Fool Proofing of Jigs and Fixtures:

It can be defined as “the incorporation of design feature in the jig or fixture that will make it possible to lead the work into jig and fixture, in an improper position, but will not interfere with loading and unloading the work piece.” There are many fool proofing devices, such as fooling pegs, blocks or pins which clears correctly position parts but prevent incorrectly loaded parts from entering the jig and fixture body.

Importance of Fool Proofing:

[1] Rate of rejection is reduced substantially

[2] Productivity increases

[3] Wrong positioning of the work piece is avoided

[4] Loading and Unloading time reduces