FAQ

Below you'll find answers to frequently asked questions that will help you quickly understand the most important points.

Our stoves are made of gray cast iron, which is an alloy of iron and carbon. We melt this metal in a furnace called a cupola, and then pour the molten metal into disposable sand molds.

Unlike most rocket stoves available on the market, which are welded from profiles or pipes, each of our stoves is a single, seamless piece of metal.

The process begins with an idea. We then prepare a 3D CAD design, which we use to create a casting model. This model is used to make a mold from molding sand—a mixture of quartz sand, coal dust, and bentonite.

The finished mold is poured with molten metal at a temperature of approximately 1400°C. Once solidified, the casting is removed from the sand mold, and the sand is reused.

The raw casting is then shot-blasted, sanded, and subjected to quality control, after which it is coated with a clear heat-resistant varnish. Surfaces that come into contact with food are treated with cold-pressed rapeseed oil.

The operating principle and performance of both models are nearly identical. The DUKE model has a shorter chimney, making it slightly lighter. The KING model, thanks to its longer chimney, makes better use of the flame swirl effect.

Yes. All add-ons and accessories are compatible with both models.

Cast iron products are exceptionally durable, provided they are not exposed to mechanical damage.

For example, if a grill grate falls from a height onto a hard surface, the handle may break. It is also important to remember to properly clean and maintain cast iron skillets. There are many guides on this topic available online.

By following these guidelines, our products will last a lifetime.

Yes. The stove is weather-resistant and can stay outside all year round. At worst, it might develop a slight rusty patina, which often adds to its charm. Let it stand there and catch people’s attention—every guest is sure to ask, “What is that?”

Rocket stoves are known for their highly efficient wood combustion. This allows us to extract more energy from the same amount of fuel and use significantly less wood.

During operation, virtually no smoke is produced, which reduces the amount of soot and toxic substances. The heat output is adjusted by the amount of fuel in the combustion chamber.

It’s best to use dry brushwood or wood cut into small sticks. To get the full benefit of a rocket stove, the fuel must be dry and finely chopped. This makes rocket stoves very economical and eco-friendly.