Printrbot Simple XL - Spool Expander

thingiverse

The newer XL tower kits rectify this problem, but if you possess an older tower kit with 4 casters, it only really fits the included spool. Rather than rewinding filament or ordering exclusively from brands with exact spool size, simply print 2 of these spool expanders to allow any size spool to rest comfortably on the tower. Printing recommendation - This tall object requires accurate z calibration, as small deviations multiply significantly at 180 layers. Printing takes approximately 1 hour. Use a piece of paper to measure what will fit your tower, and check its alignment as it nears completion. Once aligned correctly, press stop. The design accommodates spools up to 75mm in diameter. Multiple versions are provided - a tight fit requiring minimal filing or sanding, and a loose fit that slides smoothly into place. Your printer's calibration dictates which version is more suitable, with the loose version serving as a recommended choice due to its versatility.