you need
  • proper knife liquid degreasing knife (petrol, alcohol, cologne), the figure to be applied to the blade of a knife, tape, a sharp knife or scalpel, power supply 5 ... 12 V, nailwith a wound on her hat wool, salt solution (one teaspoon per 50 g. of water).
Guide
1
Drawing on the knife blade can be applied by means of electro-chemical etching.This is a simple way of labeling on all metals and alloys without the use of complex chemicals.It is based on the principle of electro-etching metal.However, this method is not suitable for silver and lead.Get to work.
2
Figure.Think about what the drawing is applied to the blade.You can engrave the Chinese character or the whole word.
3
Preparation blade.The surface of the blade it is necessary to degrease, because this directly affects the quality of the applied pattern.Degrease any available handy liquid: gasoline, alcohol or cologne.
4
Pre-patterning.Stick on the blade in the right place a piece of tape.Apply a sharp knife or scalpel to scotch pattern, being careful not to damage the adhesive tape.
5
metal etching.At this stage you will need a power supply, you can use the charger from the phone.Prepare the brine.Then proceed to the electrochemical cleaning of the metal surface.Connect the "+" to the knife, and "-" to the nail with a cotton hat, it will replace the electrode.Then turn on the power supply, dip the electrode into the saline solution and draw on the drawing surface.This procedure was repeated 2-3 times for best results.
6
Then change the cotton head of the nail to clean and change the polarity of the power supply "+" to the electrode, and "-" to the knife.Dip the electrode into the saline solution and begin to display the picture that will be shown on the eyes.To achieve maximum effect, repeat the procedure 2-3 times.
7
end of work.Peel off the adhesive tape from the knife and remove the sticky traces.Engraved on the blade of the knife is ready.