Easy Spool Holder - Spool Safety Lock (Prusa MK2 / MK2S / MK3)

I have been using IsmaelPR1's spool holder (https://www.thingiverse.com/thing:1768975) now for several months and have recently also made a remix of the spool holder which you can find here: https://www.thingiverse.com/thing:2661364

On my Prusa MK2S I use a very handy End-G Code which raises the extruder to the left upper corner after the print has finished. The benefit of this code is that the extruder is always accessible and I can easily change filaments, see if the nozzle is still clean, change the nozzle, preheat without oozing directly on the bed, etc.). The G-Code is as follows:

G1 X0 Y200 Z195; home X axis and push Y forward and x axis up

For filament samples, I have printed some slim and handy filament spools (see here: https://www.thingiverse.com/thing:2091266). The combination of very light filament spools together with the End-G Code results occasionally that the filament spool falls of the Easy Spool Holder at the end of the print (the extruder moves up, pushes up the filament and the spool has not enough mass to stay on the Easy Spool Holder).

Hence I have quickly drafted a "safety lock" which you can run through the spool and then 'click' in the left and right spool holder elements.

I printed this one very fast in ABS and it does the trick till date.

UPDATE 05-12-2017: uploaded a REV1 version with slightly improved fit. This version fits better since now the recess follows the curvature of the Easy Spool Holder

Print instructions

Category: 3D Printer Accessories Print Settings

Printer Brand: Prusa

Printer: i3 MK2S

Rafts: No

Supports: No

Resolution: 0.20

Infill: 50%