CNC Foam Cutting Services
As the UK’s leading foam converter, we use CNC routing to turn a wide range of foam grades into precise, repeatable custom products. Whether you need a single bespoke piece or a production run of matching parts, our team can work from your design or help you develop one from scratch.
- We CNC cut a wide range of foam grades, including HLB, Plastazote, acoustic foam and Class 0 fire-rated foam, at our High Wycombe factory.
- CNC cutting works from a design file (we accept .cad, .dxf and .dwg) or a brief our team can help turn into one.
- It is best suited to businesses, production runs, or a single bespoke piece that needs to be right. For one item for yourself, freehand or DIY cutting is usually the simpler and cheaper route.
- We work to ISO 9001 quality standards and have supplied CNC-cut foam products to clients including Rolls-Royce, Jaguar, Aston Martin, Boeing and the Ministry of Defence.
What Is CNC Foam Cutting?
CNC stands for Computer Numerical Control. A CNC foam cutter is a router guided by a computer, following a digital file to cut foam to an exact, repeatable shape. Compared with freehand cutting, it removes the small variations that come with hand work, so every piece in a batch matches the last.
We use our CNC routers solely for foam. Once a design is finalised, the file is converted into a toolpath the router can follow, and the foam is cut to that path with consistent accuracy across the whole run.
How Accurate Is CNC Foam Cutting?
A well-maintained CNC router can hold dimensional tolerances of roughly ±0.1mm to ±0.5mm, with high-end machines capable of tighter accuracy still. This is why CNC cutting is chosen over freehand work whenever a precise, repeatable shape matters, such as a case insert that needs to hold tools securely or a batch of matching components for a production run.
Denser, more rigid foam grades, such as Class 0 fire-rated foam, HLB and Plastazote, generally hold a tighter, cleaner edge under CNC cutting than softer, low-density foams, which can compress or deform slightly as the cutter passes through. If your project needs fine detail or a close tolerance, a firmer foam grade is usually the better starting point, and our team can advise on the right material for your design.
Materials We CNC Cut
We can CNC cut most of the foam grades we stock. Here are some of the most requested for custom and bespoke work.
| Foam Grade | Key Trait | Typical Use |
|---|---|---|
| HLB (High Load Bearing) | High load bearing capacity | Toolboxes, flight cases, briefcases |
| Plastazote LD33 | Closed cell, water and chemical resistant, 9 colours | Case inserts, tool trays, shadow boards |
| Acoustic Foam (Wedge, Pyramid & More) | NRC 0.85, grey, blue or red | Studios, acoustic panels, tiles |
| Class 0 Fire-Rated Foam | Class 0 fire rating | Construction and shop fitting projects |
| Anti-Static (ESD) Foam | Dissipates electrostatic charge | Electronics packaging and cases |
| Upholstery Foam | Cut to shaped seat and cushion components | Furniture and bar seating projects |
Plastazote alone is available in nine colours, including black, white, blue, green, grey, orange, purple, red and yellow, so a CNC-cut Plastazote piece can often be matched to your existing colour scheme without any special colour matching. See our Plastazote foam page for the full range.
Where CNC Foam Cutting Is Used
We supply CNC-cut foam products to more than 25 different market sectors. Here are some of the applications our customers most often come to us for.
- Automotive and Industrial. Custom cut trays for production lines, seat padding and component protection. We have supplied foam products to automotive clients including Rolls-Royce, Ferrari, Jaguar, Aston Martin, Land Rover and Porsche.
- Aerospace. Precision-cut foam components suitable for both aviation and space flight applications.
- Case Inserts. Bespoke foam inserts that hold tools, equipment or valuable items securely inside a case.
- Museum Exhibitions and Galleries. Custom housing designed to keep precious items and works of art safe.
- Military (MOD). Lightweight products tested and certified to Ministry of Defence specifications.
- Boating and Marine. Precision-cut foam components suitable for use on the water.
- Display and Presentation Boxes. Custom cut inserts that give products a premium appearance.
- Technical Applications. Specialised foam products made through advanced fabrication for projects that do not fit a standard template.
CNC Cutting vs Die-Cutting and Freehand
CNC routing is best suited to businesses, production runs, or a single bespoke piece that has to be exact, such as a case insert for something valuable or an intricate, irregular shape. If you just need one tray or piece for your own use at home, freehand or DIY cutting is usually the simpler and more cost-effective option. For a full breakdown of CNC versus die-cutting, including which is more cost-effective at different order quantities, see our custom foam inserts page.
Working With Your Design
If you already have a design file, we accept .cad, .dxf and .dwg formats. Send it over and our team will confirm it is suitable for use. If you are not sure whether your file will work, or you do not have one yet, get in touch and we will talk through your requirements and help you get to a workable design.
How to Get a Custom CNC Foam Product
Send us your brief or design file. Call, email or fill out our contact form with what you need, including sizes, quantities and your accepted file if you have one.
We advise on material and design. Our team will help you choose the right foam grade and confirm your file is ready for production, or help you develop one.
Your foam is CNC cut and checked. Production runs to ISO 9001 quality standards at our High Wycombe factory.
Your order is delivered. Get in touch for a lead time based on your specification and quantity.
Speak to a Foam Expert Today
We have been converting foam in the UK since 1976 and work to ISO 9001 quality standards at our High Wycombe factory. Our foam also comes with a 5 year guarantee against faults in manufacture. If you have a custom foam product in mind, call us on 01494 441177, email sales@gbfoam.com or fill out our contact form.
Frequently Asked Questions
What is CNC foam cutting?
CNC foam cutting uses a computer-guided router to cut foam to an exact, repeatable shape from a digital design file. It gives more consistent results than freehand cutting, especially across a batch of matching pieces.
What foam materials can you CNC cut?
We can CNC cut most of the foam grades we stock, including HLB, Plastazote, acoustic foam, Class 0 fire-rated foam, anti-static foam and, for certain shaped components, upholstery foam. Speak to our team if you are not sure which grade suits your project.
What file types do you accept?
We accept .cad, .dxf and .dwg design files. If you are not sure whether your file is suitable, send it to us and we will confirm before you order.
Is CNC foam cutting suitable for a one-off personal item?
It can be, but CNC cutting is generally better suited to businesses, production runs, or a single bespoke piece that needs to be exact. If you just need one tray or piece for your own use, freehand or DIY cutting is usually the simpler and cheaper option.
What industries use your CNC foam cutting service?
We supply CNC-cut foam products to more than 25 different market sectors, including automotive, case inserts, museum exhibitions, military and technical applications. We have supplied foam products to clients including Rolls-Royce, Jaguar, Aston Martin, Boeing and the Ministry of Defence.
How long does a custom CNC foam order take?
Lead times depend on your specification and quantity. Get in touch with your requirements and our team will confirm a timescale.
Cameron has emerged as a key marketing expert since joining GB Foam Ltd in 2017. A graduate of the University of Winchester, with a professional background in Public Relations; he has combined his content writing and brand awareness expertise with an in-depth knowledge of foam products and foam conversion technology to enhance the company’s marketing strategies and industry presence. Cameron has led numerous marketing campaigns, in both B2B and B2C segments, to further brand recognition and open up new business avenues worldwide.