Do-it-yourself manual drill for poles. Hand drill for poles. Model with removable cutters

25.06.2017

Surely, land owners at least once in their lives had to deal with the need to dig holes that are required to install poles, supports, arches and other details involved in the arrangement of the exterior. Narrow holes and wells sometimes have to be made in awkward places or difficult soils. An ordinary shovel cannot cope with digging deep holes, so the owner has to rent a drill or involve a specialist who manages the tool.

garden drill - useful tool for a summer resident. It is lightweight and compact, easy to transport and easy to use. Made of solid metals, it splits small stones and plant roots hidden in the bowels of the earth. For digging holes, it is used by substituting it to the right place and making several rotational movements by analogy with a kitchen corkscrew.

Design Description

The main purpose of the drill is to dig wells to a depth column foundation. The cutting part makes holes, the shape of which can be different:

in the form of a screw;
Two-bladed;
Helical;
In the form of half-disk;
Tiered;
Removable or solid welded.

Some models start with small blades and gradually increase to the largest at the top. But factory-made drills do not always turn out to be functional in practice, because the tool may not penetrate the ground to the desired depth, or its nozzles may not match the expected diameter of the hole. And although the price of the finished product is low, it makes sense to learn how to make it yourself. The technology for creating a drill at home is simple and not expensive, it is only important to decide on the configuration of the model.

Let's look at a few differences different designs responsible for the functionality of the tool:

Baking powder. The part looks like a pair of inclined planes or a screw. In the second case, a spiral-shaped knife is located on the bar.
Soil receiver. Soil accumulates in the so-called storage. The detail facilitates work when drilling holes with a diameter of 35 cm.
Plow-former of the lower extended zone. The use of the structure contributes to the strengthening of the columnar foundation, which is important in the construction of massive structures.

The bolted connection of the drill fastens the auger part with the handle. The length of the assembled product is slightly more than 1 m, due to which the tool makes holes up to 700 mm. If it is required to dig holes of greater depth, the structure can be supplemented with a connecting tube (500 mm). The element looks like a part with a bolt and nut located at the ends of the pipe.

Manufacturing and selection of components

In the manufacture of a manual drill for digging holes for poles with your own hands, there are usually no difficulties. But in the production process, the master will need parts and materials from which the finished product is obtained.

Parts list

Bolt and nut M20
2 discs with a diameter of 100 and 150 mm
Tip and drill with a diameter of 20 mm
Three pieces of pipe: two - 500 mm each and one piece 400 mm. Extra options: wall thickness - 3.5 mm, outer diameter - 40 mm.

Necessary materials

Requirement for wall thickness iron pipes(3.5 mm) is due to the hardening of the product and the ability to work in hard ground. Disks for work are allowed to be removed from circular saw or do it yourself. They will need metal sheets with a minimum thickness of 3 mm.

Of the tools useful:

Hammer and grinder
Welding technology
locksmith set
Electric drill with drills for metal
Circle sharpener for cutting elements.

In the absence of a tip with a drill, they are replaced with a drill with a conical shank. The diameter must match the screw part. To avoid injury in home production use soft bicycle handles.

Step-by-step description of tool manufacturing

On the segment sheet metal draw a circle and mark its center
there will be a blade. Cut out the workpiece with a grinder. Then a cut line is applied to it (it must pass along the diameter line) and a cutout that matches the size of the collar circumference. The resulting disc is divided in two and the grinder cuts holes for the knobs.
At the end of the blank pipe intended for the manufacture of a collar, with the help of a grinder, 4 longitudinal cuts are made about 3–4 cm long. Then a point is formed from them, armed with a hammer and collecting the cuts at the center of the pipe. Next, the tip is processed by welding so that the collar pipe is subsequently not filled with earth.
The halves of the disk are welded with a crank, maintaining a distance between them of 5 cm and an angle to the plane of rotation with a value of 20 °.
The extension pipe is equipped with a handle. The part is welded perpendicularly, achieving the likeness of the letter "T", and strengthened with a metal "scarf". The workpiece is inserted into the pipe-knob and done through hole, through which the parts will be connected with a stud with lambs. Several holes are drilled in the extension - they will help adjust the length of the collar.
The work is completed by sharpening the blades. The cutting edge on the cutters is processed so that the tip “looks” down during rotation.

