Quote Originally Posted by m_c View Post
Wrong way to think about it.
You need steps per mm.
So if it takes 8000steps to move one pinion rotation of 96.16mm, then you divide the 8000 by 96.12, which gives 83.19467554 steps per mm.
I did try it that way but didn't want to mention in fear of looking daft, as I calculated it as it was written

Cheers for the help lads much appreciated.

Attached a few pics just in case I've missed or got something wrong









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