DIY stove from an old bathtub. How to make a stove from an old cast iron bathtub with your own hands. How to cut a cast iron bathtub

What just do not come up with to build with their own hands craftsmen from improvised means. If you have an old one, which is usually adapted for watering the garden, and the construction of a bath is brewing, then you can save a lot by making a stove in the steam room from this bath. We will tell you how to make such a stove step by step with photos and videos.

Advantages of cast iron

Oven from cast iron bath will be almost eternal. Even enamel will not burn out quickly. In Soviet times, enamel was applied in two layers. The enamel contained quartz sand. After enamel coating, the product was baked in an oven at a temperature of more than 800 degrees. The sand melted, and this coating served for decades. The only way to damage the enamel was with a strong blow from a heavy object.

Cast iron bathtub is durable enough to make a stove out of it

In addition, cast iron has a high heat capacity, accumulates and releases heat well. Not afraid of corrosion. The industry produces fireboxes and grates from cast iron, since it does not burn out for a long time, unlike steel. But cast iron is a rather brittle metal.

Cutting the bathtub

It is best to saw the bathtub outdoors, after turning it upside down. Cast iron is a brittle metal, so the procedure requires care. The cutting is done with a grinder. Buy several at once cutting discs. We make markings, and then slightly incise the enamel along the line so that chips do not form with a full cut. We saw through cast iron at a slight angle and make sure that the tool does not heat up. We take breaks. To prevent the halves of the sawn tub from pinching the disc at the final stage of cutting, place supports made of wood or brick along the edges of the cut.

Bathroom cutting is done with a grinder

Furnace foundation

The type of foundation depends on the total weight of the furnace:

A brick base is suitable for a light stove. The bricks are laid on edge and bonded with mortar. Cement grade for binder mortar is not less than M300;
for a heavy furnace weighing more than 700 kg, a self-leveling foundation with a depth of at least 50 cm is required. Formwork is made and poured with liquid concrete with or without filler. The filler will be fine broken brick or crushed stone.

The stove can only be built on a solid and heat-resistant foundation.

The top of the base is placed flush with the floor or 15 cm below the floor level. To protect the base from moisture, the bottom and walls of the formwork are covered with roofing felt and all joints are coated with bitumen.

Advice. The base should protrude 50 cm beyond the boundaries of the stove. In front of the combustion chamber, 1.2 m of space should remain free.

Furnace No. 1

This version of the stove is capable of heating a bathhouse of 7 square meters. m to 80 degrees in just a couple of hours. To build a stove you will need scrap metal: a cast iron bath, a gas cylinder and a metal drum from a conveyor belt with a diameter of 40 cm. The drum can be replaced gas cylinder or a pipe - this will be the combustion chamber. The sequence of work is as follows:

Advice. If you weld a flat metal platform to the cylinder, you will get a stove for heating the kettle.

Furnace No. 2

From a cast iron bath sawn into two parts you can make a combustion chamber for sauna stove. You will need one half, the second can be used for the fireplace.

The remaining half can be used to build a fireplace. Cast iron can easily withstand brickwork, if you line the fireplace with an arched vault. And for this you do not need to make complex pattern from plywood. The front part is decorated with a portal. The chimney is removed. You can make the fireplace closed by installing a transparent door on the firebox and admire the flames.

Advice. Cast iron and red ceramic bricks have different coefficients of thermal expansion. Therefore, when constructing brick walls provide expansion joints that are filled with asbestos or fire-resistant basalt cardboard.

Furnace No. 3

The third version of the stove is often used as a garden barbecue and for cooking in the summer. If the upper chamber is filled with stones, then such a design will replace a traditional stove in a small bathhouse, so we will not ignore this model.

Such non-standard designs are easy to manufacture and require minimal financial costs. An item that has served its purpose will get a second life, and you will receive a convenient and practical stove that will serve you faithfully for many years.

Universal stove for a bath: video

Sauna stove made of cast iron bath: photo

There comes a time when plumbing fixtures, due to their type or malfunction, become unsuitable for use. But, having replaced it with a new one, you should not rush to throw it away. Summer residents and home owners can easily make a garden stove from a cast iron bathtub, which in terms of strength and service life will not be inferior to factory models.

Advantages of using cast iron

This type of metal is rightfully considered one of the best furnace materials. Its main advantages include:

Environmental safety. When heated, it does not emit harmful substances.
Resistance to temperature changes. An outdoor stove made of brick may begin to crumble after just a few years.
High thermal conductivity. A fireplace made of cast iron will warm up a room much faster than one built from other materials.
Durability. Cast iron is the leader among metals in terms of strength. Even steel stoves are less reliable.
Ease of use.
Fire safety.

