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[[File:Cherry MX Black switches in G80-3000.jpg|thumb|Keyboard with some keytops removed to show the [[Cherry MX|Cherry MX "Black"]] switches it is based on. MX switches are a common choice for mechanical keyboards.]]
[[File:Cherry MX Brown switch (composite).jpg|thumb|The tactile, non-clicky "brown" version of the Cherry MX switch shown in disassembled form (four parts, left and centre), with the top off (top right) and reassembled (bottom right)
Keytops are an important element of keyboards. In the beginning, keyboard keytops had a "dish shape" on top, like typewriters before them. Keyboard key legends must be extremely durable over tens of millions of depressions, since they are subjected to extreme mechanical wear from fingers and fingernails, and subject to hand oils and creams, so engraving and filling key legends with paint, as was done previously for individual switches, was never acceptable. So, for the first electronic keyboards, the key legends were produced by [[Injection molding#Design|two-shot (or double-shot, or two-color) molding]], where either the key shell or the inside of the key with the key legend was molded first, and then the other color molded second. But, to save cost, other methods were explored, such as [[Dye-sublimation printer|sublimation printing]] and [[laser engraving]], both methods which could be used to print a whole keyboard at the same time.
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