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, a garden barbecue stove is made from old cast iron bathtubs. 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
For construction garden stove you will need:
- herself bath, it can be steel, but better - cast iron;
- Bulgarian;
- edged metal cutting circles;
- 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 preparations:
- 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 the holes for the chimney and cut them out.
- Weld the pipe into the partition and bring it out through top part.
- Do markings for fastenings.
Important! All work on sawing, grinding edges and trimming iron sheets must be carried out V safety glasses . And welding work is in 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 quite 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 are 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 touching 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 bottom part- combustion chamber - 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 snugly 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 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, For what rough work hide 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 the old one cast iron bath.
Advice. Work is carried out wearing glasses and thick clothes, covering the body.
It needs to be cut carefully, slowly. First, the enamel layer is cut along the marking line to prevent chipping. Then the cast iron is cut at an angle, making small slits, and not allowing the angle grinder to overheat. To prevent the disc from being pinched by the bath halves, the incision site is expanded wooden stick or brick.
Of all the homemade ones furnace devices and designs, a stove made from a cast iron bathtub is best suited for a home steam room. It cannot be said that a homemade heater made from an old cast iron is different exquisite design or very easy to maintain. You can’t argue with this, the homemade product doesn’t look as impressive as modern cast iron boilers, but it heats just as well, and in the construction of a bathhouse, a stove from a bathtub will cost an order of magnitude cheaper than a heater made from industrial cast iron.
Why build stoves from a bathtub
At first glance, the idea of a homemade cast iron heater looks quite unusual and strange. Why make a stove from a cast-iron bathtub with your own hands, if you can buy a factory-made steel boiler-stove. In fact, there is a rational grain in such an undertaking:
- Any metallurgist will confirm that thick-walled cast iron is ideal for arranging stoves, fireplaces, boilers of the most different designs and models;
- A good cast iron boiler costs fabulous money, while the construction of a stove from old bath it will take a maximum of a couple of thousand rubles and a few days of work;
- The semicircular cross-section and shape of the bathtub body are ideal for organizing the combustion process; there are no stagnant zones or sharp corners leading to local overheating of the bowl walls.
It is clear that the bowl body should not have cracks, metal chips or through corrosion. Due to poor machinability, brittleness and low ductility, cast iron is quite difficult to process, cut and weld in artisanal conditions garage or cottage. Therefore, in order to make a stove from a bathtub with your own hands, some practice will be required. At the very least, it will take quite a long time to select a mode to electric weld the cast-iron walls of a furnace.
Preparing a cast iron bathtub body for remodeling
The first stage of construction of a heater, regardless of its design and size, always begins with the removal of layers old paint, limescale, rust, all the debris that has accumulated on its surface over decades of use.
Some craftsmen recommend burning the body over wood for outdoors. The stove is placed on bricks and a small fire is lit. It will take a long time to heat the cast iron bowl, at least 2-3 hours, until the remaining contaminants burn out. In this way, it is possible to get rid of ingrained odors and at the same time “reveal” the surface from layers of lime and rust.
Cutting the cast iron bathtub body into blanks
Cutting cast iron, especially thin-walled, is quite difficult; the material itself is soft and has little plasticity; at the slightest overload or excess pressure may crack in the most inopportune place.
The body is cut in the following sequence:
- The cutting line is marked on the enamel surface;
- Drill with an electric drill and a thin drill through holes in corners, at break points of the marking line. On a rounded surface, drilling is performed every 4-5 cm;
- A metal hacksaw is passed along the markings made with a file or a sharpened blade in order to remove the enamel and prevent chipping of the coating;
- The last stage is the most critical. The cast iron bathtub is laid on a flat, absolutely flat surface and cut with a grinder along the marking line.
Advice! Usually, to avoid punctures, the body is cut along the contour, leaving several jumpers of a couple of centimeters connecting the two parts of the cast-iron bathtub.
The remains of the lintels are cut around the stone or removed with a grinder. It is worth remembering that when cutting cast iron, a huge amount of black metal dust is formed, which can eat into the skin of your hands like soot. Therefore, before you start making a stove from a cast iron bathtub with your own hands, you need to stock up on respirators and protective clothing.
