"Mechanical writing" is not a commonly used term in the context of writing or literature. It's possible you may be thinking of a different phrase or concept.

Here are some possibilities:

* Mechanical writing instruments: This refers to tools used for writing, like pens, pencils, typewriters, etc. However, it's not a term describing a writing style.

* Mechanical writing process: This might refer to the physical act of writing, like the movements of the hand or the process of typing on a keyboard. It's a more general term for the mechanics of writing.

* Mechanical writing style: This is a possible interpretation, referring to a writing style that is rigid, formulaic, and lacking in originality or emotion. It might be associated with bureaucratic writing, technical documents, or overly formal writing.

To understand what you're looking for, please provide more context:

* What is the source of the term "mechanical writing"?

* What are you trying to understand about this concept?

* Can you provide an example of what you think "mechanical writing" might be?

With more information, I can help you understand the meaning of "mechanical writing" better.