The disadvantages of cast iron that are worth paying attention to are brittleness and susceptibility to corrosion. In the first case, unnecessary mechanical influences should be avoided; in the second, the surface should be treated with special solutions.

A homemade cast iron structure will not turn out very beautiful, so it is recommended to cover it with brick or stone.

Preparation of materials and tools

To create such a miracle stove from a bathtub, you need to prepare:

angle grinder (grinder);
2–3 circles on metal with a thickness of at least 1 mm and a diameter of 12.5 cm;
electric drill;
metal drills with a diameter of 9, 11 mm;
grinding wheels;
files;
hammer;
level;
construction gun (for applying sealant);
plumb line;
putty knife;
Master OK.

Materials you will need:

iron or steel sheet 5 mm;
fireproof red brick;
grate;
sealant;
clay;
sand;
metal corner;
bolts with nuts, washers;
chimney pipe with a diameter of 12 cm.

Photo: the material is prepared, all that remains is to choose the purpose of the oven and get to work

When all the materials and tools have been collected, you can start cutting the container. For convenience, you can turn it upside down or lay it on its side.

Users often search:

You need to handle the grinder carefully so as not to damage the surface.

Before you start sawing the bathtub, there are several nuances to consider:

Marking will simplify cutting the product.
The first layer of enamel is removed strictly along the drawn line. This will help prevent chipping along the edges.
The next step is to cut the cast iron. Do this gradually, in small pieces of about 10 cm, so as not to overheat the grinder.
When the bathtub has already been cut in half, supports are placed under each part. They will prevent parts from falling and damaging the tool or material.

According to reviews experienced builders, grinder It's better to work at an angle. This way the enamel will not begin to peel off and all cuts will turn out smooth without burrs.

If you use a high-quality grinder, processing cast iron will take no more than 1 hour.

For a barbecue you will need two halves of the bath: one part will serve as a fuel loading chamber, the other is necessary for cooking. For a sauna stove or fireplace, one half will be enough.

Step-by-step creation of a stove from a bathtub

Without construction experience, it is worth consulting with a specialist about all the intricacies of masonry and installation of parts, and it is better to carry out the work under the supervision of a foreman. This way the product will be of high quality and standard. fire safety will be respected.

As for the construction of the foundation, its type depends on the total weight of the furnace:

For a structure over 700 kg, a monolithic or strip base with a depth of 50 cm should be installed. Formwork is constructed around the perimeter of the pit and covered with a layer of crushed stone or broken bricks. It gets compacted. Filled with concrete.
For furnaces small sizes A brick foundation will suffice. It is recommended to purchase cement grade no lower than M300. The bricks are placed edgewise and fastened together with mortar.

Now let's consider detailed instructions for the manufacture of each of the furnaces for different purposes.

For the bath

To create in the steam room the necessary conditions, the design must meet the following requirements:

have high thermal power;
regulate convection currents;
produce sufficient steam.

The procedure for constructing a sauna stove:

It is important to note that the foundation must have a protrusion towards the borders of the furnace of at least 50 cm, and 1–1.5 m of free space must be left in front of the firebox.

An interesting idea to make a sauna stove from both halves of the bathtub. The second part will be needed as an extension for heating water, or you can use it to build a Russian heater.

For cooking

On summer cottage not to do without a barbecue or a brazier. And the opportunity to bake delicious bread and fry meat in the fresh air forces owners to install small outdoor ovens on the premises.

Here is a description of how to build a barbecue step by step from the bath.

The sequence of work is as follows:

Some craftsmen leave the barbecue in this condition, but in order for your stove to look beautiful, you should still do exterior finishing.

There are several options:

Whitewashing the clay part.
Whole masonry ceramic tiles or pieces of it.
Surface finishing natural stone pre-cut into pieces 10 mm thick.

The materials are attached to the furnace with heat-resistant adhesives.

A good solution is to install a chimney to the stove through the bathtub drain hole, widening it in advance, and only then weld it to a steel sheet.

For heating

In the country, it is easy to build a fireplace from half a bath. He can be:

Built into the wall. Suitable if the house has brick walls. Significantly saves free space.
Reclined (half-open). The firebox is located at a considerable distance from the wall. This fireplace does not require a separate foundation; it is mounted directly into the floor. It has good traction and a built-in ash pan.