Options for building a heater
For heating and heating a bath, you can use three types of stoves based on a cast-iron body from an old bath:
- Classic two-chamber stove with a closed firebox and heater;
- Fireplace stove with screen;
- A dome stove is the most complex and interesting to make with your own hands.
The decision about which type of cast iron bath stove to use in the steam room is made based on the size of the bath and the heating method. For example, cast iron fireplace stoves are great for a sauna, while a classic two-section stove can be used for heating a sauna room and even cooking.
Cast iron heater for a large steam room
Ideally, if you have experience and skills in working with metal, you can try to build a two-dome stove from an old bathtub, as in the video. IN in this case To make a real cast iron firebox, you will need a full-size bathtub, at least 180-190 cm long.
The basis of such a stove for a sauna made of a cast iron bath is a whole body with the short side or “back” cut off. The bowl is laid upside down on a base lined fireclay bricks on vermiculite cardboard. The design of the furnace does not provide for the presence of a blower or grate, the firewood is laid out in layers directly on a heat-resistant base.
According to the design and principle of operation, a cast iron stove made of large bath almost identical to the Russian stove. The chimney or pipe for removing combustion products is located directly at the loading window of the furnace. Firewood laid out in a woodpile burns in layers, and the hot combustion products go around the cast-iron roof of the stove along a horseshoe-shaped path and are removed through the chimney in the front part of the firebox.
For your information! To seal the joint between the body and the heat-resistant fireclay base, asbestos tapes, basalt cardboard and heat-resistant sealant are used.
The cast iron bathtub is lined with red brick walls. Remaining space between ceramic cladding and the cast iron body is filled with foam glass granules. The upper plane is covered with a metal sheet. Thanks to the enormous weight of the cast-iron body and brick shielding, the entire structure heats no worse than a real Russian stove. According to reviews from owners, heat and smoldering coals in a cast-iron combustion chamber are retained for 24 hours.
Simple dome stove
If we are talking about heating a room of up to 10 m2, then instead of an uneconomical fireplace, you can try to build a stove with your own hands from a single-dome cast-iron bathtub.
To make a firebox you will need half a standard length cast iron bath. As in the previous version, a massive body is used to arrange the combustion vault, but in this case the dimensions of the combustion chamber are half as large, which means it warms up faster.
The combustion chamber is also not provided with a grate, so you have to light such a stove using a small woodpile placed deep in the firebox. After the wood burns out and draft appears, you can fill the chamber to half its volume. This is no longer possible, cast iron is not a brick, so the roof of the stove may crack if overheated.
Fireplace stoves made from cast iron baths
Of course, it is not necessary to build a stove from a bathtub onto half the wall of the bathhouse. For a small steam room you can get by quite well small fireplace with loading the hearth from the dressing room.
For making it yourself small stove from the bathtub, you can adapt the third part of the body of a standard bowl or use one of the small-sized models with a length of 120-130 cm.
For your information! Cast iron bathtub bodies are ideal for making fireplaces, including fireplace stoves for saunas. If the chimney assembly technology and heater design are followed, such a stove will heat no worse than an industrial model.
The cut off rear part of the body is installed on a foundation made of heat-resistant bricks or blocks. The area for laying firewood must be covered with a stainless steel sheet, and the place for firewood must be pushed to the maximum depth inside the housing. During the combustion of fuel, hot gases will flow around the wall or former bottom of the cast iron bath, thereby increasing the efficiency of the furnace.
The depth of a standard cast-iron bathtub ranges from 40 to 60 cm, so the fireplace body can easily fit into the wall between the steam room and the dressing room. The back side of the body must be sheathed with metal, covered with a fine-mesh stainless steel mesh, and the backfill of the future heater can be laid.
The classic version of a cast iron bath stove
One of the most popular models is the two-section combustion chamber, made according to standard scheme with a firebox, a ash pan, an ash pit and a hot chamber, where, in fact, it is collected most of released heat.
The design of the oven consists of two sections - upper and lower, each of which is equipped with its own door. To make one stove, one full-size cast iron bath, 180 cm long, is consumed. The body is cut into two halves, which are connected to each other along the contour of the side. A sheet of steel with a thickness of at least 10 mm is laid between the sections. This sheet is welded steel pipe for the chimney, which is discharged through the location of the drain hole in the bottom of the cast-iron bath.
Features of furnace assembly
The two sections are connected to each other only mechanically, any attempt to weld or glue the cast iron halves will lead to destruction of the structure. To assemble, the furnace parts are placed on top of each other, holes for M10 bolts are drilled around the perimeter and connected using spring washers. The joint line between the steel sheet and the edge of the upper chamber is sealed with heat-resistant fireplace sealant.
In the bottom part of the lower compartment, which is also the firebox, a window for the grille is cut out. The grates are made from ordinary square pipe 20 mm thick. The front walls of the upper and lower chambers are cut out of sheet steel with a thickness of at least 5 mm; doors and latches are also made from it.
The design is very simple, the only thing you need to pay attention to when assembling a stove from a cast iron bath with your own hands is welding. All parts are hung and installed on the body by welding.
For your information! Welding work must only be carried out DC, specialized electrodes type UONI13-55.
The walls of a cast-iron bathtub are quite thick, so you will have to spend several hours choosing the appropriate operating mode. The seam looks like it was soldered, but the strength of such a connection is sufficient to withstand any thermal loads.
Conclusion
Making a stove from a cast iron bathtub is much easier than building a domed heater, fireplace or heating pad from brick. On average, it will take three full working days to make one full-fledged stove with brick and tile lining. The quality of operation of such a stove is practically in no way inferior to factory cast iron.
Cast iron – perfect material in order to do it yourself personal plot build a stove from the bathtub for cooking various dishes. But since cast iron can only be processed in industrial conditions, to make something from it with your own hands you should use ready-made cast iron products, for example, an old bathtub.
Advantages of cast iron:
- resistant to high temperatures;
- has a high heat capacity;
- not subject to corrosion.
Making a stove from a cast iron bathtub is quite difficult; this process requires attention and patience, since the bathtub itself is strong, but has a fragile structure.
Making from an old bathtub
A stove of this type is two interconnected halves of an old bathtub, located on top of each other. Therefore, you will first have to cut the bathtub in half.
Attention! Before you begin, remember that cast iron is a very fragile material, and any, even minor damage, can ruin it and make further processing impossible.
To divide the bathtub into two equal parts, it is best to use a grinder, drawing a cutting line in advance and accurately measuring the distance to the edges. Only after this can you carefully begin cutting the bathtub. Stock up on several cutting discs, as one may not be enough.
The most important thing to remember is: take your time. If you want to achieve an even and smooth cut edge, there is no need to rush anywhere.
Main stage: installation of the furnace
Most reliable way fix the stove and give it stability - . It must be massive enough to ensure the immobility of the entire structure.
After fixing the lower part of the furnace, a sheet of steel about 6-10 mm thick is placed on it.
But keep in mind that the speed at which the oven warms up will depend on its thickness. It is this that will serve as a separation between the firebox and the oven, as well as hob. You also need to make a hole in it for the chimney, which will be welded to it later.
Do-it-yourself stove from an old cast-iron bathtub limitless 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
The most commonly used cast iron bathtub classic type, which is divided into two equal parts. The free plane is closed from above steel sheet to create an enclosed 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!
←Previous article Next article →After repairing and replacing an old bathtub with a new one, it often happens that you don’t have the courage to throw out another good-quality cast-iron product. But what to do with it next? People who have a dacha usually take out things that have become unnecessary to their suburban area, doing so with the expectation that they will definitely find some use in the future. We will tell you how to make a sauna stove from an old cast iron bathtub.
Cast iron bathtub, which had to be replaced with a more modern version, may no longer look very fresh in appearance. But it still remains a strong and durable container of a fairly large volume, which you want to somehow adapt for your household needs.
