Paragon SB-25 Sand Bath - KM Series - 37"W x 28"D x 41"H

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Paragon SB-25 Sand Bath
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SB-25 Sand Bath - KM Series - 37"W x 28"D x 41"H

Paragon SB-25 Sand Bath Knife Making Furnace

Even heat distribution

Sand bath heat treating is renowned for even temperatures. The sand fills a stainless steel crucible, which is held vertically inside the furnace. The crucible extends past the top of the furnace through a hole in the lid.

Please note: The crucible is not included with the SB-25. It is sold separately. The price depends on the diameter of the crucible.

Three thermocouples for precise heat measurement

The SB-25 has three temperature sensors (thermocouples). Two are inside the firing chamber, and the third is immersed in the crucible through the top. The immersion thermocouple is sheathed for long life. It is held by an adjustable mounting bracket. You can raise the thermocouple out of the crucible by loosening and raising the bracket. When necessary, turn the bracket to move the thermocouple out of the way.

Air or inert gas makes the sand flow

A small amount of air or inert gas is pumped through the crucible from the bottom. This causes the red-hot sand to flow almost like a liquid, though the sand remains a solid. A stainless steel sand catchment funnel at the top of the kiln (not shown in photos) prevents particles from bubbling out of the crucible.

The inert gas prevents scaling on the steel. If your steel doesn’t require the inert gas, you can pump air through the sand.

Heavily insulated; heavy duty construction

The firebrick walls are 4 1/2” thick, and the top and bottom are 3” thick. The furnace includes a lid that fits on top of the crucible. In addition, the crucible extends out of the furnace through a hole in the main lid. The lid covered with stainless steel for protection from hot sand.

Enjoy the convenience of a stand with locking casters. Gain access to switch box electrical parts through the easy-access control panel.

The furnace sections, wrapped in durable stainless steel, are held together with locking clamps.

Required safety equipment

Please note that safety glasses are not adequate. It is essential that you wear a full face safety shield, heat-resistant gloves, heat-resistant jacket, heat-resistant shoes, and heat-resistant pants. The sand is hot enough to cause severe burns if it spills out of the kiln.


Optional colors at no extra charge

Brighten your studio with color! Order your kiln in one of our standard colors at no extra charge . . . berry, black, blue, hot pink, jade, navy, purple, or turquoise. Scroll down to see color samples in the options section.


Max. Temperature










Breaker Size


Circuit Copper Wire Size

6 gauge

TUV tested to CSA and UL Standard 499




IMPORTANT: Some areas such as Canada and Europe require a lid or door safety switch on kilns.

Control Type

Sentinel Touch Screen





Nema Details

Disclaimer: The specifications above assume that the kiln will be plugged into a dedicated circuit. Local electric codes supersede our recommendations.

The pricing and electrical specifications for the above products reflect their design for use in the United States. The International versions of most models will have variations in electrical specifications and price due to consumer safety requirements or electrical regulations.


Kiln Type

Top Loading Round



Understanding Chamber Measurements

Chamber Volume

2.16 CU.FT.
61.16 litres

Chamber Width

13.00 IN
330 mm

Chamber Depth

25.00 IN
635 mm

The Outer Size of the Kiln and the Shipping Size: Width = Left to Right; Depth = Front to Back; Height = Top to Bottom

Outer Size

37.00W x 28.00D x 41.00H Inches
940W x 711D x 1041H mm

Ship Size

38.00W x 41.00D x 47.00H Inches
965W x 1041D x 1194H mm

Ship Weight

624.00 Lbs.
283.05 Kg.

Doorway Clearance Needed

28.00 Inches
711.20 mm