could make it more sensitive to any bends in the carrier as well. The stock m4 screws can thread directly in to the vanilla extended stl, and I also uploaded a m4 nut version and the .scad file. You'll want to make sure you put this on the left rail of the printer (when facing the printer), as the right side bearing housing is what contacts the y-endstop. Just like the original, you can feed a staple through the housing to retain the bearing. I wanted this because the stock carriage I have is so bent up that I was having a really hard time getting my bed to glide smoothly on the rails while using tighter tolerance bushings. They would slide freely independently, but once all assembled on the printer they would bind up. Keeping 4 points level and parallel is much harder than 3, and this resolved my issue. Additional benefits include less friction and weight reduction. If you're coming from stock housings, this print can save you over 50 grams on bed weight. The base stl file is set up so there was enough bite on the stock m4 screws to grab on to this bearing housing also. Just loosen the carriage screws until you can press the bearing housing flush to the carriage, then while pressing the bearing housing flush to the carriage, tighten the screws back down. I was concerned there wasn't enough thread there, but I gave it a few good yanks and it didn't budge. You could also use longer m4 screws here to thread right into the housing. I personally think the base stl is the way to go. Also included m3 and m4 nut versions, untested by me as I have a well working setup already. I've also included the modified .scad file if you want to mess with the nuts, change the housing diameter, screw hole size, etc. If you do want to use nuts, you'll most likely have to drill out the m4 threads already in the carriage, or use m3 sizing. You'll also need longer m4 screws (20mm) than the originals. If using m3 sizing you'll have to take more care with centering and aligning the housing and carriage rail. **Or use the new extended version :) But seriously, you should probably fix your carriage and use the new version :)
Statistics
Likes
10
Downloads
0