1.75/6 mm Contractible spool for filament coils

thingiverse

Thank you Heinz Spiess for kindly sharing your design with me. I appreciate the concept and design of the original, yet it doesn't fit my specific needs. My adapted version shares most of its qualities but with two significant adjustments: Firstly, I have enlarged the central hole within the hub from 6mm in diameter, while retaining its external radius intact. Secondly, the previously mentioned filament fix holes were narrowed to 2mm for improved compatibility with 1.75mm filaments; meanwhile, the existing mounting holes continue to measure 3mm in size. My modifications have been made minimally within the .scad file, and I've thoroughly documented these adjustments in the accompanying comments for clarity.