Category
Materials
Metal Density and Weight
Weight equals volume times density. Use a density table for common metals and a worked steel-bar example to estimate part mass before cutting anything, and see why it matters.
Sizing a Job From Five Numbers
Most small mechanical jobs turn on a handful of figures, and having them before you start is the difference between one trip to the supplier and three.
Work Out the Weight Before You Lift It
Steel is heavier than people estimate and aluminium is lighter, and both errors cause the same problem: someone commits to lifting, mounting or shipping…