In the countryside, a cast iron bathtub can be used for many purposes. Most often in the countryside, a bathtub is used as a reservoir for water used for irrigation, or as a container for preparing compost. But there are other ideas. For example, from a bathtub you can make an original garden furniture or build a small artificial pond, which will become a real decoration of the site. And here a lot depends on the imagination of the dacha owner. And looking at photos of options that have already been implemented will help you navigate the situation and find something extraordinary for yourself. But you can also make a stove from a cast-iron bathtub, because they are quite expensive in the store. Cast iron is a perfectly suitable material for this purpose, which differs:
- high strength;
- good thermal conductivity;
- resistance to high temperatures;
- unpretentiousness in operation.
Decorated cast iron bathtub for collecting water in the country Of course, all cast iron products, despite their strength, are quite fragile. Therefore, you need to handle them carefully and avoid applying unnecessary mechanical forces to them. But still, an old bathtub will make a good stove structure. From it you can make one of several options for stoves for your summer cottage:
- street garden;
- fireplace for a country house;
- for a bath.
All of these options are quite doable with your own hands, and watching a video on this topic will help you better understand the process of actions that will be required for self-construction ovens. The bath itself will have to be cut into pieces. But cutting cast iron is not an easy task, requiring certain skills, effort and time.
How to properly cut a cast iron bathtub?
This operation must be approached with full responsibility. You need to act very carefully so as not to damage the cast iron product. For cutting you will need a grinder and several metal discs. If possible, it is better to carry out work not indoors, but outdoors, doing it in a respirator, safety glasses and construction gloves. The following sequence of actions must be followed:
- First of all, the future section is marked;
Sawing the bathtub carefully to avoid chipping - then, along the entire intended line, a layer of enamel covering the cast iron base bathtubs to avoid chipping along the edges;
- after this, they begin to saw the cast iron itself with cuts of 10-12 cm, taking breaks when the tool overheats;
- Having cut about half of the bathtub, you need to put supports under each of the parts, otherwise at the end of the work they may close and damage the tool.
Advice. It is advisable to cut the cast iron base at an angle. In this case, as a result of the reverse motion of the disc, the enamel will not peel off, and the cut itself will be smooth. WITH good tool With your hands, the job of cutting a cast iron bathtub into pieces can be done in about an hour.
A stove for a bath from a cast iron bath: how to make it yourself?
Building a sauna stove is much more difficult than installing an ordinary garden stove on a site. After all, it must be not only effective, but also safe. Therefore, you need to take a responsible approach to installing a stove indoors. And to quickly navigate the process necessary actions, you can look at the photo or watch the corresponding video material.
Attention! The construction of a sauna or any other stove requires compliance with the rules fire safety. To properly equip it, you need to have at least minimal knowledge and experience. It is better, even before starting work, to first consult with a specialist on this issue, finding out all the subtleties and nuances.
The stove structure in the bathhouse must meet the following parameters:
- sufficient thermal power with the possibility of changing it;
- ability to accumulate heat and produce steam;
- the ability to regulate convection currents.
A cast iron bath is suitable for building a stove. standard sizes After cutting the bathtub, you can begin building the stove structure. In this case, you can use only one half of the cast iron container for the combustion chamber equipment. But they do sauna stoves and a two-piece bath. The second half can be used to build a heater or to add a compartment for heating water.
Those who love to make things with their own hands can build such an unusual sauna stove on their own. To do this you need:
- Pour the foundation for the furnace structure from concrete mortar with or without filler. You can use, for example, broken brick as a filler.
- Place half of the cut bathtub on the foundation with the curved part up. With a cut, the cast iron container must be built into the wall with removal to another room from where the furnace will be fired. The hole is blocked on this side brick wall and install a combustion and blower door in it.
- Around the installed half of the bathtub, at a distance of about 10 cm, red brick walls are also erected, equal in height to the cast-iron container. The resulting space is filled with stones, which, when heated, will heat up, then giving off heat to the steam room.
Construction of the furnace A fairly simple sauna stove can be built in two tiers. Heat will accumulate in the upper chamber. The principle of operation is this: gas, passing through the bath, warms up the stones, goes to opposite side, then goes down, and then up, after which it exits the pipe.
This non-standard solution, like a sauna stove from an old bathtub, is not only original, but also quite simple. Its construction does not require the use of any special materials. Furnace design, made independently, will last as long as a purchased product. In addition, this option requires a significantly smaller investment than purchasing a ready-made stove.
Bath stove: video
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