Hello all !
I need help with writing a formula - I’m trying to calculate the number of rotations of a spool based upon the following: outside diameter of spool, adding material thickness for each rotation & known final length of material.
To give you an idea of the application, I work in a fabric mill & we need to make a roller shade at a certain length but need to add spring assist because it is so wide. Unfortunately, with the spring assist, you can only turn it 14 times before the spring will be at its tension limit.
Thanks !
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