The advantage of using a cast iron bath for the combustion part is that the fireplace is shaped like an arch and eliminates complex brickwork. The hole for the chimney pipe is made at the top of the bathtub. The outer part is decorated with a fireplace portal.

When building a semi-open fireplace, the following recommendations should be taken into account:

Poured under the base cement mortar up to 15 mm thick.
A metal mesh is laid on top.
A layer of waterproofing is applied.
Insulation such as asbestos cardboard is laid.
A pedestal for the firebox is being built. Brick or aerated concrete will do. The binder mixture is cement mortar or heat-resistant glue.
The structure is plastered. You can decorate it with stone or ceramic tiles.
A gap is left between the lining and the firebox for the convection heating system.
The chimney pipe is mounted in the hole made and discharged through the ceilings and roof. Often done in the shape of a sleeve.
The inside of the firebox and chimney are lined with heat-insulating, non-combustible material.
The lower part of the fireplace is being finished.
The product is closed on the side and top with a frame made of aluminum corners connected with self-tapping screws.
The frame is covered with plasterboard.
Holes are made in the cladding for air ventilation.

When installing a chimney, it is important to take into account that with a pipe height of up to 5 m, the deflection angle is 45 0, over 5 m - no more than 20 0.

For waste disposal

An unusual solution to build from old bath waste incinerator.

The principle of its construction is similar to a street barbecue.

Layout of the stove on a brick base

An alternative is to remodel an old heater by removing all parts except the grate and body. Part of the cast iron is welded to the base from the inside to strengthen the structure.

You can load waste into this fire bin directly from the top. When burning, the stove should be covered with another part of the bath so that the smoke does not disperse throughout the entire area.

So you shouldn’t rush to get rid of things that are out of order or out of shape. IN in capable hands even an old bathtub will get a second life and become a functional stove that will last for many years.

If you have an old cast-iron bathtub lying around somewhere in your garage or dacha, you shouldn’t rush to sell it for scrap. It can be used to make an excellent outdoor oven and install in the garden.

A stove made from an old unnecessary thing will become decoration and an excellent assistant, delighting guests and household members with delicious and original dishes.

Most often, old cast iron bathtubs are made from garden barbecue oven. The cast iron from which the bath is made, having high thermal conductivity, retains heat for a long time and allows you to cook not only the usual food, but even bake bread and other unique dishes.

How to make a stove from an old cast iron bathtub?

The essence of the construction is that the bath cut in half. The resulting halves are placed one on top of the other, with the curved side outward, and laid metal sheet between them.

It separates the firebox and the chamber in which the food will be cooked. Holes are made in the sheet of iron and the upper half of the bath for chimney and the pipe is welded.

It remains to strengthen the structure, give it interesting view, insert grate bars and do doors.

Necessary materials and equipment

To build a garden stove you will need:

herself bath, it can be steel, but better - cast iron;
Bulgarian;
edged metal cutting wheels;
circles for grinding;
Metal sheet thick 5 mm and more;
drill;
bolts;

heat-resistant sealant;
tape measure or roulette;
pencil or marker;
welding machine ;
pipe for chimney;
grate bars;
bricks;
clay;
sand.

Preparatory work

Before you start building a structure, you need to make all the pieces:

Mark the middle of the bathtub and cut it in half - this work is labor-intensive and dusty, so it's better to spend it outside by turning the bathtub upside down.
Cut a blank from a metal sheet to the size of the resulting half.
On a cut sheet of iron and half of the bathtub that will be on top, mark holes for the chimney and cut them out.
weld pipe into the partition and bring it out through the upper part.
Do markings for fasteners.

Important! All work on cutting, grinding edges and trimming iron sheets must be carried out wearing goggles. A welding work- V special mask.

DIY stove construction

When all preliminary the work is done, you can proceed directly to the construction of the furnace itself.

Foundation

Furnace design pretty heavy, so you can’t do without a foundation. It will not allow the device to shrink and deform.

For a structure that is not heavy in weight, the foundation can be brick. For more significant is done bulk— depth up to 50 cm. To ensure that the stove is at a convenient level, supports of the required height are concreted into the foundation.

Further work is being carried out after complete drying foundation.

Assembly of the structure: photo

Half of the bath, which is reserved for the lower combustion part of the stove, coated with sealant, the top is covered with pre-cut sheet of iron with a welded chimney. You can insert cast iron into this sheet hob.

Photo 1. A cast-iron bathtub, carefully sawn in half, is prepared for applying sealant.

Top design covered with the other half bathtubs, bottom up, passing the chimney pipe into a pre-cut hole. Edges in contact with metal sheet, are also coated with sealant.
Both halves of the bath and the sheet between them fastened together with bolts.

