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Overconstraints = unnecessary complexity
One of the arguments for avoiding overconstraints are that they add unwanted complexity - often invisible to engineering teams. Typically just a single overconstraint can add more than 50% dimensions to a drawing. We often see more than 10 overconstraints in moving assemblies with more than 15 moving bodies.
In the video below we explain how a single extra constraint in a simple assembly drives more than 50% additional dimensional requirements.
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