Decorative metal etching
As you know, metal is difficult to work at home without special skills and tools, especially if it is a solid metal, like steel. Nevertheless, it is possible to call for the help of chemistry: there is such a chemical process - electrolysis. It flows on the electrodes when electric current passes through electrolyte solutions. Those. if you take a metal billet as an electrode, use ordinary salt water as an electrolyte, then when a current passes through it, the metal will begin to bleed, in other words, atoms will begin to “fly away” from the metal surface. Thus, for processing metal, we do not always need any special skills and tools, because everything can be done for us by electricity.In this article we will consider how to etch on a metal plate an inscription or a picture. This will require:Cut a piece out of it:Step 2. Thoroughly sand the surface of the workpiece, first with a large emery paper, then fine. The surface should be shiny, covered with many small scratches. You also need to go sandpaper on the edges and edges of the plate. After sanding, the metal must be degreased with alcohol, solvent, or simply washed thoroughly with hot water and soap. After that, you can not touch the surfaces with fat hands.Step 3. On the laser printer we print the picture,which will be immortalized on the metal and transferred to the metal with the help of laser-iron technology, which has been repeatedly described on the Internet. Print need to mirror. If you do not have a laser printer at hand, you might as well draw a drawing with nail polish or an indelible marker. The shaded area will remain intact, and the bare metal will undergo electrolysis, i.e. simply anxious.Step 4. Now that the billet is fully ready for etching, you need to take a non-metallic container, pour water into it and pour salt in it. The etching rate depends heavily on the salt concentration; the more salt, the faster the process goes. If the etching rate is too high, there is a risk of damaging the protective layer of varnish or toner from the printer; The optimal ratio - a tablespoon of salt in a glass of water. In the tank you need to fix the anode, i.e.the metal blank and the cathode itself is a simple piece of metal. The larger its area, the higher the etching rate will be. A pictorial setting for etching is shown in the picture below:
- Plastic or glass container.
- Power source 5 - 12 volts.
- Connecting wires.
Electrochemical engraving on metalStep 1. From a metal plate, cut a rectangular piece, on which the inscription will be further etched. You can get a metal plate with a thickness of 1-2 mm at any hardware store, I bought the cheapest steel eye.
Date: 09.10.2018, 08:55 / Views: 85164
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