top of page
evenheat circle large red 100 x 100 at 7
KO 49.5 Extreme Final.jpg

KF Extreme Features

Chamber Depth

        Chamber Depths From 31.5" to 49.5"


The KF Extreme Series are designed for long work such as Damascus steel production, firearm barrels and of course swords and beyond.

Chamber depths start at 31.5" and go all the way to 49.5" - in 4.5" increments.

evenheat circle large red 100 x 100 at 7
KF Extreme Cold.jpg
Side Only
Solid State Option

        Side-Only Heating Elements


KF Extreme Depth models are designed with side-only heating elements. This is the same design that is used in our LB Series that provides excellent temperature distribution along the entire length of the chamber.

evenheat circle large red 100 x 100 at 7
KFF Extreme Hot.jpg

        Quiet Drive Solid State Relay Option


All KF Extreme depth models are available with our optional Quiet Drive Solid State Relay.

It's the job of the relay to turn the heating elements On and Off. A solid state relay can do so up to 120 times per second which allows for incredible temperature control. It also does so without the given, eventual failure of a mechanical relay. We fully expect our solid state relay to last the life of the unit.

We have more to tell you about our solid state relay, our design choices and why you should choose the solid state option. Just click below.

View our Quiet Drive Solid State Relay Info Here

evenheat circle large red 100 x 100 at 7
Dual Door
Multiple Control Options
Relay Access Port

        Dual Side Opening Doors


The extra deep chambers of the KF Extreme's require the use of dual doors front and back.

evenheat circle large red 100 x 100 at 7
KF Extreme Open Both.jpg
evenheat circle large red 100 x 100 at 7

        Multiple Control Options
Evenheat works closely with control manufacturers SDS Industries and Bartlett Instruments to bring you the best in performance, features and programming ease.

The KF Extreme Depth Series models are available with the very popular TAP touchscreen control by SDS Industries as well as the Rampmaster 3 by Bartlett Instrument.

There's a lot more to know about our controls. Just click below.

View our Controls Info Here


Relay Access Open LB lr.jpg

        Relay Access Port


All KF Extreme models incorporate our Relay Access Port for simple, no-panel-off relay replacement.

Simply remove the access plate to gain access to the relay. There's no need to remove the control panel and dig into the internal wiring. It's absolutely simple and effective and all it takes is a screwdriver!

It's a given that mechanical relays will fail at some point. This relay access port really comes in handy when they do.

evenheat circle large red 100 x 100 at 7
Quiet Drive b_edited.jpg
Door Latch Final.jpg

        Cool Touch Handles


The handles/latches on our swing out door are conveniently located at the front of the doors, not hidden along the side. These spring loaded, phenolic handles are cool to the touch, one-handed in design and serve as the door latch as well.

Many thanks to those who have offered feedback on our door handle/latch. We have updated the design to make centering, inserting and all-around operation cleaner and easier!

evenheat circle large red 100 x 100 at 7
Alarm 2018 2.jpg

        Loud Alarm Output Jack


KF Extreme models are standard equipped with a Loud Alarm Output Jack for use with our Loud Alarm Option.


All of our controls feature an audible alarm. These alarms let you know when you've reached temperature, and more importantly, when it's time to quench. These alarms however, aren't really loud enough to break through the noise found in a working shop. In response, we've included an alarm output jack on the bottom of the control enclosure that allows you to plug in our Loud Alarm (sold separately). Just plug it in and enjoy 80db of irritating alarm bliss.

You can purchase the Loud Alarm here:

buy now.jpg
evenheat circle large red 100 x 100 at 7
LB Swing View 1.jpg

        Swing View Control Enclosure


All temperature controls, except for the Set-Pro, are fitted into our Swing View Adjustable Enclosure.


The Swing View is a pivoting, swing-up enclosure that allows you to rotate the control to a comfortable viewing and programming angle. Once you're done, lay it back down to see it from across the shop. It's that simple.


The swing view pairs well with TAP touchscreen control as viewing angle can be perfectly aligned. You'll love it.

evenheat circle large red 100 x 100 at 7
Door Shield.jpg

        Door Shield


The KF Extreme's feature a door shield to provide protection against firebrick damage as well as to reduce the temperature seen at the door and door handle.

evenheat circle large red 100 x 100 at 7
KFF Extreme Hot.jpg

        2200°F (1204°C) Maximum Temperature


The maximum usable temperature for the KF Extreme Depth models is 2200°F (1204°C). This maximum is well within the range for the vast majority of steels used by knife makers and machine shops.

This maximum temperature is limited by the heating element wire used. We use a Sandvik Nickel-Chrome alloy wire for all KF model heating elements. This alloy has proven to last, it tends to stay put and generally plays very nice when used at temps below 2200°F.

evenheat circle large red 100 x 100 at 7
LB Tool Rest 1.jpg

        Strong Stand and Tool Rest


The stands of the KF Extreme Depth models have been upgraded to a stronger design and include a tool rest.


evenheat circle large red 100 x 100 at 7
bottom of page