Resistance piling was a huge lesson: each tiny discrepancy compounds across assemblies, so shop drawings define voids

https://lanesjes676.capitaljays.com/posts/dormers-you-can-count-on-the-honest-aging-of-hand-fabricated-copper

Tolerance stacking was a large lesson: each little variance substances across settings up, so shop drawings specify voids, shims, and port lengths to guarantee a perfect website fit.