| Model | KF 31.5 Extreme |
| Max Temperature | 2200 °F |
| Inside Dimensions | 10" W x 6.5" H x 31.5" Deep |
| Exterior Dimensions | 20" W x 19.5" H x 37" Deep |
| Volume (Cu. Ft.) | 1.18 |
| Shipping Dimensions | 29" x 29" x 39" |
| Power Plug Type | NEMA 6-50 |
| Voltage | 240 |
| Watts | 7200 |
| Amps | 30 |
| Shipping Weight (lbs.) | 150 |
Go deep with Evenheat's KF Extreme Depth Series Ovens.
Our Extreme Depth models are available in depths from 31.5" all the way up to 49.5". They feature dual doors and share the side-element-only design of the LB Series for phenomenal temperature distribution.
Users include sword makers, volume knife and heat treaters, Damascus steel makers and anyone needing lots of real estate.
The KF Extreme series is are available in a variety of control choice options as well as the solid state output option (which you want).
All KF Extreme Depth models feature dual doors (front and back) as well as side-element-only designs.
Features
Dual Side Opening Doors
The extra deep chambers of the KF Extreme's require the use of dual doors front and back.
Cool Touch Handle
The handle/latch on our swing out door is conveniently located at the front of the door, not hidden along the side. This spring loaded, phenolic handle is cool to the touch, is one-handed in design and serves as the door latch as well.
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.
Side-Only Elements
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.
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.
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.
Have questions? Read our knife maker's guide to Evenheat heat treat ovens.
Quiet Drive Solid State Relay
Evenheat's patented Quiet Drive Solid State Relay is hands down the best investment you can make in your kiln!
With no moving parts, this relay is able to be triggered up to 60 times a second as opposed to the upper limit of 10 times a second on the default mechanical relay. This means incredibly tight temperature control ensuring each and every one of your firings is as accurate as possible.
The Quiet Drive uses a special method call "Zero Crossing" that will ensure that the heating elements are off when the voltage is at 0V - Giving your heating elements a break so that they will last longer, and you'll save energy!
The best part though? Since there are no moving parts - the Quiet Drive Solid State relay should never need replacing! You will save money and time by never needing to worry about this in the future!
Controller Selection
Evenheat has close relationships with the manufacturers of a variety of digital controllers. This means you will have nothing but the best the best in terms of performance and accuracy in your firings.
With a selection of multiple controllers available - you can choose exactly what fits your needs.
TAP Touchscreen Smart Controller by SDS Industries
The top of the line. The bread and butter. The cream of the crop. The controller for those who want to make their lives easier, improve their craft, and make incredible quality products.
This is our top selling controller - And for good reason!
The TAP Smart Controller is without a doubt the best choice on the market right now - It's easy to use, has stellar performance, and is packed full with features!
It has more memory than any other controller, allowing you to more easily utilize, revise, and save many different kinds of firing programs.
Storage for firing programs is virtually unlimited! Create as many profiles, with as many steps as you'd like - you won't be limited by this controller.
Our favorite part though: When ordered with the Wi-Fi Dongle, you can control everything from any device! Prefer to work on your computer or tablet - how about your phone?
With an internet connection to your TAP Smart Controller, updates from SDS Industries can be applied to your controller automatically - ensuring you always have the most up-to-date software for years to come!
Easily adjust the in-progress firing, skip steps, and view all graphical information on your firing with just a "TAP"!
The amount of time you save by working with the TAP Smart Controller pays for itself for years to come - you'll be so happy with this investment that you won't know how you managed so long without it.
The TAP Smart Controller supports the Loud Alarm option.
Rampmaster
The Rampmaster provides additional versatility over the Set-Pro controller.
With a numerical keypad,
it allows the operators to create up to 12 firing programs, each including up to 8 segments.
Need to make adjustments as you go? On-the-fly adjustments and other menu functions are available to provide additional control and create your ideal firing profile.
The Rampmaster also supports the Loud Alarm option.
Loud Alarm Option
Don't worry about missing when your firing or treatment is complete - With the loud alarm option you'll slice through any loud shop to the tune of 80 decibels!
The Loud Alarm Option will notify you when your ideal temperature and hold has been reached, and more importantly - when it's over!
The TAP Smart and Rampmaster III controllers support a built-in jack for an easy install; simply plug it in!
MK Blade Fixture
A necessity for all knife makers! The MK 1 and MK 2 Blade Fixtures are used to hold your knives in place during heat treating.
The MK 1 will hold 4 blades, and while it is designed for the Evenheat KH series, it will fit in the KO, KF, and LB series as well.
The MK 2 will hold 6 blades and is designed for the Evenheat KO, KF, and LB series. It will not fit the KH models.
Power Interrupt Switch / Automatic Lid Shutoff
The power interrupt switch is a useful safety feature which removes power from the heating elements of your kiln once it is opened, and reapplies the power once the lid has been closed.
If you believe you'd ever like to open the kiln during firing, the power interrupt switch is a highly recommended addition to your new purchase.
Quench Tank
The quench tank is a compact and reliable solution for professional knife makers. Crafted with high-quality 6" square steel tubing, it offers durability and a generous 3-gallon capacity.
Measuring 24" deep and 26" tall (including bolt-on feet), it fits well in any workspace.
The 5.75" square opening with a 0.120" wall thickness allows for easy knife insertion and retrieval.
It features a 1/8" thick steel lid and welded handles for convenience.
Heat & Abrasion Resistant Kevlar Gloves
Kevlar Gloves - heat and abrasion resistant - industrial grade professional welder's choice - for use up to 1000F (535C) - do not contain asbestos - 14" (35 cm) length.
Crafted from superior-quality Kevlar material, these gloves offer exceptional resistance to heat, sparks, and molten metal splatter, ensuring maximum safety during every job.
Safety first - always; dealing with hot metal is a lesson any metal worker will say you only need to learn once!