Evenheat 40.5" Knife Oven with Extended Length for Sword Blades
The Evenheat KF Extreme 40.5 Knife Kiln is built for long blades and big projects. With a 40.5" deep chamber, it easily fits swords, oversized chef knives, and batches of smaller blades in one firing, keeping your work consistent and efficient.
Reaching up to 2200°F, this kiln handles stainless, carbon, and specialty steels with precision. The digital controls let you set exact heating and soaking cycles, so your knives harden evenly and predictably. That means less stress during the quench and more confidence in your final results.
The KF Extreme 40.5 is designed for comfort and safety, too. Dual side-opening doors make loading easier, while stainless door shields and cool-touch handles protect you from heat. If you’re pushing the limits with longer blades or frequent heat treatments, this kiln delivers reliable performance day after day.
Key Features of the Evenheat KF 40.5 Knife Kiln
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Best for Knife and Sword Makers: Handles stainless, carbon, and tool steels, including oversized knives and long swords.
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40.5″ Deep Chamber, 1.52 Cubic Ft: Spacious design for oversized projects or multi-blade runs.
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Full Firebrick Construction: Retains heat for even soaking and consistent hardness results.
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Fires to 2200°F (1205°C): Handles stainless steels, carbon steels, and tool steels with ease.
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Programmable Controls: Program accurate ramp, soak, and cool-down cycles for repeatable results.
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Quiet Drive Solid State Relay (Now Standard): Provides silent, precise temperature control and extends element life.
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Swing View Panel: Tilting control panel offers clear visibility and comfortable access.
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Relay Access Port: Quick and simple relay replacement without dismantling the control box.
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Dual Side-Opening Doors with Stainless Shields: Protect firebrick and reduce heat at the handles for safer operation.
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Loud Alarm Output Jack: Connect an external alarm to ensure you never miss a quench in a busy shop.
Additional Options for the KF 40.5 Heat Treating Oven
🗡 MK2 Blade Fixture
Sized at 7¼″ × 7¼″, this fixture provides ample space for foil inflation while staying solid and stable. It won’t get in your way and won’t tip over during use.
🔊 Loud Alarm Kit
Raises your control alarm to 80 dB, loud enough to cut through busy shop noise so you never miss a quench. Installs quickly on TAP or Rampmaster panels.
🛢 Quench Tank
Built with heavy-duty welded steel and 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 KF Extreme 40.5 Heat Treat Oven Specifications
| Feature |
Specification |
| Model |
Evenheat KF Extreme 40.5 |
| Function |
Knife heat treating – stainless, carbon, and specialty steels |
| Interior Dimensions (D × W × H) |
40.5″ x 10″ x 6.25″ |
| Chamber Volume |
1.52 cu ft / 102.9cm D x 25.4cm W x 16.5cm H / 43L |
| Maximum Temperature |
2200°F (1205°C) |
| Voltage |
240V standard (200V, 208V, 220V, 230V by request) |
| Amperage |
30A |
| Wattage |
7200W |
| Receptacle Required |
NEMA 6-50 |
| Breaker Required |
30A |
| Weight |
~ 175 lbs (freight) |
| Line Frequency |
50Hz or 60Hz |
| Outside Dimensions (D × W × H) |
46″ x 20″ x 19.5″ |
| Controller Options |
TAP II Smart, Icon, Icon+, Rampmaster 3 |
| Shipping |
Freight truck |
Evenheat KF Extreme 40.5 Manual
Evenheat KF Extreme 40.5 Manual
