Universal Filament Spool Adapter/Reducer

This parametric 3D-printable adapter allows you to customise spool hole reductions to fit your exact needs. The default configuration reduces 63mm spool holes to fit 55mm holders, but all dimensions can be easily modified in the OpenSCAD file. The flexible design compresses slightly during installation for a secure friction fit that won't slip during printing.Key Features Fully Parametric: Easily customise all dimensions for any spool/holder combinationDefault Size: 63mm to 55mm reduction (most common configuration)Flexible Design: Configurable expansion slots allow compression for easy installationSecure Grip: Adjustable wavy grip ribs provide excellent retention without damaging spoolsNo Supports Needed: Optimized geometry prints cleanly without support materialOptional Bottom Flange: Toggle on/off to prevent spool from sliding off the holderHigh Resolution: Smooth tessellation for professional appearance Customisable ParametersOuter diameter (spool hole size)Inner diameter (hold