Filament Spool Shelf Bracket

thingiverse

Shelf bracket to hold 200mm filament spools securely in place requires one piece of 42mm x 16mm wood and two pieces of 20mm rod. Most designs I considered didn't incorporate a backing board, but this one stood out for its clever use of a mounting system. **Choosing the Right Sizes** I selected these sizes because the wood is a common dimension in Australia for skirting boards and I had some spare 20mm tube from old curtain rods that I could repurpose. **Why Use a Backing Board?** Using wood as both a backing board and support was essential for two key reasons. First, the irregular supports behind my plasterboard walls made it crucial to avoid relying on them for shelf stability. Second, a backing board provides a barrier between the spools and the wall, preventing unsightly marks. **Printing Details** I printed this design with a 0.24mm layer height, using four walls and four layers on top and bottom for added strength. To minimize print time, I opted for only five percent infill, as the thick walls provide most of the structural integrity.