This model is a filament spool adapter intended for use with automatic filament feeding systems such as the Creality CFS.

Dimensions

* Side plate outer diameter: 201 mm

* Center screw bar diameter: 40 mm

Supported Spool Specifications

* Inner hub diameter: 40 mm and larger

* Spool width range: 24 mm to 80 mm

Structural Features

* Two side plates connected by a threaded center assembly

* Male and female threads provide adjustable clamping

* Sloped center geometry on the inner faces provides an auto-centering mechanism during assembly

* Designed to fit inside the spool hub and clamp against the spool walls

* Center coupler (small part) is only required when the filament spool width is smaller than 43 mm

Intended Use

* Adapts non-standard or small filament spools to the standard 1 kg spool form factor required by CFS

* Provides structural support for cardboard filament spools during use in automated feeding systems

🔄 V2 Update

V2 improves ease of use while remaining fully compatible with V1 parts.

What’s new

* Chamfered male & female threads for easier starting and smoother assembly

* Grip holes on both sides for easier handling

Support-free printing — the male end hole includes a 45° internal chamfer

Compatibility

* V2 left/right reels are fully compatible with V1

* New reels can be mixed with:

* existing V1 reels

* the original middle gap adapter

* No need to reprint all parts — upgrading one side works fine

🔄 V2.5 Update – Filament Refill Support (1/16/2026)

* Added thin left & right side plates for filament refill spools

* Supports center hole diameters from 75 mm to 95 mm

* Fully compatible with existing V1 / V2 parts (mix & match supported)

🔄 V3 Update – Thicker Plate Option

What’s new

* Added an optional 2.5 mm side plate thickness (previously 2.0 mm)

* ~2× stiffer than the 2.0 mm version: (2.5/2.0)^3≈1.95

Compatibility

* Fully compatible with existing 2.0 mm plates

* Different plate thicknesses can be mixed and matched

Important note

* Total spool width increases by +1 mm (0.5 mm per side)

* May cause clearance issues if you are already near the CFS width limit

Why this exists

* Added in response to user requests

Filament Spool Adapter (CFS Compatible) V2.5