A screw for drilling the earth may be needed in cases where there is a need to go deep into soft soils. A tool for this can be made independently. The maximum trunk depth will be 20 m.
Design Features
One of the parts of this design is a split drill pipe, the length of which can be increased by deepening. One of the most important elements is the handle, with which you can rotate the tube yourself or with the help of a second person. If you decide to make a screw for drilling the earth, it is important to provide it with a working part, which can be done in several ways. It is important to prepare a sufficiently thick metal, as well as welding equipment.
Spiral Drill Making
If you decide to independently make a screw for drilling the earth, then you can make it in the form of a spiral design. The base will be a metal rod, at which the end is pointed. Two knives should be welded to the tip with a tip so that their edges are 200 mm from the base. To perform the work on the formation of knives, 1/2 of the steel disk should be prepared, the thickness of which can vary from 100 to 150 millimeters. When making a screw for drilling the earth, it is important to weld the knives to the steel rod so that the elements are located under a slight slope, the value of the latter should be 20 degrees to the horizontal surface.
The halves of the metal disk should be opposite each other. Ultimately, the angle between the fixed knives should be 40 degrees. The lower edges of the working elements of such a drill must be sharpened well before use. The ease and speed of the tool entering the soil will depend on how sharp the knives are. If we compare such a device with an industrial model, it can be noted that at the last strip the steel is initially heated to the required temperature, and then twisted into a spiral. The distance between the turns is equal to their diameter. After the steel is twisted, it is tempered.
Features of the manufacture of a drill under water
If you decide to make a screw for drilling the earth, it is recommended to consider a photo of this tool before starting work. This will help to understand what design features the tool has. To make a pen, you can use a pipe based on metal. The cross section of this workpiece should be three centimeters, but no more. If such a pipe is not available, then wood can be used to make the handle. The drill bit can also be made of steel strip. At the back end of the strip, you need to form a hole for the handle, while at the working end the tip is fixed in the form of a loop. At the time of rotation of the drill in the soil, the tip absorbs a certain amount of soil, which is then removed to the surface with the tool. In the next step, the whole procedure is repeated. A well of the required depth will be obtained in the process of joining several bands and rotating the structure.
Manufacturing technology
A screw for drilling 50mm of the earth will turn out if you use a steel strip whose length is 0.5 meters. You can choose its width yourself, using a limit of 5 to 10 cm. For the tool, you can use steel 1 cm thick. 8 cm should be retreated from the end of the strip, and then make a hole in the form of a gap. The size of the latter should be 150x2 millimeters.
When a screw is made for drilling the earth manually, the back end of the drill must be bent so that a ring is obtained for installing the handle in the form of a lever. At the working end, the steel strip on the sides should be bent in opposite directions to form an oval. In the area of the tip, the metal strip must be cut to form a tip. It should be sharpened, and the sides bent in the opposite direction. A handle is inserted into the ring on the back of the tool, which gives the screw a rotational movement. With the help of such equipment, it will be easy to make a well not only in sandy soil, but also in loam, in which there are interspersed gravel.
Spoon type screw making
If you decide to make a screw for drilling the earth with your own hands, then a spoonful type of tool can form the basis of the design. The device will look like a cylinder made of metal. On the equipment you need to make a slot that has a spiral or longitudinal shape. On the working tip of the device should be a bucket made of metal sheet. Among other things, this part can be formed from a longitudinally cut pipe billet. The process of rotation of the screw will destroy and absorb the soil using the tip and slots that are located in the cylinder. In order to improve penetration, a drill bit of significant diameter should be welded to the bottom.
Conclusion
The axis of rotation and the axis of the drill of the entire structure should coincide, while the cylinder with the cutting edges should be offset 1.5 cm relative to the axis of the device. Ultimately, the cylinder will move with eccentricity and cut the soil from the walls of the borehole, forming a borehole with a larger diameter compared to the screw itself.