RX-80 Shaped Hot Knives &  Hot Knives for Cutting Ribbon

These models are designed for cutting shaped ends into ribbon, webbing, slings, hook & loop, and other synthetics fabrics and materials. Shaped hot knives will cut and seal the ends into Standard or Custom shapes. Six standard knife shape types include: half round, V-shaped, bullet-nose, beveled, rounded corner, and tactical. Custom shapes can also be made to your specifications and are about 10% to 15% more expensive. All our knives are manufactured from either highly conductive brass alloy, or long-lasting stainless steel.
 

Download Shaped Hot Knife brochure.

Download Hot Knives for Ribbon Cutting brochure.

webbing shaped end, shaped end cutter, webbing sealing machine
Standard Knife Shape Product Codes

 

Standard knife shapes are those which are most common and are less expensive to reproduce. We have designated six of the most common shapes with the following Knife Shape Product Codes:

Standard Knife Shapes (click images for specifications)

  • -BN_      Bulletnose, available for webbing in 1", 2" and 3" widths

  • -BV_      Beveled point, available in several widths and corner angles

  • -RB_      Half-round, or 'radius' end; available for most webbing widths

  • -RC_     Rounded corners, usually found on seatbelt and restraint systems

  • -TC_      Tactical and duty belt, incorporating an angled end

  • -V_ _      "V" shaped knives in single & double with different inside angles

  Custom Knives

  • -B33     Brass interchangeable and one-piece knives up to 3" wide

  • -S33     Stainless interchangeable knives up to 3" wide ​

  • -B44     Brass interchangeable and one-piece knives up to 4" wide

  • -S44     Stainless interchangeable knives up to 4" wide

Bullet-nose knife shape from NOVA TECH
Rounded end hot knife shapes from NOVA TECH
Beveled shape hot knives from NOVA TECH
RX-80-BN2 "Bulletnose" shaped hot knife

 

The BN2 is commonly used to cut shaped ends for belts used in safety harness and fall protection webbing. The BN2 will cut webbing up to 2.5" (64mm) wide with a rounded point and beveled sides as shown. 

Hot Knives for Bowmakers

RX-80-V2S & RX-80-V7S

 

The V2S and V7S are our most popular hot knife shapes. They is designed for cutting a "V" shaped end into ribbon for Cheer Bows and awards. Both knives are made from stainless steel and can cut materials up to 3" (76mm) wide. The V2S knife has a 90° inside angle and the V7S knife has a 100° inside angle. Other V knife shapes are also available.

Engraved baseplates are NOW STANDARD on all V knives for ribbon (see below)

Click here for a chart of standard stainless-steel "V" knives available. 



The RX-80-V2S Single "V" Hot Knife 
Cutting 1" ribbon

NEW!

All single "V" knives now include an engraved baseplate for common ribbon sizes as well as improved material guides.

Model RX-80-V2S-RK

Manual hot knife with 3" / 80mm single V

Ideal for Cheer Bows and Ribbon Awards



RX-80-S33, -S44

RX-80-S33 is fitted with an interchangeable stainless steel knife custom made to your specifications. S33 knife working area is 2" x 3" (50x76mm); S44 knife size is 3" x 4" (76x100mm) Specification drawings and samples required, normal delivery is 2 - 3 weeks for custom knives. Larger shaped knives are also available.



RX-80-B33



Same model as the RX-80-S33 but with a one-piece OR interchangeable shaped brass knife. Brass knives are better suited for very thick materials.

Replaceable Standard & Custom Shaped Knives

 

Replaceable hot knives are an option when knife wear requires, or if a different shape is needed. Replaceable knives can be precision machined from either stainless steel or brass plate. 



When replacing these knives, it's a good idea to clean the back of the knife and the surface of the heater block with very fine sandpaper to ensure efficient thermal contact.



We have supplied thousands of shaped knives in standard and custom shapes for many types of cutting applications. These are available as KNIVES only or as KNIFE ASSEMBLIES (see below)

R80-002-V2S

Standard interchange Stainless steel

single-V knife

R80-002-B44

Custom 4" x 4" interchangealbebrass knife

for military patch Velcro

R80A-002-V2S V Knife assembly with heater

R80A-002-V2S

V-shaped hot knife assembly for models RX-80, RX-84

Standard & Custom Shaped Hot Knife Assemblies

 

Shaped hot knife assemblies can be supplied to retrofit other models of the RX-80, RX-84, RX-75, and RX-90 models. 



Hot knife assemblies generally include a knife, heater block, heater, and appropriate mounting hardware for your machine. We can often make knife assemblies for competitors models.



To obtain a quote for a custom knife assembly, we'll need the following information:



  • Knife shape (use our worksheet if needed)

  • Material type, size, thickness, etc.

  • Approximate quantity of pieces to be cut

  • NOVA TECH Webcutter Machine serial # 

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NOVA TECH International, LLC • Graham, North Carolina USA • 336-513-5200 • 800-794-6682 • FAX 336-513-5213 • email

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© 2013 NOVA TECH International, LLC All Rights Reserved.

Webcutter Hinges

Our hinges are one of the most important components of the Webcutter hot knife. They must allow free movement of the rotating knife without excess play for hundreds of thousands of cycles. These hinges have gone through several design improvements over the years, as shown below. To adjust them, note the video to the right of the hinge type.

Evolution of the Webcutter hinges from 1998 to present: