Build Tough Blades and Tools with KO 18" High Temp Oven
The Evenheat KO 18 Heat Treat Oven is a shop favorite for knife makers and machinists, thanks to its 18" chamber depth. It’s engineered as a high-temperature model, built specifically for stainless and high-alloy steels, while still being just the right size for most blades—long enough for chef and hunting knives, yet compact enough to fit easily into your workspace.
This model fires up to 2350°F, giving you the headroom to work with stainless, carbon, and tool steels with confidence. Its precise digital controls let you set soak times and ramps exactly as needed, so your blades come out with the hardness and consistency you expect.
Built with firebrick insulation, the KO 18 holds heat evenly throughout the chamber. That means fewer hot spots, smoother cycles, and reliable results whether you’re treating a single blade or running a small batch. It’s a kiln that helps you focus on your craft instead of fighting your equipment.
Key Features of the Evenheat KO 18 Heat Treating Kiln
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Best for Knife Makers: Specifically engineered for stainless and high-alloy steels, while also excelling with carbon and tool steels in common knife sizes.
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18″ Deep Chamber, 0.52 Cubic Ft: Sized right for chef knives, hunting knives, and machinist tools.
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Full Firebrick Construction: Provides excellent heat retention for even cycles.
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Fires to 2350°F (1288°C): Higher maximum temp for stainless and tool steels.
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Programmable Controls: Simple programming for accurate heating, soaking, and cool-down.
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Quiet Drive Solid State Relay (Now Standard): Reliable, silent temperature control that extends element life.
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Swing View Panel: Tilts for better viewing and easier access to controls.
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Built to Fire Often: Rugged design for daily use in shops or studios.
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Relay Access Port: Quick relay replacement without disassembling the control box.
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Cool-Touch Handle & Door Shield: Phenolic spring-loaded latch and stainless shield protect the firebrick and keep the door cooler for safe operation.
Additional Options for the KO 18 Knife Kiln
🗡 MK1 Blade Fixture
Measuring 5.25″ × 5.25″, this fixture provides ample foil inflation space while staying rock-solid and stable. It never gets in the way and won’t tip over.
🗡 MK2 Blade Fixture
Measuring 7¼″ × 7¼″, this fixture offers generous space for foil inflation while remaining solid and stable. It stays out of the way and won’t tip over during use.
🔊 Loud Alarm Kit
Raises your control alarm to 80 dB, loud enough to cut through noisy shop environments, so you never miss a quench. Installs easily on TAP or Rampmaster panels.
🛢 Quench Tank
Made 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 strong welded handles for lasting durability.
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 18 Heat Treat Oven Specifications
| Feature |
Specification |
| Model |
Evenheat KO 18 |
| Function |
Knife and tool heat treating – stainless, carbon, and specialty steels |
| Interior Dimensions (D × W × H) |
18″ x 9″ x 5.5″ |
| Chamber Volume |
0.52 cu ft / 45.7cm D x 22.9cm W x 14.0cm H / 14.7L |
| Maximum Temperature |
2350°F (1288°C) |
| Voltage |
240V standard (200V, 208V, 220V, 230V by request) |
| Amperage |
13A |
| Wattage |
3120W |
| Receptacle Required |
NEMA 6-20 |
| Breaker Required |
20A |
| Weight |
~ 102 lbs (freight) |
| Line Frequency |
50Hz or 60Hz |
| Outside Dimensions (D × W × H) |
25.5″ x 20″ x 19.5″ |
| Controller Options |
TAP II Smart, Icon, Icon+, Rampmaster 3 |
| Shipping |
Freight truck |
Evenheat KO 18 Manual
Evenheat KO 18 Manual
