Pencil WeldingMiniature welding of metal conductors or small-sized parts can be done with a simple rod made from a simple pencil. A mini welding machine with a graphite rod is possible not only to weld, but to cut metals of small thickness. How to apply it and for what, I think, you decide.
You will need
- Step-down transformer.
- Simple pencil.
- Clamp, such as a crocodile.
PreparationA miniature welding machine will need a transformer with an output voltage of 27 V. Its power is somewhere between 50-60 watts. You can take any other transformer with similar characteristics, or use ready-made sources with adjustable voltage.
Welding metalBefore you start welding anything, take care of safety precautions. Be sure to use safety glasses and do not touch live parts. All actions you do only at your own peril and risk, so be vigilant and careful. Prepare a refractory surface for welding: a brick, a piece of stone or tile, and so on. Let's proceed. We will weld two copper wires. We connect the common to the wires to be welded and touch the surface to be welded with an electrode. Initially, the arc does not ignite, the stylus smokes. This is normal for initial startup.
Metal cuttingAs with a real welder, this mini model is also able not only to weld, but also to cut the metal. But for this it is necessary to increase both the temperature and the current. This can be achieved by reducing the length of the electrode. As a result, the temperature rises sharply. Cut off the self-tapping screw.
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