Top Spool Holder

NOTE: If you like this thing check out my other complementary thing:

https://www.thingiverse.com/thing:2818006 (narrow version)
https://www.thingiverse.com/thing:2850749 (revised quick change)
http://www.thingiverse.com/thing:2067525 (quick change)


UPDATE 1/13/17: I have included 2 types of cross beams based upon some feedback that I've received. This is specifically to offer more stability to Version 2, now called Version 2.1. Please see the picture and STLs for specifics. I personally use 4 nuts and have no stability issues but I'm currently using version 1.

Update 4/7/17: I have split version 2 of the spool holder into 3 different parts as requested by WayneNero.

I wanted something easy to insert and remove my spool. Although I've been using the spool holder that came with my Anet printer up to this point, at times I've debated going to a top mounted spooler so that I can free up some space on my work table and ensure the filament feeds with little resistan