Wool felt
Frequently asked questions
Can Wool felt be laser cut?
Yes: Wool felt can be laser cut. Adequate extraction/ventilation is required.
Can Wool felt be CNC machined?
No: Wool felt is not suitable for CNC milling.
Is Wool felt food safe?
No, Wool felt is not considered food safe.
Physical properties
| Density | 200.0–300.0 kg/m³ |
|---|---|
| Moisture absorption | High |
Laser processing
Releases intense fumes from the combustion of wool keratin. The odor is pungent and persistent, similar to burnt hair. Not toxic, but requires efficient forced extraction to prevent stagnation in the room.
CO₂: Excellent CO2 laser cutting. The beam cuts extremely cleanly and without fraying thanks to the cohesion of pure wool pressed fibers. Edges are sealed and slightly browned. Requires medium power (20–30 W) and constant air assist.
Diode: Excellent on colored or dark felt. On white or very light gray felt requires slow feed rates at high power.
Fiber: Not applicable.
CNC / milling processing
Not machinable with CNC using conventional rotating bits: the soft fabric would tangle around the tool, tearing the elastic felt fibers.
Plotter and thermoforming
Excellent workability. Cuts perfectly with a plotter (up to 3 mm thickness) using rotary blades or deep blades paired with high-grip mats.
Post-processing
Sanding: Not sandable.
Gluing: Perfectly bondable with hot glue, contact adhesives (neoprene) or specific adhesives for felted fabrics.
Over time: Biodegradable natural fiber. If exposed to high humidity, it may suffer attacks from mold or moths. Maintains elasticity unchanged over time.
Common defects
- Strong, persistent burnt smell on laser-cut edges (disappears by airing pieces outdoors for 24–48 hours)
- Shrinkage and stiffening of the felt if washed in hot water
Safety
Pure wool felt is naturally self-extinguishing. Exercise great care with synthetic felt (acrylic or polyester) which tends to melt and rapidly propagate the flame under laser.
Availability and formats
Commercial formats: sheets 1–5mm, continuous rolls
Related materials
Sources
- ISO 9092 — Textiles — Nonwovens specifications
- Guide operative FabLab per taglio laser dei feltri
Information on compatibility, processing parameters and safety is purely indicative. MakerSpecs accepts no liability for damage to persons or property arising from the use of this data. Always check the safety rules and the manufacturer's official manuals before carrying out any processing.