What is a fold line in technical drawing?

Answer 1

A technical drawing will show all the surfaces that are to be modified, say for example by machining. The various views, like top, side and front are put on the page in a location such that if the page was folded the views would be in the correct location as if looking at the part through the walls of a glass box.

The fold line is the line where you would fold the page to make the various drawing views come out in the proper location.

The fold line is often a dashed line as long as the part with 2 long and 2 short dashes.

A view can also be made of a surface (or plane) that is not right angles to the other views. This is helpful for a machinist setup where the part is mounted square to their cutting tools.

No matter what drawing standards say, if the drawing is not clear for its intended purpose, it must be changed in any manner needed to make it clear.

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