Ferritin is an iron-protein complex which plays an important part in the storage of iron. Here an atomic structure is proposed for the iron containing core and its synthesis is discussed.

For a lot of reasons, home etching of PCBs is somewhat of a dying art. The main reason is the rise of quick-turn PCB fabrication services, of course; when you can send your Gerbers off and receive ...

His etchant of choice is Ferric Chloride, which can be ordered as a dry powder. He uses the direct etch method of loading etchant into a sponge an applying that to the board. The board he makes in ...