Tolerance stacking was a huge lesson: each small deviation substances across assemblies, so shop illustrations specify voids
https://www.mediafire.com/file/4aie19pn43rpjw9/pdf-72924-48992.pdf/file
Tolerance stacking was a big lesson: each little inconsistency compounds across settings up, so store drawings specify voids, shims, and slot lengths to make sure a perfect site fit.