Physical prototypes
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Flip to reveal answersWhat does a physical prototype test that CAD cannot?
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Question
What does a physical prototype test that CAD cannot?
Answer
Anything the body judges: weight, reach, grip, balance, fatigue, and fit in a real space with real obstructions.
Question
Name the three considerations for a physical prototype.
Answer
Scale — full size wherever a body is involved. Shape — the form in the hand, weighted to the real mass. Space — whether it fits in the real place it must be used.
Question
Aesthetic vs functional prototype?
Answer
An aesthetic prototype tests how it looks and feels and need not work. A functional prototype tests whether it does the job and may look like nothing. One prototype doing both usually does neither.
Question
Why weight a foam model?
Answer
Unweighted, it flatters every design — with no mass there is no wrist torque, so every grip shape feels comfortable and the test cannot tell them apart.
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Topic 6.2 hub
Modelling and prototyping
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