Protective coating

To prevent corrosion processes, all parts of a hand drill made for mounting poles with your own hands must be cleaned with sandpaper, treated with a phosphating solution and a primer. After that, the product can be painted.

Already in the process of operation after each work, the drill must be disassembled for cleaning bolted connections from dust and coat with waterproof grease. Do not be lazy - careful tool care is the prevention of jamming of bolted joints and a guarantee of long-term operation of the entire structure.

Tool Performance Techniques

In the process of work, builders have to deal with an abundance of roots of various vegetation that lie in the ground. The sharply sharpened edges of the knives facilitate the operation of the drill. Also, for the convenience of work on the sloping part of each blade, you can cut teeth or round off the cutting zone.

Ways to improve the design

The first "highlight" will be the manufacture of a drill with interchangeable cutters. Thanks to this tool, the master will be able to dig holes of any diameter. In addition to the manufacture of spare elements, it is important to provide a method for attaching them to the collar. It is easiest to connect products using two welded iron plates. With respect to the plane of rotation, welding is carried out at an angle of 20°.

Holes for bolts are drilled in the blades and mounting plates - 2 pcs each. on every detail. The cutters are screwed with M6 bolts with washers and nuts. To prevent the bolts from interfering with drilling, they are inserted with the thread up.

The second way to improve the drill is to enhance the functionality of the lower end of the collar. A narrow plate of 10 x 2 cm is cut out of sheet iron and turned into a cone with a grinder, giving it the appearance of a point. Cuts are not made at the end of the collar - a turned plate is inserted into this part of the product, welded and flattened. The result should look like a spike.

In a different way, the peak is made like this. The plate is cut off longer (about 17 cm), heated and rolled into an auger (like a corkscrew). Work on the creation of peaks continues, as in the first version.

A drill can be used under the auger suitable diameter that handles wood or metal. An unusual tool easily penetrates into the ground and drills it to the desired depth without problems.

The third tip is useful for builders working on compacted deep soil layers. If a small flat cutter is welded between the peak and the cutter, using the device it will be possible to perform preliminary loosening of the soil and additional centering during drilling. This part requires 2 8 x 3 cm plates to make. It speeds up the workflow.

Fourth: you can get friezes from discs from a grinder designed for stone processing. The circles are cut along the radius line and the central hole is expanded, fitting the hole to the diameter of the collar. Its extension with breeding ends in different sides gives the appearance of a screw. It remains only to weld it, as described above.

Making a cutter is easily feasible from a circular saw blade. The sharp teeth of the upgraded model will easily cut through the unruly roots of even the toughest vegetation. What you choose for yourself, decide for yourself. In general, the manufacture of a drill is not a difficult matter and requires minimal cost. The whole process takes about 2 hours.

DIY hand drill

The operation of a universal hand drill will be more productive if the auger blades are removable, and not tightly mated to the rack. And if you supplement the product with round blades of various sizes and configurations, the drill will become a truly multifunctional device that will be useful to a person in many household chores.

Experienced craftsmen say that blades with a diameter of 9 and 12 cm do an excellent job of drilling holes for water wells and seedlings, arranging holes for the construction of greenhouses and for installing tunnels for laying underground utilities. Large knives with a diameter of 17 and 25 cm will serve rational decision for those who fill the supports of fences and small buildings, suits compost pits and plants plants with a powerful rhizome, builds wells and surrounds the territory with a fence.

Step by step photo guide:

To maintain a given angle of inclination of the lever, which will serve as a handle, it is recommended to use a welding clamp in the process of connecting the part to the rack. The handle must be attached to the rack itself at a right angle.

