Print a small coupon before you print the whole part. It costs ten minutes and
tells you what your printer actually does, rather than what it was asked to do.
1. Is this safe to attempt?
Checked before anything is generated. Some parts we will not help with, and
we would rather say so now than after you have spent an evening on it.
2. Which coupon should you print?
The dimension that has to fit something else. Everything else on the part
can be a millimetre out and still work.