Cardboard mock-ups are extraordinarily helpful in making real the space that will define the product (as opposed to CAD drawings). They are regularly used in ra

Cardboard mock-ups are extraordinarily helpful in making real the space that will define the product (as opposed to CAD drawings). They are regularly used in rapid prototyping. The fact that they aren't waiting before having a final metal frame before testing for instrumentation fit is a plus in my book.