Photo 2. The connected halves of the bath form the body of the stove: the combustion chamber and the cooking compartment.

Finished design mounted on supports in the foundation and lined with bricks. The masonry can be only on the back and sides or on all sides.
In the lower part - the combustion chamber - is installed grate.

Photo 3. The stove, assembled from two halves of the bath, is almost ready. All that remains is to fit the doors.

If the design of the furnace includes a firebox and ash chamber covered with brickwork, then during operation immediately doors are mounted: for the blower in the lower part, for the firebox - a little higher, opposite the grate.

Important! The damper or door handle must be wooden to avoid burns.

The wall is laid out to the junction of the edges of the bathtub with each other. The bricks must fit tightly to all edges of the stove.

For the top compartment stoves are provided flap or door. In the tightly closed part you can not only cook any dishes, but even bake bread.

Insulation of the cooking chamber

Upper half drags on chain-link mesh, throws a solution of 1 part clay and 2 parts sand, thickness up to 7 cm and levels out. You can decorate the top wild stone, pieces heat resistant tiles or simply whitewash.

The final stage

That's it - bake ready, you can already use it. But many are trying to give it more modern look Why is rough work hidden? beautiful brickwork, veneer wild stone or decorative tiles.

Photo 4. Finished whitewashed cast iron stove from a bathtub, installed in the garden on a brick base.

Possible difficulties during work

Problems when constructing a garden stove, problems may arise on preparatory stage when cutting into an old cast iron bathtub.

Advice. Work is carried out wearing glasses and tight clothes covering the body.

Need to cut it carefully, don't rush. First, the enamel layer is cut along the marking line to prevent chipping. Then the cast iron is cut at an angle, making small cuts, and not allowing the angle grinder to overheat. To prevent the disc from being pinched by the bath halves, the incision site is bursting wooden stick or brick.

A DIY stove made from an old cast-iron bathtub opens up endless possibilities for every craftsman who loves to make things with his own hands.

Collapse

Due to the natural obsolescence of cast iron bathtubs, their cost decreases from year to year, and the benefits during the construction of a furnace cannot be measured by any money.

Forget that your own oven is expensive. All you need is a small set of tools and some personal time.

Construction device

Most often, a cast iron bathtub of the classic type is used, which is divided into two equal parts. The free plane on top is covered with a steel sheet to create a closed space.

The base can be a concrete floor or brickwork. If the cut is made correctly, there will be no open cracks that will interfere with traction.

The actual chimney pipe is connected at the outlet of the drain, which eliminates the need for a number of additional cuts and drilling. It is worth understanding that a stove from a bathtub cut in half can be additionally sold or gifted to close friends, since it is possible to create two stoves from one bathtub.

An example of a stove made from a cast iron bath in the photo:

Conclusion

There is nothing difficult about creating your own stove from a cast iron bathtub. Follow the instructions carefully to get fantastic results. Rest assured that the quality of the stove will not be inferior to industrial models, but the cost will be orders of magnitude lower than that of the original!

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Advantages of using cast iron

This type of metal is rightfully considered one of the best stove materials. Its main advantages include:

Environmental safety. When heated, it does not emit harmful substances.
Resistance to temperature changes. An outdoor stove made of brick may begin to crumble after just a few years.
High thermal conductivity. A fireplace made of cast iron will warm up a room much faster than one built from other materials.
Durability. Cast iron is the leader among metals in terms of strength. Even steel stoves are less reliable.
Ease of use.
Fire safety.

A homemade cast iron structure will not turn out very beautiful, so it is recommended to cover it with brick or stone.

Preparation of materials and tools

To create such a miracle stove from a bathtub, you need to prepare:

angle grinder (grinder);
2–3 circles on metal with a thickness of at least 1 mm and a diameter of 12.5 cm;
electric drill;
metal drills with a diameter of 9, 11 mm;
grinding wheels;
files;
hammer;
level;
construction gun (for applying sealant);
plumb line;
putty knife;
Master OK.

Materials you will need:

iron or steel sheet 5 mm;
fireproof red brick;
grate;
sealant;
clay;
sand;
metal corner;
bolts with nuts, washers;
chimney pipe with a diameter of 12 cm.

Photo: the material is prepared, all that remains is to choose the purpose of the oven and get to work

When all the materials and tools have been collected, you can start cutting the container. For convenience, you can turn it upside down or lay it on its side.

Users often search:

You need to handle the grinder carefully so as not to damage the surface.

