Summary

This is a sleeve for those who owns mainly a Geeetech printers that has acrylic+20mm pvc pipe as spool stand. The original spool stand can be quite a troublesome to change and using different diameter for their bushing

This one is simply a sleeve for you to use a cone based mount with any kind of threaded rods for easy change and without the need to keep printing a new bushing ever again

a suggested cone to be printed is here
http://www.thingiverse.com/thing:920183 (this one need to file a lot to make it free