https://mashharawi.com/writing/ Notes on commercial steel, software and automation. en Sun, 13 Sep 2026 07:19:28 +0000 https://mashharawi.com/writing/weight-tolerance/ https://mashharawi.com/writing/weight-tolerance/ Sun, 13 Sep 2026 09:00:00 +0000 Two mills can both meet the standard and still hand you a different invoice. The gap lives in the tolerance band.