How to make a sawdust stove for long combustion

In search of a cost-effective and environmentally responsible method to keep your house warm in the winter? For extended combustion, look no farther than a sawdust stove. This creative heating solution uses sawdust, a renewable resource, in addition to helping you save money on heating. Building a sawdust stove could be the ideal project for you if you’re interested in sustainability or are just looking for a cheap heating solution.

Conventional heating techniques frequently use fossil fuels, such as gas or oil, which can be costly and bad for the environment. A sawdust stove, on the other hand, provides a sustainable substitute that makes use of a readily accessible waste product. Sawdust is a byproduct of woodworking and is frequently available from nearby sawmills or carpentry shops for little or no cost. You can lessen your carbon footprint and help create a cleaner, greener world by reusing this waste material as fuel.

A sawdust stove’s ability to achieve long combustion times is one of its main advantages, as it allows you to enjoy consistent warmth for longer periods of time without having to refuel frequently. Because of this, it’s the best choice for heating your house over the course of an extended period of cold weather. You can optimize your sawdust stove’s efficiency and guarantee maximum heat output with the least amount of maintenance by carefully planning and building it.

You don’t need expensive materials or highly skilled carpentry to build a sawdust stove. Your home can have a useful and effective heating appliance made with a few simple tools and some know-how. We’ll walk you through every step of building a sawdust stove in this guide, from choosing the appropriate materials to putting it together and testing it. You can discover all the information you need to successfully construct and enjoy your own sawdust stove, regardless of your level of experience building.

Looking to keep your home warm efficiently? Look no further than a sawdust stove for long-lasting heat. By repurposing sawdust, a readily available and often discarded material, into a simple yet effective heating solution, you can reduce both your energy bills and environmental impact. These stoves operate on the principle of slow combustion, meaning they can provide heat for extended periods with minimal refueling. With some basic DIY skills and materials, you can easily construct your own sawdust stove, making it a cost-effective and eco-friendly option for heating your home. Whether you"re seeking to cut down on heating expenses or lessen your carbon footprint, a sawdust stove offers a practical and sustainable solution for keeping your living space cozy and warm.

Construction and principle of operation

The continuous combustion stove differs from the traditional burzhuyka in all visible aspects. Furthermore, no manufacturer produces it in bulk, and the entire design is the work of numerous amateur craftspeople. The new bourzhuika is similar to a "Slobozhanka," a round metal stove, but it burns fuel differently. This is the reason sawdust is used as the latter:

• heating with sawdust and wood chips is inexpensive due to the availability of such fuel;
• compressed sawdust burns for a long time, one load is enough for 6 to 10 hours of operation of such a heat generator.

The stove has a vertical configuration and consists of two cylinders, the smaller one mounted inside the larger one. The simplest variant is 2 barrels with capacity of 200 and 100 liters. Under the small barrel, which plays the role of a combustion chamber, there is a space for the ash box, which is removed through an opening in the lower part of the large barrel. To supply air to the furnace, the design of the firebox provides a round hole made in the bottom of the small cylinder. It enters through the ash drawer which is ajar. From above, the body is tightly closed with a lid, and on the side between the two stiffeners there is a chimney spigot.

There are no special intricacies in the way long-burning stoves operate. First, a cone is inserted vertically through the open top cover into the round hole made in the bottom of the furnace, and then the cone is inserted into the round hole in the bottom of the furnace. Then the combustion chamber is filled to the top with sawdust, which is tamped tightly. The cone is carefully taken out, the top cover is closed and you can start ignition. To do this, you take out the ash drawer, put wood chips, rays, small wood into it and set it on fire. The box is inserted into place without pushing it all the way in to leave a gap for air. Details of the process are shown in the video:

The compacted sawdust slowly starts to smolder under the influence of the chimney’s draft, and the long-burning stove switches on. After exiting the furnace, the combustion products warm the barrel’s walls before leaving through the chimney pipe. By using this technique of heat transfer, you can extract a sizable portion of the heat from the flue gases, increasing the heat generator’s efficiency to between 40 and 50 percent. Simultaneously, as previously stated, working with a single load can take up to 10 hours. The burzhuika on sawdust also offers the following benefits in addition to these:

• low cost in manufacturing;
• easy installation, the installation of the bun is only necessary to install a chimney with a satisfactory draught;
• low requirements to the quality of fuel;
• energy independence.

