Spool Holder Kit 4500g/4.5kg Spool Wall Mounted v1

I have created a kit of adapters wich combine with bearings, aluminium rod, threaded rod and fusion thread to a Spoll holder which can be screwed to a wall for big 4500g // 4.5kg spools.

This system is the first attempt and by far not the most easy to use, but it is very solid and smooth.

It consists of 4 possible prints. one of which is the adapter from FormFutura 4.5kg Spools to an 8mm threaded rod.

If you want to build it yourself, you need to print the 3 connection pieces two times each. 

you will also need the following hardware:

8x  fusion thread for M5 screws (6 of which i needed to shorten to 2/3rds of their lenght)
6x M8 cylinder head 45mm screws
8x M5 screws and washers fitting for the threaded inserts
1x M8 threaded rod with 4x washers, 1x selflocking nut, 2x normal nuts
2x standard skateboard bearings with a inner diameter of 8mm and a outer diameter of 22mm
4x pieces of aluminium square profile 25mmX25mm with a thickness of 2mm

The aluminium pieces need to have the following lengths:
2x 150mm
2x 209mm 

I printed everything in PLA,tried to use no supports or blocked the supports where screwholes were.
Printing settings i changed:
Wall thickness: 4 (at 0.2mm nozzle)
Infill Pattern: Triangle
Infill density: 11%

FYI: The Bottom and Tip Connection parts have holes for M8 cylinder head screws. that is to reinforce the parts. In these Parts the fusion threads need to be cut to a length of about 6mm. that is easily done with a pair of pliers and a dremel tool and a cutof disk.

If you intend on using a different spool with a different inner diameter, consider printing a similar spool adapter, since especially the bigger spools can screw with your printer when it pulls the filament and the heavy spool starts swinging back and forth. That is due to the off center balance on the axies if there is no adapter. printing an adapter moved the axies to the center of gravitiy of the spool.

Also i recomment to use some mechanical lubricant to reduce friction between washers, nuts, bearings, prints and threaded rod.
 

The following ideas did not make it into the first iteration: 
A cup shaped section for the ball bearings to easily replace the whole spool shaft assembly. 
Better screw holes for the wall mount pieces.

Feel free to remix this project.
Not for commercial use - dont build and sell it. If you use it in your commercial printing farm, feel free :)

I would love to see your ideas and thoughts.

Happy printing

Bodo