Method of drawing printed circuit boards 1. Scheme, description

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ENCYCLOPEDIA OF RADIO ELECTRONICS AND ELECTRICAL ENGINEERING
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How to draw printed circuit boards. Encyclopedia of radio electronics and electrical engineering

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Encyclopedia of radio electronics and electrical engineering / Ham Radio Technologies

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I want to share information on a convenient way to draw printed circuit boards. At one time, I had to both breed and draw printed circuit boards for prototypes. Many methods have been tried. But the best, in my opinion, is the next one. As a pen - medical needles are used. They need to be shortened to 10 - 15 mm, then soldered to the poster pen with a slope of 35 - 45 degrees, the edge is turned with a zero point into a cone.

Using a set of 5 - 7 such pens of different diameters, it is very convenient to draw almost any path.

For drawing round nickels, I also used (I use) a medical needle inserted into the "ballerina". The circles are very high quality.

Now the most important thing about the varnish. The best option is to use bituminous varnish, but one or two drops of kerosene per 50 g must be added to it. varnish. It makes it possible not to dry out the varnish in the needle. Drawing in this way is a pleasure. A few more tips: after finishing work, be sure to rinse the needles in gasoline or solvents, and thread an enameled wire of a suitable diameter into the needle; as a ruler, it is better to use a transparent triangle with beveled edges. at the corners of which it is necessary to glue 2 - 3 mm. pieces of skin. Thus, you can draw lines without fear of smearing "fresh" tracks.

With some skill, printed circuit boards turn out no worse than factory ones (and if you use caps, sometimes even better)

I hope that this information will help you in the manufacture of printed circuit board layouts.

Author: Andrey, Rostov-on-Don; Publication: N. Bolshakov, rf.atnn.ru

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