When building a house and arranging a site, it is often necessary to do round holes in the ground. They are needed when constructing a fence - for installing poles, when building gazebos, installing arches and other light utility structures. The same holes, but of a larger diameter and depth, are required when constructing pile foundation. These holes are made with a motorized or hand drill. There are plenty of them in stores, but many people prefer homemade ones: they are often more productive and reliable than factory-made products. In addition, you can make a drill with your own hands of any design, and there are many of them.
There are three main designs of earth drills:
- Garden. Usually these are two semicircular blades welded at an angle to one another. A hand drill of this design is used to organize holes for planting plants, which is why it is called “garden”. But the same tool is used to make holes when installing posts for fences, gazebos and other light buildings.
An example of a homemade earthen garden auger
The auger drill is distinguished by spirally wound several turns of the spiral
Folding blade - features of the TISE pile drill
Garden gardeners that are easier to make earth drills. Depending on the type of soil on which drilling is carried out, their design is slightly modified. This is the beauty of homemade drills - they can be “sharpened” to specific conditions and it’s not just about the size - the blades can be made removable, bolted on, but also about the design features. Yes, ordinary drills in the store are inexpensive, but they are “universal”. They work well on “light” soils.” On loams, clays, marl, etc. they are ineffective.
A garden drill is the simplest, but efficient design. It consists of:
- Cutting part. It usually consists of two steel semicircles with sharpened edges. The diameter of the blades is selected depending on the diameter of the holes that need to be drilled. For convenience, the blades can be made removable - bolted.
The post drill can be equipped with a prefabricated rod
This is a basic design, and there are many modifications to it. But let's first talk about what an earth drill can be made from.
As already mentioned, the rod is most often made from a round or square pipe. Diameter - from 3/4′ to 1.5′, profiled pipe can be taken from 20*20 mm to 35*35 mm.
Blade knives can be made from:
- sheet steel with a thickness of 4 mm;
- saw blade for an angle grinder of suitable diameter.
Earth drill with blades made from a saw blade for an angle grinder
It is easier to make blades from a saw blade. In this case, the cutting edges are already ready. It will be possible to further sharpen the side edges to make the soil easier to cut.
The peak drill is made from different materials- there are a lot of her designs. They just make a sharpened rod. Then you need a piece of rod large diameter. The second option is to make something like a drill from the steel strip. And yet - a combination of these two.
And finally - about the pen. It is more convenient if it is made from round pipe. Its diameter can be selected according to the circumference of the palms. The main requirement is that you should be comfortable.
First of all, you need to decide whether you are making a drill with your own hands with removable or stationary blades. If the blades are removable, weld shelves made of thick steel at one end of the rod. The shelves are made at an angle - so that the planes of the knives are separated at an angle of 25-30°.
After the shelves are welded, two or three holes are made in them for fasteners. Then the same holes will need to be made in the blades, and installed on bolts of substantial diameter.
One rod can have several sets of cutting blades - for holes of different diameters
You will have to cut holes in the center of the disks themselves so that they fit more tightly to the rod, but this operation is also required for the monolithic version - with welded blades.
If you are going to make the blades from sheet steel, cut out a template from paper and use it to create a circle of steel. Drill a hole in the center - you will need to insert and weld a rod into it. Circle or square - depending on the chosen rod. The hole dimensions are slightly larger than the dimensions of the rod.
Manual drill with one turn
The edges should also be separated by 25-30 degrees. In this case, drilling efficiency will be maximum. If you work on dense soils (clay, loams with a predominance of clay), the blades may collapse under load. To avoid this, stops are added from a corner or a thick strip of steel.
Strengthening a hand drill for drilling wells in dense soils
The blades bend due to the fact that unhardened steel is used, but it is almost impossible to find it in the sheet, and even if it is possible, it is unlikely to be bent.
If you have an old saw blade of suitable diameter, you have found almost perfect option. They use hardened steel, which is elastic and durable. But such a disk cannot be bent, so it is sawed in half and these halves are placed at the required angle.
The disc is sawn in half
Such a homemade drill for earthworks shows quite high performance. Even used wheels have a well-ground edge. And to make drilling even easier, they also sharpen the drill on the sides with their own hands.
In dense soils, it can be difficult to cut the soil with large blades. In this case, several blades are welded onto the rod. different sizes. From below, near the peak, the smallest ones are welded; above, retreating a few centimeters, the large ones are welded. There can be three such tiers, maximum four. All cutting part should not be more than 50 cm, otherwise it is physically very difficult to work.
Cutting blades can be arranged in several tiers
If a drill is needed for shallow holes - for installing poles, etc., then this design is optimal - it is relatively light in weight and easy to work with. The working process is as follows: they lowered it into the hole, turned it several times, pulled it out, and poured out the soil stuck between the blades. But if you need to drill deep holes, you can’t drag it from the depths. a large number of you'll be tormented by the soil. For such cases, a box for collecting soil is welded above the blades.
Homemade drill with earth receiver suitable for installing poles and piles
And all these are hand-made drills. All of them are highly efficient - it’s much easier to work than store-bought ones.
Due to the large number of turns, an auger auger creates significant resistance, that is, it is much more difficult to work with it than with a garden auger. But augers are used mainly in the presence of a mechanized drive - when making a drill for wells great depth- for water, installation of underground probes for heat pump and so on.
This is what an auger drill looks like
To make a homemade auger drill, you will need several metal disks. The number of disks is equal to the number of turns. The disks are cut identically, a hole is cut in them in the center for the rod, as well as an identical sector - so that they can be welded.
A sector is marked in the rings and cut out
The discs are welded on one side, then, slightly stretching the resulting accordion, the seam is welded on the other side. Rings are welded on the outer disks. The welded discs are placed on the rod, the lower edge is welded.
In the author's version, the TISE drill is a blade with an earth receiver and a folding wider blade, which forms an expansion at the bottom of the pile. But working with such a projectile is inconvenient - the folding knife gets in the way. Therefore, in some designs it is made removable, but in general, it is recommended to drill the holes themselves with an ordinary garden drill, and for expansion, make a separate folding knife with an earth receiver. This makes the work easier and faster.
Do-it-yourself drill for TISE piles - one of the options
A cut-off shovel serves as a knife, and the land receiver is made from a herring can. The knife is fixed movably; when lowered into the pit, it is pulled up by a nylon cable tied to the end. Having reached the bottom, the cable is weakened, the blade begins to trim the sides of the hole, forming the necessary expansion.
The photo below shows the second option. homemade drill for TISE piles. The design is more complex, but also more effective. The plow blade is made from a piece of spring, sharpened and welded to folding design on bolted connections.
More complex design
The dredger is made from an old propane tank. The collection of soil occurs from below, which is why the receiver is made with a rounded bottom. It has two holes, their edges are sharpened.
This projectile works well even on dense clay. True, to reduce friction, the well must be constantly moistened with water.
A self-made drill is good because its design is “tailored” to its owner. During the manufacturing process, everyone makes their own changes, then many more refine the product. But it can be difficult to do without basic drawings. This engraving contains several drawings with the sizes of various drills. As you understand, the dimensions are arbitrary; they can and should be changed, adjusting them to the size of the required wells.
There is no point in making a serious structure for planting plants. In this case you can do garden auger from a shovel. Choose a high-quality shovel made of good steel, apply markings as shown in the drawing. According to the markings, you will need to cut out two small fragments and saw the lower part in the middle to a depth of 30 cm (pictured).
If the ground is soft, the conventional design does not work very well. For such cases, there is a special drill with an extended cutting part. It is a kind of glass with slits on the sides. The cuts are equipped cutting edges. They are best made from well-hardened steel.
Drill for soft soils
This drawing shows interesting design handles - it can be rearranged as the length of the bar increases.
Both of these units work well, but the garden one has to be taken out often, and the auger one is harder to rotate. Choose according to your own preferences.
Auger and garden auger for soil of different densities
Detailed projection drawing of an auger drill
Garden auger drawing
(Last Updated On: 10/03/2017)
Drill on homestead farms and on construction site always in demand, because it allows you to make smooth and deep holes for installing fences, formwork, etc. At the same time, it is not at all necessary to buy a drill in a store, paying a lot of money for it; you can make a drill for poles with your own hands, saving money and practicing your engineering ingenuity. The pole drill has a very simple configuration, so self-production should not cause any serious difficulties.
Do-it-yourself pole drill - necessary elements
In order to start making a homemade drill, you must first learn which components it consists. The design of the drill includes the following elements:
- cutter - the main working tool of the drill, responsible for drilling a hole;
- rod – metal composite design, increasing as the drill is immersed in the ground;
- handle for rotating the drill.
- welding machine– a simple household appliance will be quite sufficient;
- lathe - here it is better to find a familiar mechanic who can quickly and efficiently process the workpiece;
- motor with emery for grinding parts;
- powerful electric drill with a set of drills for working with metal;
- Sheet steel;
- steel bar;
- a piece of pipe for making a storage tank.
To make a drill for poles with your own hands, you can do without a drawing. You can sketch out a drill diagram and make it by eye.
We make a drill for poles with our own hands step by step
The first thing you need to do is cut steel sheet. Circles of various diameters are cut from it, which will be used to make cutters. Different diameters are needed to make the drill more versatile. Workpieces should be cut so that their diameter is 5 mm larger than the required hole size. Then all the workpieces need to be drilled in the center. The hole should be slightly larger in diameter than the rod that will run through the center.
Now you need to contact a specialist working at lathe– steel bushings with perforation in the center, in which threads are cut, are required. It is not recommended to make these bushings yourself using improvised tools - they are necessary for fastening cutting elements to the central rod, so the performance and reliability of the drill will largely depend on their strength.
Now let's turn round blanks into spiral shapes. To do this, you need to cut a small segment in the workpiece, then secure the ends in a vice and stretch them to the sides. Due to stretching, the workpiece will stretch into a spiral. You should not be too zealous - firstly, the overstretched workpiece becomes too thin, and secondly, the metal loses its strength. After stretching, you need to sharpen the outer edge of the resulting spiral so that it cuts the ground easier and more efficiently.
Now we prepare the rod for attaching the cutters. To do this, shallow (about 3 mm) cuts are made on the rod at a distance of approximately 8 cm from the edge using sandpaper. You also need to sharpen the end of the rod so that it fits better into the ground, and cut a shallow spiral on it. And to make it easier to work with dense soil, you can weld a metal drill to the end of the rod - this will be an effective and reliable solution.
The drill rod can be made from pipe sections, providing for the possibility of fastening them together. You need to attach a handle to the last segment to rotate the drill. After completing all the procedures, you should paint the drill with a special paint that will protect the post drill from corrosion.
Digging holes for posts with your own hands using a shovel is a labor-intensive and time-consuming process. This may take more than one day if the decision is made to build a fence. Way out of this difficult situation- do everything using a garden drill. The device is simple and does not require the use of energy, that is, it is clean hand tool. It's easy to work with, no big effort required. As practice shows, in 15 minutes you can dig a hole in the ground with a diameter of 20 cm and a depth of one meter. That is, in just a couple of hours you can completely prepare places for installing poles.
Today manufacturers garden tools offer a fairly wide range of hand drills. They cost differently, but if the work they do is one-time, then maybe it’s worth making it yourself. How difficult is this creative process? Basically, for anyone home handyman For those who are familiar with simple plumbing tools and can handle electric welding, this task is quite doable. Let's look at how you can make a garden hand drill from scrap materials.
Required materials and tools
What materials will be required for this:
- Metal pipe with a diameter of 20-25 mm.
- Strip 3-5 mm thick.
- A metal sheet 3-4 mm or a disk from a circular saw, you can use a cutter.
- Bolts with M6 nuts, if a drill with removable knives will be manufactured.
Tools:
- Welding machine complete with electrodes;
- Hammer;
- Hacksaw or grinder;
- Roulette.
Attention! pay attention to inner diameter cutters, it should be slightly larger than the outer diameter of the pipe by approximately 5-7 mm.
Manufacturing process
First of all, the length of the hand drill for the pillars is determined. Approximately, you can take it within 1.5 m. Therefore, a piece of this size is cut from the pipe. Pruning is done with a grinder.
Very important element- this is the tip of the drill. It serves as a guiding element. But if you come to the issue of ease of drilling soil (especially hard), then it’s worth making a small drill from the tip. Therefore, it is better to make the element itself from a metal strip 5 mm thick. How to do it right.
- A 10 cm long piece is cut from a strip 5 mm thick and 20 mm wide.
- One end of it is sharpened into a cone. This can be done with a grinder by putting an emery disc on it.
- The other end is ground on both sides so that it can easily fit into the pipe. Turning length - 5 cm.
- The tip is inserted into the pipe and electrically welded on all sides.
- You can change the design of the tip (improve it) by making a small drill out of it. To do this, you will have to heat the device and shape it into a screw, something like a corkscrew.
It is the corkscrew design that will help increase the element’s ability to bite into hard soil. Here it is important to accurately establish the direction of twist. It should coincide with the angle of inclination of the main drill knives. Typically, the tool is twisted clockwise, which means that the sharp edge should be located on the right side.
There is another option for making a drill tip with your own hands. To do this, you will have to cut the end of the pipe longitudinally to a depth of 3-5 cm. This is done with a grinder. There should be four or five cuts, with the same distance (or approximately the same) left between them. Now, using a hammer, you need to adjust the edges of the cuts to the center of the pipe diameter. After that, the joints of the cut strips are scalded with electrodes, and the end of the device is sharpened with a grinder.
Now you can proceed to installing the main knives. You can make them yourself from various cutting working tools. The cutters and disks from the circular saw were listed above. Basically, this list is longer. If cutting discs were not found, then knives can be made from sheet steel 3-4 mm thick. You simply cut a circle out of a sheet of the required diameter; by the way, this can be done with a grinder or electric welding. Then a hole is made in it with a diameter slightly larger than the diameter of the pipe. And after that the steel circle is cut into two even halves.
You can first cut the circle in half, and then cut semicircles on the two halves for the pipe. The important thing here is to finish the process by sanding down all the raw edges. The outer edges of the half-discs are sharpened to a certain sharpness. After which both knives are welded to the pipe. There are a couple of recommendations here:
- The distance from the place where the tip is welded to the place where the knives are installed is 10-15 cm.
- The knives themselves are installed one above the other, the distance between them is 5 cm, the installation angle is approximately 20°.
- The discs must be welded so that their working edge is directed downwards, that is, when drilling, the drill should easily crash into the ground.
All that remains is to weld a small piece of pipe perpendicular to the drill pipe. This will be the handle. Its length is 50 cm, but here everyone chooses it for themselves. To prevent the effort of human hands from breaking the weld between two pipes, it is necessary to weld gussets cut from a metal sheet on both sides.
The design of the drill can be modified, or rather, improved. Sometimes it becomes necessary to dig holes for posts longer than 1.5 m. Therefore, it is recommended to add a couple of additional pipes to the tool, which will increase the length of the tool itself. How to make these elements correctly.
- Firstly: it is necessary to modify the drill handle, making it removable. Therefore, it is not welded tightly, but made in the shape of the letter “T”. In this case, the section of pipe that will be inserted into the drill barrel must have a diameter less than the diameter of the barrel. And at the same time, the handle should fit into the barrel unhindered, but not so much as to reduce the strength characteristics of the tool itself.
- Secondly: in the barrel of the handle you need to make two through holes, located perpendicular to each other. The distance between them is 5-6 cm.
- Thirdly: exactly the same holes with a diameter of 7 mm must be made on the drill barrel at the entry point of the handle. It turns out that both elements will be connected with two M6 bolts.
- Fourth: several pipes 1.5 m long are prepared, corresponding to the diameter of the handle barrel, in which the same holes are drilled at both ends. Locations are the same as on the handle barrel.
To lengthen a hand drill two or three times, you need to unscrew the fastening bolts, remove the handle, insert the pipe into the pipe, secure them with bolts, install a handle on the free end of the extended drill, attaching it with two bolts.
As for the diameter of the holes for the posts, this can also be changed if the knives are made removable. To do this, at the place where the knives are installed, it is necessary to weld two shelves cut from a strip 5 mm thick. You can make the shelf in the form of a circle with an internal hole for the tool pipe. A circle with a diameter of 8-10 cm is cut out of a sheet of iron, a hole is made in it for the pipe, and this element is installed and welded to the trunk. You must first make four through holes in it, two on each side. Removable knives will be attached to them.
Attention! Removable knives are fastened with M6 bolts. Installation of bolts should be done with the thread upward towards the handle. They simply in this position will not interfere with the process of drilling the soil.
You can increase the efficiency of the drill if you install between the knives and the tip additional element. This is, in fact, a flat cutter that will loosen the soil before inserting the knives and center the drill itself. A small addition will make it possible to increase the drilling speed, especially in hard soils and in places where there are a large number of plant roots in the ground.
It’s not difficult to make such a flat cutter with your own hands. To do this, you will need a plate 4-5 mm thick and 30 mm wide. Two pieces of 80 mm length are cut out of it. They are welded opposite each other to the drill barrel. The right edge of the additional knives becomes sharper. To prevent heavy loads from breaking the flat cutter, you can add two metal gussets to their fastening.
In principle, this is how you can make a hand drill with your own hands for digging holes for pillars. Let's face it, it won't take very long to make this tool, about two hours, no more.
Absolutely the owner land plot at least once I was faced with the need to dig holes for posts and various supports for decoration appearance plot. It happens that you need to make a narrow hole in a not quite convenient location. It will be difficult to handle with a simple shovel, and you will have to borrow a manual pole drill from your friends or even call a specialist who can deftly handle the tool.
Hand drill design
The garden auger is very useful device for any summer resident. It is very compact, convenient and easy to use. As a rule, it is made of solid metal. It effortlessly splits small stones and plant rhizomes into pieces.
With the help of such a device, you can easily dig a hole by rotating it around its axis like a corkscrew.
The main purpose of the drill is to dig holes for posts. Small wells are made by the cutting part of the device, which can be of various shapes:
- Two-blade;
- In the form of half-discs;
- Helical;
- Screw-shaped;
- Multi-tiered;
- Solid or removable.
There are models that start with small blades and gradually increase the top to larger sizes. A factory drill is not functional and effective in all situations, because the tool simply will not be able to penetrate the soil to the required depth, or its attachments will not be of the required diameter.
Although the cost of a factory drill for poles is relatively affordable, it is quite possible to make useful tool independently, and at the same time he will answer everyone necessary requirements. The technology for making a drill with your own hands is very simple, and its cost will be much cheaper than a factory one. You just need to decide on the parameters of the product.
Let's look at a few various designs, which are responsible for the efficiency and functionality of the drill:
Materials and tools
In order to make a hand drill for poles, as a rule, it is not necessary special effort. But the craftsman needs materials and components to create the product.
List of required parts:
- Nut and bolt M20;
- Disks with a diameter of 100−150 mm - 2 pieces;
- Drill with tip (20 mm in diameter);
- Segments metal pipe: two 500 mm and one 400 mm. The wall thickness should be 3.5 mm, the outer diameter should be 40 mm.
The wall thickness of the metal pipe must be exactly this in order for the finished product to be durable and able to work with any, even fairly hard, soil. The discs can be taken from a circular saw or you can make them yourself. For homemade disks You will need sheets of metal with a thickness of at least 3 mm.
From tools when creating a product you will need:
- Bulgarian;
- hammer;
- welding machine;
- drill;
- metal drills;
- blade sharpener.
If you do not have a tip with a drill, you can replace it with a drill with a cone-shaped shank. Its diameter must match the screw. In order to avoid injury, it is recommended to use soft bicycle handles.
Step-by-step production of a drill
Draw a circle on a metal sheet, marking the center. This will be the blade. Next, this circle needs to be cut out using a grinder, and then a cut line must be drawn that runs along the diameter line. Then we draw a cutting line, which should correspond to the circumference of the collar. The resulting disk must be divided into two parts and holes for the knobs must be cut.
At the end of the pipe, which will act as a wrench, we use a grinder to cut four longitudinal lines, 3-4 cm in length. After this, you need to form a tip from them using a hammer, while you need to collect the cuts at the very center of the pipe. The resulting tip must be processed by welding and ensure that the knob does not become clogged with soil during operation.
The next step is to connect the knob to the disk by welding. This is done at a distance of 5 cm between them and at an angle to the plane of rotation of 20 degrees.
Next we proceed to the extension pipe, which should be equipped with a handle. This part must be welded in the letter “T” and be sure to weld the amplifiers to it in the form of a “kerchief”. The workpiece is threaded through the driver, and a hole is made through them so that the parts can be fastened with a pin. Several such holes need to be made in order to be able to adjust the length of the product.
The work ends with sharpening the blades. The edge of the cutter must be processed in such a way that when rotating, the tip of the blade is directed downward.
Protective covering
To avoid rust on the parts of a homemade pole drill, you need to thoroughly clean them sandpaper and treat with a primer and phosphating solution. After this treatment, the finished product can be painted.
When using the device, you need to disassemble it after each use and clean all connections from dust and dirt, and also coat them with a special lubricant that repels water. Don't miss this moment, because proper care behind the tool will be a good prevention of bolt jamming and will allow it to work smoothly for a very long time.
Ways to improve the tool
When drilling holes, the master may encounter a large number of plant rhizomes that lie tightly in the soil. The sharp edges of the blades will make working with the drill much easier. For ease of use, you can cut several teeth on the sloping area of the blade or round off its cutting area.
The design can be improved and removable drill bits. Thanks to them, it will be possible to drill holes of any diameter. In addition to the manufacture of spare parts, it is necessary to provide for their attachment to the collar. The easiest way is to connect them with two iron plates, which are secured by welding.
In the mounting plates, as well as in the blades, you need to drill two holes for the sides. The cutters are fastened with M6 bolts. To ensure that the bolts do not interfere with work, they must be screwed in with the threads facing up.
There is another way to improve homemade drill for pillars. You can increase the efficiency of the lower end of the knob. To do this, you need to cut out a narrow metal plate (10x2 cm) and grind it into a cone shape using a grinder, making a kind of point.
There is no need to make cuts in the collar; turned metal plates are inserted into its end, fixed by welding and flattened. The result should be a peak.
There is another method for making a pike. A metal plate is cut to a length of about 17 cm and a screw is made from it, similar to a corkscrew. Further, the algorithm of actions is the same as in the described first option.
A suitable drill can act as an auger, which can easily handle wood as well as metal. Such a tool will penetrate the ground much easier and will drill a hole to the required depth without any problems.
Builders who work on dense deep layers of soil will need one piece of advice. Between the pick and the cutter you need to weld a small flat cutter. Thanks to this design, it will be possible to loosen the earth and center it when drilling. For such a part you will need 2 metal plates 3x8 cm. This trick will significantly speed up working with the tool.
Milling cutters can also be made from grinder discs, which are designed for working with stone. The circles need to be cut along the radius and the hole in the center should be expanded according to the diameter of the knob. Bending the disk with the sides apart gives the appearance of a corkscrew or auger. All that remains is to weld the part in the manner described above.
It is very easy to make a cutter from a disk from circular saw. The teeth of this model can easily cope with plant rhizomes and hard soil.
The master can choose how to modernize his drill independently. It is worth saying that making a drill for poles with your own hands is not a complicated process at all and requires minimal physical and financial costs. The entire manufacturing process takes two hours at most.
Finally there is one important advice : before the drilling process, it is best to loosen the soil with a shovel, then the device will fit into it more easily and the work will go much faster. The recommendations given will certainly help the master make a functional and effective tool, which will serve him for decades and become a very good assistant.
This is what the new drill looks like
Surely, at least once in their lives, owners of land plots have had to deal with the need to dig holes, which are required to install pillars, supports, arches and other parts involved in the arrangement of the exterior. Narrow holes and wells sometimes have to be made in inconvenient places or difficult soils. An ordinary shovel cannot cope with digging deep holes, so the owner has to rent a drill or hire a specialist to handle the tool.
A garden drill is a useful tool for a summer resident. It is light and compact, easy to transport and easy to use. Made from hard metals, it splits small stones and plant roots hidden in the bowels of the earth. It is used for digging holes, substituting it for to the right place and after doing a few rotational movements similar to a kitchen corkscrew.
Description of design
The main purpose of the drill is to dig wells to depth columnar foundation. The holes are made by the cutting part, the shape of which can be different:
- In the form of a screw;
- Two-blade;
- Helical;
- In the form of half-discs;
- Multi-tiered;
- Removable or fully welded.
Some models start with small blades with 
gradually increasing to the largest ones at the top. But factory-made drills do not always turn out to be functional in practice, because the tool may not penetrate into the ground to the required depth or its attachments may not coincide with the expected diameter of the hole. And although the price finished product is small, it makes sense to learn how to make it yourself. The technology for creating a drill at home is simple and inexpensive; 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 item looks like a pair inclined planes or auger. In the second case, a spiral-shaped knife is located on a rod.
- Ground receiver. Soil accumulates in the so-called storage facility. The part facilitates work when drilling holes with a diameter of 35 cm.
- Shaper plow lower extended zone. The use of the structure helps to strengthen the columnar foundation, which is important when constructing massive structures.
The bolted connection of the drill secures the auger part to the handle. The length of the assembled product slightly exceeds 1 m, thanks to which the tool makes holes up to 700 mm. If you need 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, the location of which is the end sections of the pipe.
Manufacturing and selection of components
When making a hand drill for digging wells under pillars with your own hands, there are usually no difficulties. But during the production process, the craftsman will need parts and materials from which the finished product is made.
Parts List
- Bolt and nut M20
- 2 discs with a diameter of 100 and 150 mm
- Tip and drill 20mm diameter
- Three pieces of pipe: two - 500 mm each and one piece of 400 mm. Additional parameters: wall thickness – 3.5 mm, outer diameter – 40 mm.
Necessary materials
The requirement for the wall thickness of iron pipes (3.5 mm) is explained by the strengthening of the product and the ability to work in hard soil. Discs for work can be removed from the circular saw or made independently. They will need metal sheets With minimum thickness 3 mm.
Tools that will be useful:
- Hammer and grinder
- Welding technology
- Locksmith kit
- Electric drill with metal drills
- Sharpening wheel for cutting elements.
If there is no tip with a drill, they are replaced with a drill with a tapered 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
Application of protective coating
To prevent corrosion processes, all parts of a hand drill made for installing poles with your own hands must be cleaned with sandpaper, treated with a phosphating solution and primer. After this, the product can be painted.
Already during operation, after each work, the drill must be disassembled to clean the bolted connections from dust and coated with waterproof lubricant. Don’t be lazy - careful care of the tool prevents jamming of bolted joints and guarantees long-term operation of the entire structure.
Methods to improve tool performance
In the process of work, builders have to deal with an abundance of roots of various vegetation lying in the ground. The sharply sharpened edges of the knives make the drill easier to operate. Also, for ease of work, you can cut teeth on the sloping part of each blade or round off the cutting area.
Ways to improve the design
Drill with replaceable cutters
The first “highlight” will be the manufacture of a drill with replaceable cutters. Thanks to this tool, the master will be able to dig holes of any diameter. In addition to making spare elements, it is important to provide a method for attaching them to the collar. The easiest way to connect products is with two welded iron plates. In relation to the plane of rotation, welding is performed at an angle of 20°.
Holes for bolts are drilled in the blades and mounting plates - 2 pieces 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 threads facing up.
The second way to improve the drill is to enhance the functionality of the lower end of the driver. A narrow plate of 10 x 2 cm is cut out of sheet iron and ground into a cone with a grinder, giving it the appearance of a point. No cuts are made at the end of the knob - a turned plate is inserted into this part of the product, welded and flattened. The result should be something like a peak.
This is how the pike is made differently. The plate is cut longer (about 17 cm), heated and rolled into a screw (like a corkscrew). Work on creating the peaks continues, as in the first version.
Under the auger, you can use a drill of a suitable diameter that can handle wood or metal. An unusual tool can easily be inserted into the ground and drill it to the desired depth without problems.
Third tip useful for builders working on compacted deep soil layers. If a small flat cutter is welded between the peak and the cutter, the device can be used to perform preliminary loosening of the soil and additional centering during drilling. To make this part you will need 2 plates measuring 8 x 3 cm. It speeds up the work process.
Fourth: you can get friezes from grinder discs designed for 
stone processing. The circles are cut along the radius line and the central hole is expanded, adjusting the hole to the diameter of the knob. Its extension with the ends moving apart in different directions gives the appearance of a screw. All that remains is to weld it, as described above.
Making a cutter can be easily done from a circular saw blade. The sharp teeth of the modernized model will easily cut through unruly roots of even the strongest vegetation. What you choose for yourself, decide for yourself. In general, making a drill is not difficult and requires minimum costs. 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 coupled to the stand. 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 matters.
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 communications. Large knives with a diameter of 17 and 25 cm will serve rational decision for those who fill fence supports and small buildings, arranges compost pits and plants plants with powerful rhizomes, builds wells and surrounds the area with a fence.
Step by step photo guide:
To maintain a given angle of inclination of the lever, which will serve as a handle, when connecting the part to the stand, it is recommended to use a welding clamp. The handle must be attached to the stand itself at a right angle.
And one last piece of advice: on the eve of drilling, loosen it with a shovel upper layer soil. Then the tool will go into the ground easier. We hope our recommendations will help you, without any extra effort, make a functional drill that will last for many years and bring many benefits to your household.