And one last tip: on the eve of drilling, loosen with a shovel upper layer soil. Then the tool will more easily enter the ground. We hope our recommendations will help you without extra effort to make a functional drill that will last more than one year and will bring many benefits to the household.

Sometimes, during earthworks, it is required to dig holes that are needed to install piles, poles and different kind supports. Often this is required to be done in hard soils, and in this case it is too long and hard to work with a shovel, especially if the wells are required deep and in large numbers.

In this situation, you can use a drill to earthworks, moreover, you can completely do without calling specialists, but do everything yourself. If you wish, you can make a garden drill with your own hands. Drawings of this tool are available, some of them are very easy to put into practice. But first you need to understand the design and varieties of this device in order to have an idea of what kind of mechanism it is, and what type of drill is more suitable for individual work.

The earth drill is construction tool, main task which is digging holes deep necessary foundation. The principle of operation is similar to a bottle corkscrew - first the tool is screwed into the ground to the desired depth, and then pulled back to the surface along with the ground dragged along by the blades of the drill. As a result of this operation, a hole is formed with regular round edges, suitable for installing poles and supports. The most popular and frequently used types of drill include:

There is also a classification by engine type: gasoline and electric. The advantage of powered drills is that that they have a high drilling speed, require less physical activity, and it is possible to change nozzles. Motorized tools are available in two versions:

Manual. This type is more compact, but less powerful and has more weight.
Wheeled. Larger dimensions compared to manual, but such a tool is more powerful.

The petrol drill should be warmed up before idling. This is not required for an electric motor. The disadvantage of any powered tool is that they require a source of electricity or fuel to operate.

Types of drills not used in gardening

The impact drill is used exclusively in the construction and drilling of deep wells. It is presented in the form of a pipe fixed with rafters. With the help of a percussion mechanism, the pipe is set in motion, breaks through the ground and loosens the soil.

crown mechanism, which is a pipe with a toothed crown fixed on the base. Requires auxiliary equipment, therefore it is not used in amateur land works.

DIY manufacturing

If necessary, this tool can be made independently with some mandatory tools. . For work you will need a grinder, welding machine, locksmith set, electric drill and grinding wheel. The most important thing in making a homemade drill is to make a fairly comfortable handle and good blades, which can be based on circular saw blades.

Homemade disc drill

This design is the simplest self-manufacturing and requires a minimum amount of materials.

For work you will need:

Metal fittings for a rod with a length of 1.5 meters.
A piece of pipe for the handle.
Blade circular disk.
A thick drill that will act as a tip.

Having selected the desired diameter of the disc, it should be cut in half, and it is advisable to grind off the existing cloves to avoid cuts during work. The handle is welded to the top of the rod, as a result of which the structure takes on a T-shape. A drill is welded to the opposite part of the rod in the center, and blades are welded at some distance from it. It is important to observe the angle of inclination between the blades at 25 degrees.

You can make a disc drill with replaceable blades, for which, instead of the blades themselves, you need to weld metal landing pads at the same angle and come up with a way to fix the discs. Bolted mounting is ideal, for which a hole is drilled in the site to the size of the required bolt and the desired thread is cut.

This modification allows you to select the required diameter of the working discs as the work is being done.

Screw tool

The design of the auger is more difficult to manufacture and use, but it is easier to dig narrow diameter holes with it. To make it you will need the same materials as for a disk drill, but instead of a cutting wheel, it is better to take ordinary round ones for a circular metal discs in the amount of several pieces of equal thickness and diameter.

First, the rod, handle and drill are welded together as described above in the manufacture of a disk drill. Then an auger should be made from the existing disks.

To do this, in the center of each of the available disks, drill a hole with a diameter equal to the diameter rod. After that, a small sector is cut out of a part of each disk, and the disks are welded in such a way that a spiral structure is obtained.

The rod is installed inside the resulting spiral, which is then stretched along the rod. Upon receipt required form and the height of the auger, it is welded to the rod, starting from the upper and lower discs.

