Staged Tooling and Fixtures
If a part or tool must be placed into a fixture prior to an operation, such as machining, add a fixture so that while one part or tool is in the machine, the second can be set up in the fixture.
Operations Conducted in Parallel
Consider the pit crew example again: if the four tires are changed simultaneously by four crew members that pit stop is a lot faster than if the crew moves from tire to tire in sequence.
Standardization
Tools that are the same size with the same attachment location can be changed much more quickly. Consider how long it would take a pot crew to change tires if the replacement tire had a different lug nut configuration. In the same vein, a common die height allows the shut height of the press to be set to a common dimension.
Standardized attachment points and methods reduce confusion and the number of fasteners - saving time. Standardization also applies to tool storage organization so that tools can be quickly located. See the 5S tutorial of the Toolbox for additional discussion of workstation organization.