Creality Captive Universal Double Spool System V2.0

After moving my printer a few times without removing filament first and having my spool fall off and roll around i decided to go looking for a way to make it captive to the holder unless i want it to come off, I found a model on thingiverse i liked and was happy till i started doing more multicolour prints and was lazily just leaving the second spool lying on the electronics box and then i was back to square one, So off i go to find a way to put a second spool on my printer found a nice one that attaches behind the stock spool holder but i wanted that one to be captive as well, I modified the secondary holder but the model from thingiverse wont fit and cant be easily modifed so off i go again to look for something i can use to make a new one and the Creality Captive Universal Double Spool System was born, Then i realised it would not work with the plastic rotatable spool holders and so i went looking for another model i could use to really make it universal and now we have the Creality Captive Universal Double Spool System V2.0 

No bolts, nuts, washers, threaded rod or bearings needed, just a simple small half round file to clean up the seams and the supports on the holder/s

If your printer uses the 1.5mm thick metal bracket and you have the spool holder with the locking tab nut you can just file down the inside lip of the stock spool holder to allow the Primary Shaft to fit (see pic 3) and you will not need to print the Primary Spool Holder

Items needed for this config:

If your printer uses the 1.5mm thick metal bracket and you have the older spool holder with the threaded nut i am not sure if you will need to file anything to allow the Primary Shaft to fit it for a single spool setup but the stock spool holder will not work for a double spool setup

Items needed for this config:

If your printer uses the plastic bracket with two sets of locking tabs again you can just file down the inside lip of the stock spool holder to allow the Primary Shaft to fit (see pic 3) but you will need to print a Primary Spool Holder if you want a double spool setup

Items needed for this config:

For best results print Nuts, Shafts and Holders separately

Print Settings: 

Standard Cura settings for PLA, 0.6mm/0.4mm nozzle, low quality preset (0.28mm) unless specified

Nuts:

2 walls (0.6mm nozzle) 3 walls (0.4mm nozzle)

0.5mm horizontal hole expansion

2 top and bottom layers

3 initial bottom layers

15% infill

0.2mm skin edge support thickness

does not need supports but it uses a sacrificial bridge to start the threads so bridging must be enabled

Shafts:

2 walls (0.6mm nozzle) 3 walls (0.4mm nozzle)

2 top and bottom layers

3 initial bottom layers

15% infill

0.2mm skin edge support thickness

Holders:

2 walls (0.6mm nozzle) 3 walls (0.4mm nozzle)

3 top and bottom layers

15% infill

0.2mm skin edge support thickness

supports enabled, set to normal and everywhere, only the locking tab areas need them

slicing tolerance set to exclusive