Bambu Lab AMS roller mod

Three different sized rollers for Bambu Lab AMS to allow the use of larger spools.

If you're going to install this make sure to check clearances before you 1) close the AMS lid and 2) run a long print, especially unattended. Check clearance under the spool with a piece of purge scrap or something. You can check clearance above the spool with a piece of thin crafting foam before closing the lid. Check all around the spool. Check the top gap from the side of the AMS with a light shining through, as a print is going to verify there is enough clearance. First and last slot are easiest to check this way. I am able to fit 203mm spools in the AMS no problem. Smaller spools with the small roller might cause the spool to not touch the rollers at all and can cause feeding issues.

This mod re -uses the stock bearings. You just need a(straight) 3mm steel rod and maybe a file. The seams on the printed parts need to be smooth and round as possible so it spins with the spool. The roller is spli