The inability to add fuel "on the fly" until the previous sawdust portion is fully burned through is the burzhuika’s drawback. Once more, the appliance only heats the space in which it is placed, just like any other iron stove. However, this drawback can be overcome by adding a water circuit and connecting it to multiple batteries that are kept in different rooms. Then a small private house or dacha will have full sawdust heating.

Recommendations for construction

A specific set of tools is needed to get started. Here’s a rundown of them:

• inverter welding machine;
• Angle grinder with circles for cutting metal;
• drill;
• tape measure and angle;
• various locksmith tools.

The easiest method is to use a barrel to make a bun, as was previously mentioned. First, the tops of each are carefully cut off, and metal handles and locking mechanisms must be welded to the large container’s cut-off portion to ensure a tight fit for the lid in the future.

Advice: Both vessels should be thoroughly cleaned before beginning work because heating can produce disagreeable smoke, the makeup of which varies depending on what was previously in the vessels.

The large container has a rectangular opening cut out in the bottom that is 250 mm wide and 100 mm high. This is where the drawer will be placed. The final one is 500 mm long and is welded from metal that is 1.2 mm thick below the opening’s dimensions. Two 25 x 25 mm angle guides should be welded to the inside of the barrel for convenience.

From a steel sheet with a thickness of 1.5-2 mm round tray is cut out under the inner diameter of the vessel. In a stove for heating a summer house or garage, it will serve as a support for the combustion chamber and separate it from the ashtray. A 60 mm diameter hole is made in the center of the pallet, the same hole is made in the bottom of the small container. Then the pallet is welded or placed on a stand of steel bars, keeping a distance of 150 mm from the bottom of the container. Before the final assembly of the stove, it is necessary to make a hole in the barrel body and insert the gas duct spigot into it, welding it in a circular pattern. The tapping point is in the middle between the two stiffeners (zigs). To regulate the intensity of combustion, it is recommended to build a rotary flap with a handle into the spigot. At the end, the small barrel is placed inside the large barrel on the pallet so that the holes in them are aligned.

A metal pipe with the proper diameter can be used as the combustion chamber in a sawdust firebox, as a firebox constructed of an ordinary barrel is not likely to last long.

The production of a 1.5 м loading cone is the final stage. There are two ways you can make it: with thin metal, or with wood. In any event, the cone’s lower end needs to be crafted so that it snugly fits into the tray’s round hole; in our example, this means that the cone’s size is 60 mm.

Stoves with a water circuit

Water can be heated using a stove that burns sawdust vertically. Here, however, its low efficiency will work to our advantage because the temperature of the flue gases leaving through the pipe is high enough. A tiny economizer is mounted on the chimney’s vertical section to benefit from this situation by removing heat from the waste gases. It’s a supply pipe-equipped water jacket for the chimney. The device can be built from a section of pipe that is 50–70 mm larger in diameter than the gas duct, or it can be bought already assembled.

A water tank or two tiny heating radiators are connected to this type of handmade firebox with a water circuit. This is one instance where convective water movement is preferable over forced circulation. However, control and safety devices like a pressure gauge, thermometer, and safety valve must be installed in order to monitor its temperature and pressure.

A long-burning sawdust stove could be the economical and environmentally responsible solution you’ve been looking for if you want to heat your home. This do-it-yourself project offers a productive way to use sawdust, a leftover from woodworking, while supplying steady heat for long periods of time.

Sawdust stoves use the power of prolonged combustion to provide hours of warm air for your home with little upkeep. These stoves’ design maximizes heat output while reducing fuel consumption by enabling slow, steady burning. This implies that you can have a comfortable ambiance without having to tend to the fire all the time.

Sawdust stoves are not only environmentally friendly but also very practical. You’re recycling waste material that would otherwise wind up in landfills or require energy-intensive disposal techniques by using sawdust as fuel. By heating your home sustainably, you lessen your carbon footprint and help create a more environmentally friendly future.

You don’t need expensive materials or highly skilled technical knowledge to build a sawdust stove. Home improvement enthusiasts of all skill levels can build a working stove for their house with the correct instructions and equipment. Additionally, you can modify the design of the stove to precisely fit your heating requirements and available space.

To sum up, a sawdust stove with extended combustion provides a useful, sustainable, and adaptable heating option for your house. Reusing sawdust and utilizing slow-burning technology will allow you to have efficient warmth while lessening your impact on the environment. A sawdust stove is something your home should think about getting, whether your goal is to live more sustainably or to reduce your heating expenses.

Video on the topic

Long-burning stove from a bucket

Heating the workshop with sawdust. Different types of sawdust burning stoves.

Long burning sawdust stove.

Sawdust stove with your own hands, garage heating