About this 3D model

This is a spacer to center Printrbot brand spools of plastic for my Simple Metal Spool Holder available here: http://www.thingiverse.com/thing:322923 . Fits these roles of plastic: https://www.amazon.com/s/ref=sr_nr_n_1?rh=n:16310091,p_4:Printrbot,p_89:Printrbot,n:!16310161,n:6066126011,n:6066128011&bbn=6066126011&ie=UTF8&qid=1404111459&rnid=6066126011 . It should also fit any spools with an inside diameter of around 51.75mm. . UPDATED 2014-08-04. I increased the diameter slighter and raised the edges for a VERY snug fit. So snug it may require sanding or pliers to get on. But once on, it WILL NOT FALL OFF! . I also made spacers for BuMat and SainSmart brands of plastic. If you want a customized spacer for your favorite brand, send me the inside diameter of your spool. . Bumat spacer: http://www.thingiverse.com/thing:381557 SainSmart spacer: http://www.thingiverse.com/thing:381558 . Also check out my Simple Metal base: http://www.thingiverse.com/thing:366324