Before you start sawing the bathtub, there are several nuances to consider:

Marking will simplify cutting the product.
The first layer of enamel is removed strictly along the drawn line. This will help prevent chipping along the edges.
The next step is to cut the cast iron. Do this gradually, in small pieces of about 10 cm, so as not to overheat the grinder.
When the bathtub has already been cut in half, supports are placed under each part. They will prevent parts from falling and damaging the tool or material.

According to reviews from experienced builders, it is better to work with a grinding machine at an angle. This way the enamel will not begin to peel off and all cuts will turn out smooth without burrs.

If you use a high-quality grinder, processing cast iron will take no more than 1 hour.

For a barbecue you will need two halves of the bath: one part will serve as a fuel loading chamber, the other is necessary for cooking. For a sauna stove or fireplace, one half will be enough.

Step-by-step creation of a stove from a bathtub

As for the construction of the foundation, its type depends on the total weight of the furnace:

For a structure over 700 kg, a monolithic or strip base with a depth of 50 cm should be installed. Formwork is constructed around the perimeter of the pit and covered with a layer of crushed stone or broken brick. It gets compacted. Filled with concrete.
For small ovens, a brick foundation is sufficient. It is recommended to purchase cement grade no lower than M300. The bricks are placed edgewise and fastened together with mortar.

Now let's look at detailed instructions for making each of the stoves for different purposes.

For the bath

To create the necessary conditions in the steam room, the design must meet the following requirements:

have high thermal power;
regulate convection currents;
produce sufficient steam.

The procedure for constructing a sauna stove:

It is important to note that the foundation must have a protrusion towards the borders of the furnace of at least 50 cm, and 1–1.5 m of free space must be left in front of the firebox.

An interesting idea to make a sauna stove from both halves of the bathtub. The second part will be needed as an extension for heating water, or you can use it to build a Russian heater.

For cooking

You can’t do without a barbecue or grill at your summer cottage. And the opportunity to bake delicious bread and fry meat in the fresh air forces owners to install small outdoor ovens on the premises.

Here is a description of how to build a barbecue step by step from the bath.

The sequence of work is as follows:

Some craftsmen leave the barbecue in this condition, but to keep your stove looking beautiful, you should still do the exterior finishing.

There are several options:

Whitewashing the clay part.
Masonry of a whole ceramic tile or its pieces.
Surface finishing with natural stone, pre-cut into pieces 10 mm thick.

The materials are attached to the furnace with heat-resistant adhesives.

A good solution is to install a chimney to the stove through the bathtub drain hole, widening it in advance, and only then weld it to a steel sheet.

For heating

In the country, it is easy to build a fireplace from half a bath. He can be:

Built into the wall. Suitable if the house has brick walls. Significantly saves free space.
Reclined (half-open). The firebox is located at a considerable distance from the wall. This fireplace does not require a separate foundation; it is mounted directly into the floor. It has good traction and a built-in ash pan.

When building a semi-open fireplace, the following recommendations should be taken into account:

Cement mortar up to 15 mm thick is poured under the base.
A metal mesh is laid on top.
A layer of waterproofing is applied.
Insulation such as asbestos cardboard is laid.
A pedestal for the firebox is being built. Brick or aerated concrete will do. The binder mixture is cement mortar or heat-resistant glue.
The structure is plastered. You can decorate it with stone or ceramic tiles.
A gap is left between the lining and the firebox for the convection heating system.
The chimney pipe is mounted in the hole made and discharged through the ceilings and roof. Often done in the shape of a sleeve.
The inside of the firebox and chimney are lined with heat-insulating, non-combustible material.
The lower part of the fireplace is being finished.
The product is closed on the side and top with a frame made of aluminum corners connected with self-tapping screws.
The frame is covered with plasterboard.
Holes are made in the cladding for air ventilation.

When installing a chimney, it is important to take into account that with a pipe height of up to 5 m, the deflection angle is 45 0, over 5 m - no more than 20 0.

For waste disposal

An unusual solution to build a waste incinerator from an old bathtub.

The principle of its construction is similar to a street barbecue.

Layout of the stove on a brick base

An alternative is to remodel an old heater by removing all parts except the grate and body. Part of the cast iron is welded to the base from the inside to strengthen the structure.

You can load waste into this fire bin directly from the top. When burning, the stove should be covered with another part of the bath so that the smoke does not disperse throughout the entire area.

So you shouldn’t rush to get rid of things that are out of order or out of shape. In skillful hands, even an old bathtub will get a second life and become a functional stove that will last for many years.