Two supports that allow you to create a shelf specifically for the filament spools. I strongly recommend using PETG or a more resistant material. Do not print with PLA. You need to add:
x2 External Ø20 tube, the inside must be as wide as possible to contain the weight, I recommend a Ø20x19
x4 countersunk wall screws Ø4 or Ø4.5 with relative fisher
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