Shovel drill

To work with soft loose soils, you can make a garden drill from a shovel. To do this, cut lines are marked on the shovel blade according to the existing drawing, then the canvas is cut according to the markings with a grinder, and the resulting edges are bent in different directions. Moreover, the ends of the canvas are slightly curved upwards.

The resulting design has a small weight and dimensions, resembles a brace and is ideal for planting plants on land plot.

Rules for care during operation

Regardless of whether it is a mechanical drill or a manual drill, whether it is purchased or homemade, this tool requires mandatory care. This allows you to extend the life of its operation and prevent possible breakdowns during work:

Hand drill is an indispensable tool for construction on the land. With it, you can drill holes under the foundation of arbors, supporting pillars for a fence. In addition, the drill will also make it easier to replant shrubs and trees, which will make the gardener's job easier.

This tool does not require special skills in handling, and its use is not difficult. The design is not very complicated, which allows you to make a drill with your own hands in the presence of a welding machine, grinder and drill. Self-creation The tool will save money and will eventually give exactly the mechanism that is required for individual work.

How to make homemade drill for fence posts

Homestead owners or summer cottages often faced with the need to dig a deep narrow hole for the installation of pillars, for example, for a new fence, gazebo, supports for a vertical garden, a flower bed, vine trellises or arches, etc.

Such narrow holes, wells sometimes need to be done in the most inconvenient places. And such holes, especially deep ones, cannot be dug with just a shovel, here you need a special device - a drill.

Advantages of this device

The garden earth drill is earth drilling tool, which is simply necessary in the household of a summer resident. It is convenient and easy to operate, helps to minimize the effort and time spent on solving the above tasks, it is very versatile: with replaceable blades of various diameters and configurations, its functions can be significantly expanded. This tool is able to replace several diggers armed with shovels.

To dig a hole with it, you just need to put it on the intended place and, leaning slightly, do rotational movements. To make it easier to imagine what a garden drill looks like, remember what a regular kitchen corkscrew looks like. And the principle of its operation is similar to the principle of the corkscrew.

Therefore, work with a drill does not require special training, physical strength, even a teenager, a woman or an elderly person can work with them.

This tool is lightweight and compact enough to be easily carried from place to place and perform work with it in hard-to-reach places on the small spaces. And finally, it should be noted the clear advantages of the drill when working on difficult ground. A drill made of hard metals is able to cut roots, split small stones that are found at depth.

Functionality

Now about what are the possibilities of this tool. Consider the option the simplest model drill for soil with an average density and with average physical capabilities of the worker. Under these conditions, a hole 1 m deep and 20 cm in diameter will be made in approximately 15 minutes. A well with a depth of 3 m and a diameter of 30 cm under the same conditions will take about 2-3 hours.

The maximum possible depth for best models of this tool - 15 m. Validity - at least 10 years (approximately 300 wells).

Types of Boers

Garden drills differ from each other in the form of the cutting part. The cutting elements are auger, helical(as in a corkscrew) and in the form of semi-discs, two-bladed(a kind of flat cutter). Cutting parts are removable and welded, they can be multi-tiered. Sometimes the drill starts with blades of smaller diameter with a gradual increase.

But all this applies to drills made in working conditions. They can be purchased at specialty stores. And although their cost is generally affordable (on average, about 1.5 thousand rubles), nevertheless, these costs are sometimes not very helpful. It should also be noted that factory-made drills do not always meet the requirements of a particular treated area. The tool may not be deep enough, or the tips may not be the correct hole diameter.

Self-manufacturing

In addition to being easy to operate, a garden auger is also fairly easy to make at home. For the owner, who is familiar with locksmith tools and knows how to use them, making it is not difficult. In this article, we will try to give recommendations for the manufacture of both the simplest drill and more advanced models. This will help you save on the purchase of the tool.

Let's start simple. For homemade the most suitable design is with a cutting part in the form of two semi-disks, blades or one disk - a flat cutter.

