Spool cradle 50-56 mm, extrusion slot – 4 sizes, no supports

## What it is A cradle that carries a filament spool on its hub instead of on a rod, so the spool turns with almost no drag. Where it earns its place: next to the printer, on a shelf above the printer, dry box. ## Dimensions (measured on the CAD solid) | hub diameter | Size (mm) | Volume (cm³) | |---|---|---| | 50 | 77 × 28 × 34 | 27.1 | | 52 | 79.2 × 28 × 34.6 | 28 | | 54 | 81.4 × 28 × 35.7 | 29 | | 56 | 83.6 × 28 × 36.8 | 30.1 | ## Why this one Four hub diameters from 50 to 56 mm, which is th…

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