Create Strong, Reliable Blades with the KH 414 Evenheat Knife Oven
When you’re tempering blades, the Evenheat KH 414 Knife Heat Treat Oven brings precise, high-heat control right to your workspace. It heats to 2200 °F inside a compact chamber, so you can treat single blades or small batches—without hogging your shop.
With a chamber deep enough for most knife profiles at 13.5″ D × 6.5″ W × 4.25″ H (0.22 cu. ft), you get room for multiple blades or larger pieces, while the wrap-around element ensures swift, even heat. That means consistent temper colors, steady grain, and blades that feel balanced and sharp right out of the oven.
Designed for plug-and-play ease, the KH 414 runs on standard 120V power and works on both 50 Hz and 60 Hz systems. You don’t need special electrical work—just set it up, dial in your temp, and trust the kiln to hold your blade at the right heat to bring out hardness and strength.
Key Features of the KH 414 Electric Heat Treat Oven
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120V North American Operation – Designed for heat treaters without access to 240V. Reaches 1650 °F in about 1½ hours.
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Compact, Deep Chamber – 13.5″ D × 6.5″ W × 4.25″ H (0.22 cu ft) for blades, billets, and small batches.
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Wrap-Around Element – Includes heating along the back wall for uniform heat distribution.
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2200 °F Maximum Temperature – Suitable for most steels used by knife makers and metalworkers.
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Cool-Touch Handle – Front-mounted, phenolic, spring-loaded latch stays cool and allows one-handed operation.
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Loud Alarm Output Jack – Connects to the optional Loud Alarm for an 80 dB alert, ensuring you never miss another quench.
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Relay Access Port – Replace relays easily via an access plate—no panel removal required.
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Firebrick Construction – Insulates and stores heat, then releases it gently during soaking.
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Quiet Drive Solid State Relay (Now Standard) – Built-in SSR technology offers tight control and longer element life.
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Door shield – Protects against firebrick damage and reduces heat at the door and handle for safer operation.
Additional Options for the Evenheat KH 414 Knife Kiln
🗡 MK1 Blade Fixture
Used in KH models, this fixture securely holds up to four blades.
🛢 Quench Tank
Durable welded construction with bolt-on feet, measuring 24" deep and 26" tall. Features a 3-gallon capacity, 6" square steel tubing with 0.120" wall thickness, a 5.75" square opening, a ⅛" steel lid, and sturdy welded handles.
Who We Are
Modern Potters is women-owned and operated. We're all about hard work, continuous learning, and celebrating creativity in all forms. And like you, we LOVE bringing ideas to life.
We're Potters Ourselves! Starting with clay taught us that great work happens at high temperatures, so whether you're working with ceramics, glass art, metalworking, or industrial applications like DPF cleaning, we're here for you.
P.S. The cute pup's name is Kodah, he's the CPO (Chief-Pottery-Officer). He's the one who threw the bowl in the photo, if you can believe it. ✨
Evenheat KH 414 Specifications
| Feature |
Specification |
| Model |
KH 414 Knife Heat Treat Oven |
| Function |
Knife Tempering • Heat Treating • Harden Small Runs |
| Interior Dimensions (D × W × H) |
13.5″ × 6.5″ × 4.25″ |
| Chamber Volume |
0.22 cu. ft / 6.2 L |
| Maximum Temperature |
2200 °F (1205 °C) |
| Voltage |
120V standard |
| Amperage |
13A |
| Wattage |
1560W |
| Receptacle Required |
NEMA 5-15 |
| Breaker Required |
15A |
| Weight |
~70 lb (freight) |
| Outside Dimensions (D × W × H) |
19" x 16.5" x 17.25" |
| Controller Options |
TAP II Smart, Icon, Icon+, Rampmaster 3 |
| Shipping |
Freight truck |
Evenheat KH 414 Manual
Evenheat KH 414 Manual
