we have a part which is 220mm long x 100mm wide, it incorporates 2 living hinges along the 220mm length, the part has varying thicknesses, from 1mm thick to 3mm.
problem, we have some depression in the thicker areas and the length is out by 2mm, not shorter though longer, the width of the part is perfect.
the living hinges are ok though a little stiff, hinge thickness is 250um.
material we have used is a polypropylene,
I was hoping someone would have the knowledge to help us remedy the over length and depressions we are getting.
any advice on a appropriate material would also be appreciated.
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