Hot Knife Instr Datasheet by Techflex

104 Demarest Road Sparta, NJ 07871 1-973-300-9242 Toll Free 1-800-323-5140
Handheld Hot Knife
Hand Held Hot Knife - HKH0.00BK
Replacement Knife Blade - RBH0.00SV
Heavy Duty Handheld Hot Knife
HD Handheld Knife 110 volt - GK10.00GN
HD Handheld Knife 220 volt - GK20.00GN
Heavy Duty Hot Knife
Heavy Duty HK 110 volt - GK50.00BE
Heavy Duty HK 220 volt - GK60.00BE
Compact Hot Knife
Compact HK 110 volt - GK30.00BE
Compact HK 220 volt - GK40.00BE
Bench Mount Hot Knife
Bench Mount Hot Knife - HKB0.00WH
Replacement Knife Blade - RBB0.00SV
Measure the sleeving to length. Keep
the sleeving relaxed and don’t pull it
as you measure. The most accurate
method is to measure the sleeving
on the actual application. There will
be some foreshortening of the sleev-
ing as it expands over large bundles
or connectors. Mark the cut line with
a pen or marker.
When the knife is hot, slide the
sleeving over the cutting blade.
Practice on a piece of scrap to get a
feel for the procedure. Always cut in
a well ventilated area and avoid
inhaling the fumes. Both the blade
and the cut ends will be HOT. Be
While the ends are still hot, use an
inverted funnel (needle nose pliers
or scissors also work well) to form
the end into a soft flare. This will
allow the sleeving to easily slide
over your application and accommo-
date plugs or connectors without
To install the sleeving over your
application, just push the flared end
over the ends of the wires and “walk”
the sleeve down the length of the
bundle from behind. Once the sleev-
ing is in place, just run your hand
over the applied sleeving to smooth
it out.
What is a Hot Knife?
A hot knife is a tool with a narrow metal strip that is heated to a temperature sufficiently high to melt the polymer filaments of most types
of braided sleeving. This melting not only cuts the sleeving to the desired length, but also fuses the loose ends of the filaments together to
prevent fraying of the cut end during installation and use. A hot knife speeds production by alowing you to cut all of your sleeving in advance,
and then install the precut lengths at your leisure without any concerns that the material will fray or unravel.
Typically, hot knives have a blade connected to 2 poles of an encased transformer. When a current passes through the blade, resistance
causes it to heat to the desired temperature. Hot knives that are designed for field use when no source of electricity is available are usually
lower temperature devices powered by a butane flame that heats the blade and allows it to cut and seal the material.
Setting up your hot knife for the first time
When you receive your new hot knife, mount the blade to the posts and tighten. When the knife is turned on for the first time, there may be
some smoking while the manufacturing oils burn off. Leave the knife on for about 20 minutes and turn it off. After it cools, check the tightening
screws on the posts and retighten if necessary. Your knife is now ready to provide years of trouble free service. Check the tightening screws
periodically to ensure good contact with the posts.
Hot Knives should always be used in a well ventilated area to avoid inhalation of the fumes.