Cutting Drone Wings and Aerofoils with CNC Hot Wire
EPS and EPP are the classic materials for wings and drone bodies. CNC hot wire cutting produces aerodynamic profiles more precisely than any other process.
Why Hot Wire Is Ideal for Wings
Wings made from EPS and EPP have one thing in common: they are tapered. Leading and trailing edges have different profiles, width varies along the span. This is exactly the strength of 4-axis hot wire cutting - left and right sides of the wire move independently and produce the desired aerodynamic contour in a single cut.
4-Axis Cutting - the Basis for Wings
A wing has a thicker profile at the root than at the tip. Leading and trailing edges are not parallel. This geometry is classic for 4-axis cutting: the left side of the wire follows the root profile, the right side the tip profile - in a single cut the complete aerodynamic contour is created. No routing, no reworking, no material removal.
EPS or EPP - Which Is Better for Wings?
- EPS - light, cheap, precisely cuttable - ideal for gliders, scale models, industrial drones
- EPP - elastic, impact-resistant, springs back - ideal for FPV racers and training aircraft
- EPP is cuttable similarly to EPS - a slightly slower speed is recommended
- Both materials are available in various densities - density affects weight and strength
- For industrial drones: EPS with a high density for stability
Applications in the Drone Industry
The CNC hot wire is used in the drone industry and in model making for a wide range of parts: wings with aerodynamic profiles, fuselages and nacelles as bodies of revolution (with a rotary table), flying-wing wings as tapered 4-axis cuts, aerodynamic fairings, gliders and powered gliders in EPS, FPV racer frames in EPP. Film studios and aerospace companies use the CUT3000S to produce aerodynamic EPS components.
For wings up to a 2500 mm span, the CUT2500S is the right choice. For larger spans and industrial production, the CUT3000S. For wings with strong twist - a strong profile change between root and tip - we recommend the automatic wire tensioner. It prevents wire breakage at extreme angle differences.
Frequently Asked Questions
The key questions and answers on this topic.
Can I cut wings with the hot wire?
Yes. The 4-axis hot wire cut is ideal for wings - the left and right sides move independently and create the aerodynamic contour in a single cut.
EPS or EPP for drones?
EPS for light gliders, scale models and industrial drones. EPP for FPV racers and impact-resistant applications - elastic and springs back.
Do I need a wire tensioner for wings?
For wings with strong twist - a large profile change between root and tip - we recommend the automatic wire tensioner. It prevents wire breakage at extreme angle differences.
Producing Wings and Drone Parts?
We advise on the right machine and settings for aerodynamic EPS and EPP components.
Related Knowledge
Related articles from our practical knowledge on this topic.
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