Information you need to know regarding cnc hot wire foam cutting machines
What is a hot wire cnc foam cutter used for?
Hot wire foam cutters will cut different types of foam, from insulation to fabrication, from logos, surfboards and signs to crown moldings and concrete molds
Hot wire foam cutters are designed to cut different types of foam
- EPS – expanded polystyrene
- XPS – extruded polystyrene
- EPP – expanded polypropylene
Not to be used for cutting polyurethane – will result in toxic fumes
What are the main components that a foam cutter is made of?
- The software is divided into two sections – design software to design the shapes to be cut, and the cutting software that controls the machine
- The hot wire tensioning mechanism
- Effective cutting sizes for the horizontal, vertical and the wire length
- Number of axis – a 4 axis machine will be able to cut tapered shapes (like a cone or a jet wing)
Here are some features to look for in a hot wire foam cutting machine:
For production of crown molding:
- Multiple wires – from 3 to 8 wires will increase the cutting capacity from 2 to 7 times
- 8 foot effective wire length – don’t settle for a 4’ machine
- If primary use of the machine is to cut logos and signs – a smaller machine will do the job
- Cutting speed – mostly material dependent – as a rule of thumb: the higher the foam density – the slower the cutting speed
Hot Wire CNC Foam Cutter prices:
CNC foam cutters will range from $1500 to $50,000. The price is a factor of the machine size, the number of wires, the way the wires are kept under tension.
Other foam cutting machines:
Another way to cut foam is with a CNC router – this is mainly for machining the foam and not for cutting.
CNC routers for foam are mostly used for 3D shapes seen in Las Vegas, theme parts and even signs
Foam coating: EPS and XPS will melt if painted with oil-based paint. Painting is composed of two steps:
- Preparing the foam for coating – a primer should be used to prevent the coating material to penetrate the EPS beads
- Coating – Coating is usually Epoxy (usually brushed) or Polyurethane (brushed or sprayed)
Once the foam is coated – it can be painted with any type of paint.
If interested, you can even Build Your own cnc hot wire foam cutter. Just visit www.8linx.com and www.foamlinx.com to learn step by step how to build a cost effective machine and the types of foam cutters you might need.
About the Author
Tal Barnea, owner of foamlinx and WeCutFoam is an electrical engineer. He has over 20 years of experience with Hardware, software, mechanics and motion control. Foamlinx is a family owned and operated business designing, manufacturing and distributing cnc hot wire foam cutters and giving foam cutting services.
Pucca BOLD Nail Art DESIGN USING GLITTER HEART CONFETTI AND FOAM BEADS
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