Detail drawings contain all of the necessary information to manufacture a part.

Hidden lines are usually included on assembly drawings.

With constraint based modeling software, assembly constraints create relationships between modeled parts.

In assembly drawings, views should show how the parts fit together and suggest the function of the unit.

The U.S. Patent Office has strict requirements for patent drawings.

In 3D assemblies, the last part added to the assembly becomes the parent part.

Assembly drawings are usually not dimensioned.

Working drawings are not legal documents.

To simplify drawings, it is permissible to list rather than draw standard parts.

When multiple detail drawings are shown on one sheet, it is not always necessary to identify each part.

Patent drawings must be mechanically correct and constitute complete illustrations of every feature of the invention claimed.

Detail drawings are also called piece part drawings.

A skeleton assembly can be used to define locations of individual parts in an assembly.

In working drawings, showing two detailed parts per sheet is typically preferred.

Working drawings are a set of assembly and detail drawings.

In assembly sections, bolts, nuts, and keys are typically left unsectioned.

In an assembly section, these parts should have their section lines left out or shown solid black:

In these drawings it is necessary to show cut surfaces and distinguish between adjacent parts:

Patent applications do not always include line drawings.

These are groups of components of a larger machine: