KO 22.5" High Temp Oven for Extended Blades and Precision Heat Treating
The Evenheat KO 22.5 Heat Treat Oven is part of Evenheat’s higher-temperature KO series, engineered for stainless and high-alloy steels that demand higher soak temps than standard ovens can deliver. Firing up to 2350°F (1288°C), it gives knife makers the extra headroom needed for alloys that standard ovens can’t fully support, while still excelling with carbon and tool steels.
Its 22.5″ deep chamber strikes the perfect balance between capacity and footprint—long enough for chef knives, cleavers, and hunting blades, yet compact enough to fit comfortably in most shops and studios.
Backed by firebrick insulation and Evenheat’s efficient single-phase design, the KO 22.5 delivers even, reliable heat throughout the chamber. Safety features like the cool-touch handle and door shield protect your hands, while the swing-view control panel makes adjustments simple. Whether heat-treating a custom blade or running multiple pieces, the KO 22.5 ensures professional-grade results with confidence.
Key Features of the Evenheat KO 22.5 Heat Treating Kiln
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Ideal for Knife Makers: Optimized for stainless and high-alloy steels, while still excelling with carbon and tool steels.
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22.5″ Deep Chamber, 0.65 Cubic Ft: Accommodates extended blades and larger projects comfortably.
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Full Firebrick Construction: Delivers excellent heat retention for smooth, even cycles.
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Fires to 2350°F (1288°C): High temperature capacity for tool and stainless steels.
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Programmable Controls: Accurate programming for heating, soaking, and controlled cooling.
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Quiet Drive Solid State Relay (Now Standard): Silent, reliable temperature control that extends element life.
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Swing View Panel: Tilt-adjustable control panel for better visibility and comfort.
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Built to Fire Often: Rugged design made for daily heat treating in shops or studios.
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Relay Access Port: Makes relay replacement quick without removing the control box.
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Cool-Touch Handle & Door Shield: Protects your hands during loading while reducing wear on the firebrick.
Additional Options for the KO 22.5 Knife Oven
🗡 MK1 Blade Fixture
Measuring 5.25″ × 5.25″, this fixture provides ample space for foil inflation while staying rock-solid and stable. It won’t get in the way and won’t tip over.
🗡 MK2 Blade Fixture
Measuring 7¼″ × 7¼″, this fixture offers generous foil inflation space while remaining solid and stable. It stays out of the way and won’t tip over during use.
🔊 Loud Alarm Kit
Boosts your control alarm to 80 dB, loud enough to cut through busy shop noise so you never miss a quench. Installs easily on TAP or Rampmaster panels.
🛢 Quench Tank
Built from heavy-duty welded steel with bolt-on feet, this tank measures 24″ deep × 26″ tall and holds 3 gallons. It includes 6″ square steel tubing (0.120″ wall), a 5.75″ square opening, a ⅛″ steel lid, and durable welded handles for lasting reliability.
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 KO 22.5 Heat Treat Oven Specifications
| Feature |
Specification |
| Model |
Evenheat KO 22.5 |
| Function |
Knife and tool heat treating – stainless, carbon, and specialty steels |
| Interior Dimensions (D × W × H) |
22.5″ x 9″ x 5.5″ |
| Chamber Volume |
0.65 cu ft / 57.2cm D x 22.9cm W x 14cm H / 18.4L |
| Maximum Temperature |
2350°F (1288°C) |
| Voltage |
240V standard (200V, 208V, 220V, 230V by request) |
| Amperage |
15A |
| Wattage |
3600W |
| Receptacle Required |
NEMA 6-20 |
| Breaker Required |
20A |
| Weight |
~ 114 lbs (freight) |
| Line Frequency |
50Hz or 60Hz |
| Outside Dimensions (D × W × H) |
30″ x 20″ x 19.5″ |
| Controller Options |
TAP II Smart, Icon, Icon+, Rampmaster 3 |
| Shipping |
Freight truck |
Evenheat KO 22.5 Manual
Evenheat KO 22.5 Manual
