Modular Filament Spool Holder V2

🧱 Modular Filament Spool Holder V2

– expandable, compact & beginner-friendly –

(the shelf can also be printed on smaller printers, you would just have to split the parts onto extra plates)

🔹 Short Description

Modular filament shelf for 4 or 8 spools, ideal for small workspaces

Expandable rod system, no bearings, no special parts – simply print & assemble

Beginner-friendly print profiles included

🎯 Project Goal (slightly adjusted)

This project was developed with a focus on wall mounting, space saving, and stability

It is suitable for both beginners looking for a functional complete system and advanced users who want to expand or adapt the design

📖 Description

This filament shelf was specially developed for limited space and offers a stable, simple, and modular solution for storing filament spools

The shelf can be used in two variants

• Standard version: Space for 4 filament spools
• Extended version: Space for 8 filament spools with extension rods

The system is deliberately kept simple

• The rods are mechanically fixed with M3 screws but do not bear any load
• The entire weight of the spools rests on the side holders
• No ball bearings, no inserts, no post-processing required

The project is structured to be beginner-friendly

• logically divided print plates
• ready-to-use print profile included
• sensible standard settings (brim, seam position, etc)

Advanced users can, of course, adjust or optimize all settings in the slicer

🧩 Required Parts

🔹 Printed Parts

Standard Shelf (4 Spools)

• 2× Holders (left & right)
• 2× Standard Rods

Extension to 8 Spools

• 2× Extension Rods
• 1× Connector

👉 Note:

When using the extension, the rods on the holder print plates are not needed

Only the parts from the extension print plate are used

🔩 Required Screws (Hardware)

• 4× M3x15 countersunk screws
• no threaded inserts
• no tap required

🖨️ Recommended Print Settings

• Material: PLA / PLA Matte / PETG
• Layer height: 0.2 mm
• Profile: 0.20 mm Balanced Strength
• Infill: 20% Gyroid
• brim: 5 mm outer (activated)
• Seam position: Rear

Orientation:

• All rods are printed so that the screw holes lie on the print bed

  → visible surfaces remain clean

⏱️ Total print time (all 3 print plates): approx. 24 hours

(depending on printer & material)

🛠️ Assembly Instructions (short & simple)

1. Insert rods into the holders
2. Screw in M3 screws from below (only fix, do not overtighten)

3. For extension:

    

   • Insert connector
   • Slide on extension rods

    

4. Place filament spools – done 😌

⚠️ Notes

• The shelf is intended for wall mounting
• Maximum load: 8 filament spools (~8 kg)
• For larger spans or more weight, it is recommended to use multiple shelves

🔩 Wall Mounting (NEW)

Recommended Screws

• Wooden walls / Wood panels:

   

  • 3.5 × 25 mm wood screws

   

• Concrete / Stone walls:

   

  • 3.5 × 35 mm screws
  • suitable anchors (e.g. 6 mm)

   

👉 The screw heads neatly disappear into the designated countersinks of the holders