First of all, you need to make a drawing of the selected design, taking into account the size of the proposed recess in the ground, its diameter and depth. Wherein the diameter of the cutting element should be 5-7 mm larger than the future hole.

materials

It is necessary to prepare materials, namely:

a piece of durable sheet metal for making a cutter (blade),
a piece of pipe for a collar of suitable length,
a piece of a pipe of a smaller diameter (so that it is inserted into the first pipe) for the manufacture of a pipe - an extension,
a piece of metal rod for the handle,
threaded stud with lambs,
4 bolts with washers and nuts.

Tools

You will need:

welding machine,
Bulgarian,
a hammer,
electric drill with a set of drills for metal,
abrasive wheel for sharpening cutting elements,
standard tool kit.

Manufacturing process

Draw a circle on a piece of sheet metal desired diameter and mark its center. Using a grinder, cut out the blank of the future blade. Then put on the workpiece a line of cut (along the line of diameter) and a cut according to the size of the circle of the collar. Having cut the resulting disk in half along the diametral line, with a grinder we make cutouts for the collar on each half.
Take a blank pipe for making a collar and at one of its ends with a grinder make longitudinal cuts 3-4 cm long. There should be at least four of them. Then, using a hammer, bend the notches to the center of the pipe so that a kind of point is formed. Now it needs to be scalded with a welding machine so that the earth does not stuff into the pipe - the collar.
The next stage is welding both halves of the disk to the collar. It should be welded at a distance of approximately 5 cm from each other at an angle to the plane of rotation of approximately 20 degrees. Now one part of the drill is ready.
Weld the handle perpendicular to the extension pipe: you will get a part in the form of the letter “T”. For strength, the handle can be additionally strengthened with a metal "kerchief". Insert this T-shaped part into the pipe-knob and, having drilled a through hole, connect both parts with a stud with lambs. There may be several such holes in the extension pipe in order to adjust the total length of the collar as needed.
Bur is ready. It remains only to sharpen the blades. At the same time, it is important to take into account that cutting edge on cutters it is sharpened with the expectation that the tip is turned to the bottom, to the bottom of the future pit.

The following video demonstrates this process:

How can the tool be improved?

First, you can make a drill with interchangeable cutters. Then with its help it will be possible to drill wells of various diameters. To do this, it is necessary not only to make spare cutters of the appropriate sizes, but also to provide a method for attaching replaceable blades to the collar. The most straightforward method of fastening can be two welded plates from the same sheet metal, which will serve as mounting sites for the blades. They should also be welded at an angle of 20 degrees to the plane of rotation. In the blades and in the mounting plates, you need to drill holes for the bolts, 2 on each plate and, accordingly, on each blade. The cutters are fastened with ordinary bolts (M6) with washers and nuts. It should be noted that the bolts must be inserted with the thread up so that they do not interfere with the drilling process.
Secondly, you can make the lower end of the collar more sharp, and therefore more functional. To do this, cut a narrow plate from sheet metal about 10 cm long and about 2 cm wide. On one side, grind it with a grinder into a cone, making it in the form of a point. Instead of notches at the end of the collar, you just need to flatten this end, after inserting a turned plate there and scalding it with a welding machine. You get something like a spade. Also, as an option for such a peak, you can make the plate a little longer (15-17 cm) and, after heating it, roll it up like a small screw (remember, again, a corkscrew). For the rest, proceed as in the first option. Some craftsmen guessed as such an auger to weld a drill of the appropriate diameter for working on wood or metal. This greatly simplifies the drilling process. The drill itself goes into the ground like clockwork.
Thirdly, (this is suitable for especially dense deep soil layers) it is possible to weld a small flat cutter between the cutter and the peak for preliminary loosening of the soil. It is made of two plates 8x3 cm in size. In addition, such a device provides additional centering during drilling, which greatly speeds up this process.
Fourthly, for the manufacture of a cutter, you can use ready-made disks, for example, a disk from a grinder for working on stone. It does not even have to be cut in half, but only cut along the radius line and increase the hole in the center in accordance with the diameter of the collar. Then you can unbend it, spreading the edges of the notch in different directions, thereby forming a semblance of an auger. Then weld, as in previous cases. Highly good decision is the manufacture of a cutter from a disk from a circular saw. Its sharp teeth brilliantly crack down on the most stubborn tree roots encountered in the path of the drill. It is prepared in the same way as a disk from a grinder.

