Use of old printed circuit boards. Scheme, description

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ENCYCLOPEDIA OF RADIO ELECTRONICS AND ELECTRICAL ENGINEERING
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Use of old 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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Many radio amateurs usually throw away old fiberglass printed circuit boards after dismantling parts. Meanwhile, these boards can serve as an excellent material for the manufacture of many different parts, cases for small appliances, brackets, racks, partitions, collapsible transformer cages, power compartment covers, insulating washers and gaskets, etc.

Depending on how you are going to use the recycled fiberglass, you should decide whether to remove the foil from it. If yes, then this is most conveniently done with a solution of ferric chloride or hydrochloric acid. A multilayer board is not suitable for the manufacture of a transformer frame, since it will not be possible to remove the foil from its inner layers and it can create closed turns in the transformer.

If holes need to be removed from the workpiece, they are simply puttied with epoxy glue. Large areas with intact foil on the old board should be cut out - they will be useful for making small boards. Thick plates can be glued together from several thin ones with the same epoxy glue. It is often possible to delaminate a plate of thick material into several thin ones.

It is difficult to enumerate all the possibilities of using old boards. Every radio amateur, no doubt, will cope with this task at his own discretion.

I want to note that the processing of fiberglass should be carried out very carefully - after all, this produces a lot of dust containing small particles of glass and epoxy compound that are harmful to health. Therefore, work should be carried out in a well-ventilated area, more often remove dust, chips and scraps of material.

Author: V.Besedin, Tyumen

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