🎛️ CFS Filament Spool Retainer – Modular System (Front & Rear Shaft Compatible)

This modular filament spool retainer for the Creality CFS system allows flexible configuration using original or printable spool shafts.

🧩 Components

- 1x Base body

- 1x Retainer cover

- 1x Small rocker arm (rear shaft)

- 1x Large rocker arm (front shaft)

- 1x Small printable shaft

- 2x Printable front shaft versions

Each rocker arm includes a hook for rubber band or tension spring installation.

Required hardware:

- 2x M3 countersunk screws (6–10 mm)

🔄 Compatibility

Original CFS parts:

- Rear spool shaft – Part No. 4004150040

- Front spool shaft – Part No. 4004150039

Possible configurations:

- 2x rear shafts

- 2x front shafts

- Mixed configuration (recommended)

💰 Cost-Saving Option

Printable shaft versions are included.
You only need matching ball bearings.

⚙ Required Bearings

Small shaft / rear shaft:
MR94ZZ – 4x9x4 mm

Front shaft:
688ZZ – 8x16x5 mm

Bonus front shaft version:
5x16x5 mm bearing

🧱 Material

Prototype: PLA

Recommended: PETG

⚙ Print Settings (Creality K2 Plus – Quality / Strength) 6 Wall

Layer height: 0.2 mm

First layer: 0.25 mm

Scarf seam: Contour

Wall order: Inner – Outer – Inner

Top layers: 5

Bottom layers: 5

Infill: 30%

Supports: Tree (Automatic)

Placement: Build plate only

CFS Filament Spool Retainer – Modular System

0.2mm layer, 6 walls, 30% infill

0.2mm layer, 2 walls, 15% infill