So, we have analyzed several options for making a garden drill at home. Agree, it is not very difficult for home craftsman. It remains only to choose the most acceptable option and make yourself this wonderful device, which is on long years makes it easier to work in the garden and in the country. And the production itself will take only about 2 hours of time.

Device Care

If you want your instrument to serve you faithfully for many years, do not forget about simple rules caring for him:

After manufacturing, it is desirable to cover it with an anti-corrosion liquid and paint it with metal paint.
After working with it, clean it from the remnants of the earth, each time checking the integrity of the blades.
All damage must be immediately eliminated, cover these places with anti-corrosion liquid.
Before starting drilling, it is advisable to slightly loosen the top layer of soil with a shovel to facilitate the initial entry of the drill.

Hand drills are used to perform many types of work and are among the most popular tools.

Their independent production is considered alternative decision to purchase such products.

This article will be devoted to the topic of making a garden drill with your own hands.

Big features in a small tool

Hand drills are considered necessary tools allowing to perform a wide range of works during construction, repair, landscape design, arrangement suburban area, garden, kitchen garden, soil research.

They allow drilling wells of the correct form in the ground, the same size and consist of several metal parts. With limited free Money making the right tool with your own hands is considered the best option.

Such a solution will allow planting trees, drilling shallow wells or wells, installing supports for installing arches and trellises, supports for the foundation, arranging cesspools, compost pits, and also making holes for the pillars of the building envelope without much difficulty.

The design of the tool for drilling holes in the ground

Features of the structural parts of the auger drill determine its varieties. These include:

auger with a cutting element;
rack or axle different diameter;
the handle is short, medium length.

The use of high-quality metal determines reliability, strength, long service life garden tool. Its working element may consist of several tiers of blades. Demountable design the drill provides an opportunity to increase the length of its trunk, to replace nozzles and handles.

Tools, materials for self-production

To make a homemade garden drill, you need to decide on its design and prepare the right tools, materials. Their list includes:

apparatus for making welding joints and turning equipment;
sheet steel of high strength, 3-5 mm thick and short, long pieces of metal pipes;
reinforcing rods with a diameter of 16 mm to 30 mm and a length of at least 1.6 m;
an emery or abrasive wheel, which makes it possible to grind the necessary elements;
powerful drill and drill bits for metal.

Advice: for the manufacture of cutting elements of the drill, instead of blanks from sheet steel, you can use circular saw blades.

Manufacturing steps

Making a homemade drilling fixture takes a lot of time compared to buying it. But at the same time, there will be an opportunity to gain practical skills and save money.

After preparation necessary materials, tools begin to manufacture a garden drill. The main steps include:

1. From sheet steel of increased strength cut out several round blanks different diameters for cutting parts of the drill. This solution makes it possible to make wells of the required width.

2. Holes are drilled in the center of the steel circles. Their diameter should be 1-1.5 mm greater than the thickness of the axis of the garden tool.

3. At the third stage, they start turning cylindrical parts with holes for bushings lathe subsequent threading. It must match the size of the bolts used to securely fasten the cutting elements to the drill stand.

4. On the working parts of the drill, using cutting wheel cut out small segments. The rest of the disk must be stretched with a twisting force and given the appearance of a screw.

5. The lower edge of the cutting element is sharpened at an angle of 45º - 60º. At this stage, the manufacture of the blade is completed.

6. At this stage, the lower part of the drill stand is cut, retreating 8 cm from its end. The depth of flat cuts should be 3mm. The work is done using an emery wheel.

