Evenheat 49.5" Knife Oven with Longest Chamber for Maximum Blade Lengths
The Evenheat KF Extreme 49.5 Knife Kiln offers the longest chamber in the KF Extreme line at 49.5". This extra depth is ideal for full-length swords, large chef knives, and oversized tools that standard kilns can’t accommodate. You can also process multiple smaller blades together, helping you get more done in each firing.
Firing up to 2200°F, this kiln handles stainless, carbon, and tool steels with precision. The digital controls make it simple to set your soak times, ramp rates, and cooling cycles, ensuring consistent hardness and finish across even the largest projects. That means your blades heat treat evenly and reliably every time.
Safety and usability come built in. Dual side-opening doors make loading and unloading long pieces straightforward, while stainless door shields and cool-touch handles protect your hands. Whether you’re pushing the limits with extra-long work or running frequent batches, the KF Extreme 49.5 delivers dependable performance in every cycle.
Key Features of the Evenheat KF 49.5 Knife Kiln
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Made for Longest Blades: Designed for stainless, carbon, and specialty steels, including full-length swords and large knives.
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49.5″ Deep Chamber, 1.86 Cubic Ft: Largest chamber in the KF Extreme line, built for swords, oversized knives, or full-length projects.
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Full Firebrick Construction: Holds heat for smooth, consistent soaking and even hardness results.
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Fires to 2200°F (1205°C): Suitable for stainless steels, carbon steels, and tool steels.
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Programmable Controls: Program exact ramp, soak, and cool cycles for repeatable results.
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Quiet Drive Solid State Relay (Now Standard): Silent, accurate temperature control that extends element life.
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Swing View Panel: Angled controller position for clear visibility and comfortable programming.
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Relay Access Port: Allows quick relay service without taking apart the control box.
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Door Shields: Load from either side, protected by stainless door shields and cool-touch handles.
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Loud Alarm Output Jack: Hook up an external alarm so you never miss your quench time.
Additional Options for the KF 49.5 Heat Treating Oven
🗡 MK2 Blade Fixture
Measuring 7¼″ × 7¼″, this fixture provides ample room for foil inflation while remaining rock-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 quickly 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 sturdy 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 KF Extreme 49.5 Heat Treat Oven Specifications
| Feature |
Specification |
| Model |
Evenheat KF Extreme 49.5 |
| Function |
Knife heat treating – stainless, carbon, and specialty steels |
| Interior Dimensions (D × W × H) |
49.5″ x 10″ x 6.25″ |
| Chamber Volume |
1.86 cu ft / 125.7cm D x 25.4cm W x 16.5cm H / 52.7L |
| 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 |
~ 200 lbs (freight) |
| Line Frequency |
50Hz or 60Hz |
| Outside Dimensions (D × W × H) |
55″ x 20″ x 19.5″ |
| Controller Options |
TAP II Smart, Icon, Icon+, Rampmaster 3 |
| Shipping |
Freight truck |
Evenheat KF Extreme 49.5 Manual
Evenheat KF Extreme 49.5 Manual
