Many of you often have to work with sheet metal, in the process of manufacturing blanks it needs to be quickly and efficiently cut.
In this article, the YouTube author of Samodelki Vitmana tells you how he made metal clippers.
This project is quite simple to manufacture, and does not require welding or turning.
Materials
- Steel plate from an automobile spring
- Steel strip 30X8 mm
- M10 bolts, washers, nuts
- Sandpaper
- Spray paint.
Instruments, used by the author.
— Bulgarian
- Petal stripping and cutting discs
- Drilling machine
- Belt sander
- Vise, electronic vernier caliper, core, wrench.
Manufacturing process.
As knives for this fixtures The author chose two trim from an old car spring. Its steel is strong enough, and can withstand even severe stresses on the cutting edge. A steel strip 30X8 mm will be used for the handle. It can also be replaced with a profile pipe 20X20 mm, so it will be even more convenient.
The first step on the movable knife is to mark and pivot the place for the M10 connecting bolt.
The workpiece is fixed in a vice and a hole with a diameter of 10 mm is drilled.
The master also drills three bolt holes in a steel strip.
So, the first knife and handle are prepared for further processing.
Now marking and punching of future mating holes on the knife is carried out.
The holes are drilled with the same drill at 10 mm. After that, the author checks their alignment.
Having drilled a hole in the corner of a fixed knife, the author polishes its surface with fine-grained emery paper using a belt sander. On both knives you need to get the most even plane.
Then, using the grinding and flap grinding discs, the master makes the blades lower at a slight angle (about 15 degrees), and polishes their surfaces. At this stage, it is extremely important not to overheat the metal, otherwise it will lose its strength and it will have to be hardened again. For cooling, you can use plain water or ice.
As a result, both knives are almost ready.
At the next stage, the author covers the product with spray paint, with the exception of the inner surfaces and descents of knives.
After the paint dries, the master begins assembly. First of all, he connects the handle to the knife with the help of three M10 screws and lock washers.
Now both knives are interconnected.
The author is pleased with the work done, since there is practically no backlash between the knives. Now the lever scissors can be fixed in a vice, and proceed with the tests.
The first experimental will be a sheet of galvanized steel with a thickness of 0.8 mm. To cut this material with such a tool is obtained not only in a straight line, but also under small radii.
Further, the author tried to cut a piece of aluminum plate with a thickness of 2 mm. With it, the tool copes with virtually no tangible effort.
After several days of operation of the tool, and cutting them with various materials, the blades remained completely unchanged, the master did not find any scratches or dents on them. Unfortunately, the author never announced the maximum thickness of the cut metal, which this tool can handle.
Here is such an unpretentious tool that is useful to almost every master, it turned out from the author. In terms of optimization, it is worth reinforcing the axis connecting the two knives by installing the M14 bolt. By the way, the cost of a similar factory tool on the Internet starts at 8,000 rubles. So the savings in the case of self-manufacturing are quite obvious.
Also recently article about the manufacture of a small machine for cutting sheet metal, it uses a fairly cheap special nozzle for a drill or screwdriver.
I thank the author for the simple but useful design of the metal cutting tool in the workshop!
All good mood, good luck, and interesting ideas!
Author video can be found here.