7. To form the point of an earth drill, it is necessary to sharpen the lower end of the axis at an angle of 30º and make spiral grooves. If you weld a metal drill to the end of the stand, the tool will easily enter dry, hard soil.

Advice: the use of scrap as the axis of the drill will eliminate the stage of sharpening the lower end of the tool.

8. On the opposite end a garden drill is fixed with a removable handle. The use of a bushing will provide a rigid fixation of the part. Optionally, from segments metal pipe you can make special sections that allow you to increase the height of the rack. With their help, you can make holes of great depth.

9. At the final stage, the hand-made tool is covered anti-corrosion composition and paint for reliable protection from negative environmental factors.

Below, we suggest you watch a video on how to make a garden drill with your own hands:

The construction of a full-fledged columnar foundation is a difficult job that requires experience and professional tools. For drilling wells, you can use special equipment or make a drill yourself. This is especially true for large volumes of construction.

Drill design

drilling technology

The drill is designed to form wells in the ground to the depth of the installation of a columnar foundation. To do this, the design provides for a cutting part, which can have different shape. It is important that during rotation excavation and its accumulation in the receiver is carried out.

The first step is to choose the right configuration. There are several differences in the design, which will subsequently determine the functionality of the drill:

Baking powder. It can be in the form of two inclined planes or in the form of an auger - a spiral knife located on a bar.
The presence of a soil receiver. It is designed to collect the soil and its further removal after filling. Convenient for well formation large diameter from 35 cm.
Plow to form the lower extended zone in the soil. This is necessary to strengthen the future columnar foundation. The element is mandatory for the construction of buildings with a large mass.

The manufacture of the drill should begin with drawing up a drawing. It directly depends on the design requirements.

Types of Boers

One of the determining criteria is the shape of the cutting planes and their location on the bar. If the scope of work is relatively small, and the diameter of the well does not exceed 20 cm, an auger model can be made.

Such a design is relatively simple to manufacture, while there is wide selection cutting material. However, you should take into account the features of its application:

To remove the soil, it is necessary to remove the drill from the well each time.
It is not possible to form an extended area at the bottom of the foundation.
When filling the auger planes with soil, great efforts will be required to extract the soil.

An alternative to this model is a device with replaceable blades. They are installed on special mounting platforms located at an angle relative to each other.

Interchangeable knives

This form allows you to make wells of various diameters using the same drill. It should also be noted the minimum labor intensity of manufacturing and the possibility of installing new cutting parts to replace the failed ones. The disadvantages of the product with replaceable blades are the same as those of the screw model - low productivity and the possibility of drilling wells with a normalized diameter along the entire length.

These disadvantages do not have a drill, in which the cutting part is made in the form of a cylinder. Its lower part has two planes located at an angle. The soil is collected in a receiver that has sufficient capacity.

A feature is a mounted plow, which is designed to expand the diameter of the well at its base. It can be installed on all the models described above, but it is for this plow that it is most effective.

Self-manufacturing

After choosing the optimal scheme of the drill, you can proceed directly to its manufacture. For this you will need expendable materials, welding machine and cutting tool- or a hacksaw for metal.

The easiest manufacturing option is a scheme with replaceable blades. As their source material manufacturing, you can take discs for metal of various diameters - from 160 to 350 mm. Inner size mounting hole should be different. This is the main advantage of interchangeable blades.

For manufacturing you will need the following materials:

Barbell. It is made from a round pipe or square section. Mounting plates are welded to it for installing two halves of the disks, as well as a platform for attaching the handle.
Handle. It is made from the same pipe as the rod. For connection, it is best to weld the flange on 4 mounting bolts.
Disks. Their thickness must be at least 2.3 mm. This is necessary for the rigidity of the structure. They are cut into two halves, in each of which mounting holes are made for attaching to the plates on the bar.

The angle between the planes of the disk halves should be 30°. This will ensure optimal cutting of the soil layer without much effort. In the case of manufacturing a structure with a plow, it is recommended to order its cutting part separately or purchase a ready-made model.