Here you go!
Print everything from here:
except the attachments to the MK3 frame.
Replace them by the version as found in the attached .zip file.
See the photos attached.
I basically combined the - better - snap on mechanic of https://www.thingiverse.com/make:494591
with the https://www.thingiverse.com/thing:2809118
. And repositioned where the spool is in order to have the filament always in front of the frame.
(If you are a perfectionist: You might notice that the "ball bearing circle cutout / the large empty circle" from my addon does not exactly match with the one of https://www.thingiverse.com/thing:2809118
. It looks a bit odd if you notice it
. I missed during design that the circle is not in line by some mm with the other circles. DAMN! However can't fix this now. And since it works not that much desire to rework it
If you fix it, the construction data is here: https://cad.onshape.com/documents/d9bf0 ... d9e257bcb7
Regarding printout, I did use the following settings in Prusa Control:
0.2mm layer height (FAST)
30% infill (DENSE)
Support None, Brim Off.
Took about 2hours to print in silent mode.
About 6m of filament according to the software.
Keep in mind too that the general https://www.thingiverse.com/thing:2809118
is made from tight fit parts. You might need a file to get the parts together.