Wall mounted spools

thingiverse

This thing is primarily designed as a bracket for suspending filament from a board attached to a wall. The board itself measures 1x3 standard size (0.75" x 2.5") with a 45-degree angle cut along its length, and I deliberately left a 4mm flat spot at the tip to ensure proper fitment. The bracket's dimensions are based on this flat spot; if you choose to cut it to a point instead, it should still function flawlessly. For clarity and convenience, I've included model files of the board, with the intention that they not be printed themselves. The brackets remain rigid thanks to 5/16th dowels, while another 5/16th dowel securely holds the spool in place within the hook. The hook's dimensions are such that the dowel should easily slide in and out, and the holes surrounding the dowels should provide a snug fit. Additionally, I've included a spool center buffer for further customization. Simply open the freecad file, edit the sketch, modify the radius or diameter to match your spool's inner dimensions, and export it as an stl file. I'm concerned that the hanging dowel may shift and slip out of place due to its rotational motion. To mitigate this risk, I've incorporated a center fitting designed to keep the dowel tightly in place within the spool. In cases where the fit is not snug enough, a piece of paper can be used as a shim to secure it further. Furthermore, I plan to experiment with disc guides fitted closely around the dowel just inside the hooks for added stability. If you need to adjust the dimensions of the bracket – perhaps due to a larger or smaller spool size – be aware that modifying the bezier curves might prove challenging. However, feel free to attempt it if necessary. To clarify, I've attached an arc centered at the tangent on the bottom of the top hook and extending down to the board's corner (a point within the sketch), with the curve tangential to the bottom loop. This constraint helps to define the opening for the wooden piece; however, you'll need to delete the arc to enable proper extrusion. In my printing endeavors, I've found that using 20% infill, a 0.4 nozzle size, two walls, and three top/bottom layers yields a sturdy enough result.