Truss-like Spool Rack

IMPORTANT:For STL user, follow step 1,2,3. For 3MF user, do step 3:In your slicer, please “Split" "to Parts” each object;Then "Change type" of the cylinders to “Negative Volume.” as holes;Adjust the hole size to match the diameter of your rod.Description:This spool rack is designed to be as flexible as possible. It uses a truss-like structure with horizontal, vertical, and diagonal members. All members are separate parts, allowing you to assemble the rack according to your own preferences. The rack is compatible with rods ranging from 12 mm to 30 mm in diameter. Please measure your rod carefully and make the hole diameter 0.3–0.6 mm larger than the rod diameter for proper fit. A test file is included so you can verify the fit and save time and filament. Recommended materials: PLA or PETG Recommended Print settings:Perimeters: 3+Top & bottom layers: 4+Infill: 15%+ (honeycomb or similar)