Already on ArticleSlash?

Forgot your password? Sign Up

Important information about CNC Hot Wire Foam Cutting Machines

 


Visitors: 1,360
 2 votes

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

  1. EPS – expanded polystyrene
  2. XPS – extruded polystyrene
  3. 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?

  1. The software is divided into two sections – design software to design the shapes to be cut, and the cutting software that controls the machine
  2. The hot wire tensioning mechanism
  3. Effective cutting sizes for the horizontal, vertical and the wire length
  4. 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:

  1. Multiple wires – from 3 to 8 wires will increase the cutting capacity from 2 to 7 times
  2. 8 foot effective wire length – don’t settle for a 4’ machine
  3. If primary use of the machine is to cut logos and signs – a smaller machine will do the job
  4. Cutting speed – mostly material dependent – as a rule of thumb: the higher the foam density – the slower the cutting speed

Foam cutting machines have many applications. They can be used to cut architectural shapes, for packaging, building, construction, hobbies, RC Planes, sculptures, monuments, theme parks, props, aeronautics, aerospace and much more.

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:

  1. Preparing the foam for coating – a primer should be used to prevent the coating material to penetrate the EPS beads
  2. 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.

Cutting EPS Foam:


Expanded polystyrene is very easily cut with a hot-wire foam cutter, which is easily made
by a heated and taut length of wire, usually nichrome due to nichrome's resistance to
oxidation at high temperatures and its suitable electrical conductivity. The hot wire
foam cutter works by heating the wire to the point where it can vaporize foam immediately
adjacent to it. The foam gets vaporized before actually touching the heated wire,
which yields exceptionally smooth cuts.
Polystyrene, shaped and cut with hot wire foam cutters, is used in architecture models,
actual signage, amusement parks, movie sets, airplane construction, and much more.
Such cutters may cost just a few dollars (for a completely manual cutter) to tens of
thousands of dollars for large CNC machines that can be used in high-volume industrial production.
Polystyrene can also be cut with a traditional cutter. In order to do this without ruining
the sides of the blade one must first dip the blade in water and cut with the blade at
an angle of about 30º. The procedure has to be repeated multiple times for best results.
Polystyrene can also be cut on 3 and 5-axis CNC routers, enabling large-scale
prototyping and model-making. Special polystyrene cutters are available that
look more like large cylindrical rasps

(708)

Article Source:


 
Rate this Article: 
 
Surgical Suction Machines – The Life Saving Machines
Rated 3.5 / 5
based on 2 votes
ArticleSlash

Related Articles:

Foam Cutting Instructions For Custom Cases

by: Rob Rich (July 06, 2008) 
(Computers and Technology/Hardware)

Plasma, Oxyfuel and Waterjet Cutting Machines

by: Daniel Oztunc (November 22, 2011) 
(Business/Industrial Mechanical)

Glass and Key Cutting Service Information and Facts

by: Jerome Green (May 06, 2011) 
(Business/Industrial Mechanical)

Memory Foam Topper - The Important Decision Between Quality and Cost When ..

by: Jason Chisolm (October 02, 2008) 
(Shopping and Product Reviews)

Essential Information on Used Screw Machines

by: Andy West (October 20, 2008) 
(Home and Family/Crafts Hobbies)

3 Important Features for Serger Machines

by: Mario Leal (February 09, 2012) 
(Home and Family/Crafts Hobbies)

Important Considerations For Restaurant Coffee Machines

by: Dean Forster (April 18, 2007) 
(Food and Drink)

Basic Difference Between Memory Foam Mattresses and Latex Foam Mattresses

by: Dave H Clark (October 08, 2008) 
(Home Improvement/Furniture)

BiPAPA Machines and CPAP Machines - Find Which One is More Comfortable

by: Rashmi Saxena (March 10, 2008) 
(Health and Fitness/Sleep Snoring)

Surgical Suction Machines – The Life Saving Machines

by: Shalu Vohra (September 27, 2011) 
(Relationships/Dating)