Prusa I3 Filament Holder

I DO NOT OWN THIS DESIGN (ORIGINAL OWNER)

https://www.myminifactory.com/object/3d-print-improved-spool-holder-for-the-original-prusa-i3-mk2-42454

I have designed a better spool holder for my Original Prusa i3 MK2 that can fit any spools of the filament and that makes the process of changing spools very easy! It is very strong and it can hold practically every spool holder. I've done a lot of stress analysis with this design and with a spool of 2 Kg (twice the normal one) it has a safety fa