Dual spool holder

I created this model primarily for my older 3D printers because I frequently needed to change filament colors. To enable quick changes, I explored existing solutions but eventually decided to design my own after testing several options. This holder has been tested on the Ender 3 V2, Creality CP01, Ender S1+, and Prusa MK3S+. After creating multiple versions and conducting thorough tests, I can confidently say that this final design works exceptionally well with most spool types. Thanks to its adaptability, it is compatible with all the spool designs I have used over time. Key feature:Push-fit assembly; no glue required.Requires the following components:4x 608ZZ bearings (printed bearings can also be used; included in the 3MF file).T-nut M4.Screws: DIN 912 M4x12 (2x) and DIN 7380 M5x25 (1x). Assembly instructions:Refer to the manual guide provided at the end of this text. A gap is designed between the arm and spool roller to accommodate washers, allowing you to adjust preload according