About this 3D model

This is a parametric horizontal spool roller. I created it to hold a spool of filament above the top frame of my (slightly modified) rostock-mini, but it can be used to hold a spool horizontally above any flat surface. The STL files provided work with spools that have 31mm and 51mm holes (Octave and MakerGear). If your spool(s) have different sized holes, you will need to modify the SCAD file and re-generate the STL files. (You can also make the arms longer or shorter, and make the base/shield a different height). The smaller spool hole size is built into the parts, and the larger hole size is accomodated by an "expansion ring" that is held by the shield piece at the base until it is needed.