About this 3D model

This is a remix that fits my particular filament spools better (from MakerFarm.com). I have printed and am using the 3mm version. I don't have any 1.75mm filament, but I made a 1.75mm version; I believe I scaled down the retaining slot appropriately to work with 1.75 filament. The original worked best when put on the ridge of the spool side (see photo of white clip); otherwise it didn't put enough pressure on the filament. This version has a longer outside arm with a larger bend; it slips over the first ridge on the spool. It's also slightly wider to accommodate my slightly thicker spool side.