PLA Spool buffer

Have you got a printer that is expecting PLA filament spools with an inner diameter of around 35mm, but bought a spool that has a much larger inner diameter? Print this spool buffer to reduce the inner diameter so that the PLA filament spool will feed neatly.

You can customise this file, allowing you to measure your printer and filament spool so that you get a buffer of just the right size.