Universal Bearing Filament Spool holder

Its my take on the spoolholder design. I added the Fusion File to the download tab.

I designed two different mounting configurations. 

Drybox:

non printed hardware:

2x 608zz skateboard bearings

1x M8 rod 

2x M8 nylon locknuts

2x M8 nuts

3xM8 washers 

4x M3 bolts and nuts (for mounting to drybox)

8x M3 washers

Printed parts:

rewind knob,front/back plate, roller, slider, locking nut

Assembly:

Screw a nylon Locknut with a washer onto one end of the M8 rod. Insert the M8 nut into the roller. Screw the roller onto the threaded rod (nylon locknut→washer→roller→M8 nut).

Drill the mounting holes and hole for the M8 Rod in the drybox and mount the front and backplate. 

Press fit the bearings in the front/backplate. Insert the roller assembly on the back plateand add a washer. then insert a M8 nut in the rewind knob and screw it onto the threaded rod. Lock everything in place with a nylon lock nut.

Creality Ender Spoolholder mount:

Non printed hardware: 

2x M8 nylon locknuts

2x M8 washers

1x M8 nut 

2x 608zz skateboard bearings

Printed Parts

Bajonett attachment, locking ring, roller, slider, locking nut

Assembly:

Screw a nylon Locknut with a washer onto one end of the M8 rod. Insert the M8 nut into the roller. Screw the roller onto the threaded rod (nylon locknut→washer→roller→M8 nut)

Press fit the bearings into their seats in the Bajonette attachment. Mount the bajonette attachment to the stock ender spoolholder bracket. Lock it with the lock ring.

Insert the roller Assembly into the bearings and lock it from the other side with a locknut and washer.

Printing:

Everything printed with 3 wall lines with a 0.4mm nozzle and .2mm layerheight 4top/bottom and 20% cubic infill.

If you plan to use it in an enclosure I recommend to printing it in ABS.

I printed everything without support except the bajonette attachment which was printed with normal support and everywhere, but the supports where pretty hard to remove. You might be able to print it without supports but i wanted to make sure it printed fine.

For the mounting plates as well as the Ender bajonette attachement i used an zylinder to change the bearing seats to 100% infill.

Like this:

I changed the bearing configuration and added a slot and a locking nut to the design inspirired by this video: