22mm bearing spool holder conversion

Edit 02/08/2017: after a while using this design, I'd recommend using something to make resistance. While this works really well for spools that are a little used, on new spools it tends to unravel a little. Basically it works too well.

Wanhao Duplicator i3 plus bearing spool holder conversion. Allows for the spools to be held in place and use bearing to unspool the plastic

The cone may have to be modified to fit some spools as they go on both sides of the spool (they may collide if spool is not wide enough), they work fine with the ones I have. I'm waiting for the 8mm rod to come in from McMaster. Ended up using 5/16th threaded rod from Home depot i had laying around.

This requires having two sets of brackets that come with the Wanhao Duplicator i3 plus, or printing your own.

I designed this to fit 22mm miniature bearings, https://www.amazon.com/gp/product/B002BBICBK/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1 to be exact.

The rod is from McMastercarr it is a simple