Rostock Max V2 Spool Holder

Inspired by Fazerboy's model, I thought this looked like a great spool holder for my Rostock Max V2. It is not as sophisticated as RMLynch's design (http://www.thingiverse.com/thing:1060029) But easier to get spools on so I thought it would be a nice compromise.

The hardware i used consisted of stuff I had lying around.

For the bearings I used a Gear head bearing 9.5x22.2x7.14mm. (Available on eBay: http://www.ebay.com/itm/NEW-STIHL-Trimmer-Gearhead-Ball-Bearing-FS-44-74-80-85-/350330092447?hash=item51914cfb9f:m:m3NkvbAKn0UHqUhzku2ysrw)

For the shaft I used a 3/8 inch rod. It has a nominal diameter of 9.47mm Make sure the bearings fit before committing. I found some inconsistency in different 3/8 inch rods. You can also use 3/8 pipe, etc. The rod will have a nominal length of 15cm. This depends a bit on the quality of the print and if you can get the rod to its full depth. Some trial and error may apply.

To connect the end cap I used two #4x1/2 pan head sheet me