NEW RX-91 Series Pneumatically Operated Hot Knives

The NEW RX-91 series pneumatically operated hot knives now feature a built-in exhaust fan and open end for ease of use. These machines will cut and seal all types of synthetic materials, such as ribbon, webbing, strap, sling, cord, rope and hook and loop. Knife speed is controlled by adjustable metering valves. Knife temperature is regulated by any of several heat controllers. Choose from many different models, or create one of your own.  And still manufactured in the USA!

Download the RX-91 Brochure

MATERIALS NOTICE: Some of these machines use thermal tooling made of brass alloy and cannot be used with materials that contain any PVC. Please contact us for alternate tooling options.

pneumatic hot knife, heavy duty hot knife, webbing cutting machine

Pneumatically operated hot knives use compressed air to efficiently actuate the knife. These models include a foot pedal to keep both hands free for fast, efficient operation.

The NEW RX-91 Series now include

a built-in exhaust fume and cooling fan. 


Have a look:.

• Pull the webbing through the opening.


• Step on the foot pedal to cut.

• Webbing is cut and sealed!

NEW!!  Model RX-91-SAL-RK

5" / 128mm heavy-duty stainless steel hot knife with exhaust fan



16” / 400mm pneumatically operated hot knife for cutting and sealing fabric panels. This model features a programmable cut dwell timer and built-in fume exhaust fan. Shown here cutting felt panels.

Set dwell time and temperature on the controller. Once hot, just step on the foot pedal to actuate the timed cutting process. 

Model RX-91-SBP-TK

16" / 400mm pneumatic hot knife with Dwell Timer Controller

and built in exhaust fan

RX-91-SAL-RK  /  RX-91-SAM-RK


An excellent general pupose hot knife for all types of materials. Heavy duty pneumatic 5" (128mm) SAL stainless knife with Universal (-RK) or Digital (-DK) Heat Controller - suitable for most hot knife applications and materials up to 3/4" (20mm) thick. Includes pneumatic foot pedal.

RX-91-SAL-RK  5" / 128mm heavy duty hot knife

RX-91-SAM-RK 8" / 200mm heavy-duty hot knife

May also be fitted with Digital temp control or Dwell timer control.

Model RX-91-SAL-RK

5" / 130mm hot knife with

Universal Temp Controller

RX-90 Pneumatically Operated Hot Knives


Heavy-duty pneumatic 5" (128mm) SAL type stainless steel hot knife with electronic adjustable analog cut dwell timer and digital heat control. Stepping on the foot pedal initiates a timed cutting process. Ideal for cutting very long webbings by placing the cutting unit at one end of a table and foot pedal at the opposite end.  

hot knife, webbing cutter, nylon cutter, thermal knife

Model RX-90-SAL-DTK

5" / 128mm hot knife with Timer Control

pneumatic rope cutter, hot knives


The RX-90-SAM is a pneumatically operated 8" (200mm) hot knife with Universal heat-control for cutting and sealing wide webbing, strap, sling, and lift webbings. 

Model RX-90-SAM-RK

8" / 200mm hot knife with

Basic analog heater controller

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

USA & Canada

​for more information



© 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: