How To Make An Angle Grinder From A Screwdriver
How to make a circular from an angle grinder
Necessary tools for converting an angle grinder to circular and step-by-step refinement of an angle grinder.
Required tools and materials
To make a circular with your own hands you will need:
- Angle Grinder;
- Electric drill;
- Welding machine (possibly);
- Screwdrivers and pliers.
Of the materials will come in handy:
- Steel corner 25 mm or aluminum 50 mm;
- Steel plate;
- Bolts and nuts;
- Tube segments.
The circular angle grinder will be connected to the network using a switch, which, according to all the rules, must be placed on the panel from the side of the worker. It should be available at any second.
Something else may be needed, but the home workshop is designed in such a way that a lot is replaced in it. Therefore, a strict list will not stand up to criticism. You will need some kind of fasteners or self-tapping screws, pieces of wire and insulation.
How to make a circular from an angle grinder
In any home workshop, the need for a circular saw periodically arises. But because of this rare frequency, it simply does not make sense to acquire it. Not cost effective. In this case, practice prompts a way out. To make a circular with a drive from an angle grinder. It’s much cheaper than buying a factory saw for two hours of work.
Rework process
To be precise, it can hardly be called a rework, it is a refinement or expansion of the functionality of an angle grinder. You can divide the revision into stages or steps in the work. To begin with, let’s define the main tasks. It is necessary to make a table for the installation of a circular saw. It can be of any material available, but a steel corner base is preferable.
The angle grinder should be painlessly installed and removed, so its attachment to the table should be open and accessible. The cutting disc will be mounted directly onto the shaft of the angle grinder. It must be adjustable in height or change the height of the cutting blade above the table plane.
There should be an adjustable rail on the table. With its help it will be possible to set the thickness of the board cut. As a special case, you can install the corner guide, if necessary.
So, we constructively make a machine for the existing angle grinder with adjustment for the height of the cutting wheel. For simplicity of construction, we will use wood:
- We make a cut for the saw in the tabletop from the board. If it is a furniture board or plywood sheet, then it is advisable to strengthen it with an additional bar along the position of the cutting wheel;
- We fasten the rear part of the machine structure on a hinge. Then we fix the angle grinder. A short bolt with a locknut is required to secure it. The bolt will screw in instead of the handle, and attach the angle grinder to the hinge part of the machine;
- On the side of the handle of the angle grinder, we make a clamp with a sawn-off adjustment bar. This is a U-shaped bracket into which the drill handle should fit snugly. For density, rubber strips can be glued. An adjusting strip with a cut will be attached to the same u-shaped plate.
- We fix the hinge and the adjusting bar from below to the tabletop so that the cutting wheel evenly enters the cut of the tabletop;
- We install the tabletop on a base made of a steel corner or wooden blocks;
- We supply electricity. Electrical safety conditions must be met. It is better to connect using a cable that is not afraid of a piece of board accidentally falling onto it;
- We are doing a test run. The saw blade must rotate without catching the edges of the slot. If this is not the case, then it is necessary to change the position of the attachment of the hinge or u-shaped plate. The material feeding to the cutting wheel should not cause movement or vibration of the angle grinder.
Both the angle grinder and the hand-held circular saw are a very useful removable drive for a stationary circular saw.
It is not difficult to make a circular saw from an angle grinder. To do this, the protective cover must be redone so that almost the entire saw blade is covered. And it is necessary to install a movable protection on the working sector of the disk, which will move during operation. It is also advisable to install a vacuum cleaner pipe on the casing if the saw is to be used indoors.
An additional curved handle made of thin-walled pipe must be installed in the front. With this handle it will be safer and safer to fix the position of the circular during operation.
You may have difficulty making a stationary circular from an angle grinder or hand held circular. On construction sites and forums, you can find the required drawings of simple structures.
Battery case power supply
Mobility remains, you are limited only by the length of the network cable. The only problem is how to squeeze a sufficiently powerful transformer into a small case.
We recall Ohm’s law again, and understand that a powerful 220 volt electric motor can be compact.
Using a car battery charger
The principle is the same as using a computer power supply. It is necessary to purchase an old charger for the starter batteries. The modern fashion for compact impulse chargers has left analog linear devices with manual control of voltage and charge current behind. Therefore, such a device can be purchased on the automotive market for a symbolic cost.
Charger MAX INTER
It’s good if the voltage can be adjusted smoothly. In this case, your makeshift power supply will fit any screwdriver.
Converting it to a power tool is reduced to connecting the input of the electric motor to the power terminals of the charger.
We build in a ready-made power supply
To do this, you need to purchase a ready-made block with suitable characteristics and dimensions. There is enough of such stuff on the radio markets.
Take the body with you and go to the fitting. When the required power source is purchased, we carefully separate it from the case.
We place the screwdriver in the battery box. All components must be securely fastened.
If necessary, extend the wires between the control board and the transformer. If the circuit touches the metal parts of the transformer during operation, a short circuit will occur.
Since the space in the case allows. Separate the board and the transformer for better cooling. Whichever quality power supply you choose, the load will be high and overheating is possible.
It will not be superfluous to fix additional radiators on the power control microcircuits. Operate the screwdriver for a long time, disconnect it from the mains and touch the radio components on the control board.
You yourself will understand which elements need heat dissipation. Holes for air circulation can be made in the housing.
Redesigning the power supply unit with your own hands will not take much time, and the cost of the purchased module is incomparable with restoring the battery’s performance.
We build in a ready-made power supply
To do this, you need to purchase a ready-made block with suitable characteristics and dimensions. There is enough of such stuff on the radio markets.
Take the body with you and go to the fitting. When the required power source is purchased, we carefully separate it from the case.
We place the screwdriver in the battery box. All components must be securely fastened.
If necessary, extend the wires connecting the control board and the transformer. If the circuit touches the metal parts of the transformer during operation, a short circuit will occur.
Since the space in the case allows. Separate the board and the transformer for better cooling. Whichever quality power supply you choose, the load will be high and overheating is possible.
It will not be superfluous to fix additional radiators on the power control microcircuits. Operate the screwdriver for a long time, disconnect it from the mains and touch the radio components on the control board.
You yourself will understand which elements need heat dissipation. Holes for air circulation can be made in the housing.
Redesigning the power supply unit with your own hands will not take much time, and the cost of the purchased module is incomparable with restoring the battery’s performance.
Battery case power supply
Mobility remains, you are limited only by the length of the network cable. The only problem is how to squeeze a sufficiently powerful transformer into a small case.
We recall Ohm’s law again, and understand that a powerful 220 volt electric motor can be compact.
Making a homemade power supply
If you are familiar with the principles of building electrical circuits, you can make your own power supply. A diagram giving general concepts is shown in the illustration.
The transformer can be picked up from an old tube TV, or other household appliances. Power 220 volts 250-350W. The main thing is the power supply. The donor should not be pulsed.
The voltage on the secondary winding is 24-30 volts. The secondary winding is made from a wire of the corresponding section.
However, if the output winding current is at least 15 amperes (see transformer specification), there is nothing to worry about.
After the losses on the diode bridge (1-1.5 V on the diode), you will get the required output value.
If you have an electrical engineering education, make the calculation yourself. Or in a practical way: by connecting a 220 volt 100W incandescent lamp as a load, measure the output voltage. E
If it exceeds the needs of the screwdriver, reduce the number of turns of the secondary winding of the transformer.
Circular Saw from Conventional Angle Grinder
It is too expensive to have an entire range of electric tools at home. For example, a circular at home is rarely required. Sawing boards can be done with an upgraded angle grinder.
Table circular saw
Sometimes there is a need to change the width of the board or the thickness of the bar. The best option for this kind of work is a circular saw, especially if there are a lot of boards. For cutting boards of small length (1-2 m), the table version of the circular is very useful. It is not necessary to buy such a machine, you can do it yourself from the same angle grinder.
The design of a circular saw is much more complex than a miter saw. The time of contact of the saw blade with wood is quite long, therefore, the reliability of fastening the body of the angle grinder to the bed should be higher.
This is how one of the options for a table circular may look like.
The photo shows that the desktop consists of two planes:
- The upper table is designed to advance the workpiece;
- The lower one serves as a stop for the grinder.
The disc passes through a groove in the top surface. If the angle of contact of the two planes is provided with pivoting hinges, then it will be possible to adjust the working height of the saw blade to reduce the area of rubbing surfaces.
The head of the bolt is clearly visible on the upper surface of the table, with the help of which the angle grinder is fixed. Protruding bolt limits the width of the processed board. You can cope with this problem by laying another layer of plywood.
The abutment angle should be as long as possible in order to prevent the board from deviating from the cutting direction. It is better to fasten the corner so that you can change the working distance between it and the disc: then the width of the cut part will also change.
Miter saw
Trimming, that is, cross-cutting of boards or bars at right angles, is better if you use a special device.
You can also make such a machine from an angle grinder with your own hands.
- To do this, an angle grinder with a disc for wood is fixed on slewing ledge perpendicular to the direction of the length of the board so that the plane of the disc is directed strictly vertically. One attachment point should be located in the area of the gearbox, and the second should be at the opposite end of the machine.
- The gear housing has threaded holes for fixing standard handles. Using the corners and these holes, the angle grinder must be attached to the moving part of the machine.
- The back of the body is attached to the board with a clamp. Protective cover the disc can be used with any power tool of a suitable size.
- Closer to the vertical support you need to fix stop angle. It should be located strictly perpendicular to the plane of the disk, both in vertical and horizontal directions.
The spring at the rear end of the bar serves to return the miter saw to its original position after the end of the cut. The horizontal table should have a transverse groove into which the disk enters when cutting the board. Disc diameter choose based on the width of the boards. So trimming can be done in one go. The main thing is that the inner hole of the disc must coincide with the mounting on the gearbox axis.