Rebuild this mounting plate from the drawing, apply 6061 aluminium, and report its volume and mass. Four corner holes, a central bore AND a counterbore all have to be right.
📋 Scenario
A colleague lost the CAD file and sends only the 2-D print, but the BOM lists the finished part's weight. Rebuild the model so it weighs the same and the geometry must match: outline, thickness, the four corner holes, the Ø30 bore and the Ø45 × 4 mm counterbore that recesses a flange.
🧱 Material
Aluminium 6061-T6
2.7 g/cm³
📐 Dimensions
120.0 × 80.0 mm
8.0 mm
4 × Ø9.0 through
Ø30.0 through
Ø45.0 × 4.0 deep
🎯 The check
Model this part (or compute it by hand), then report its volume and mass.
If your mass matches the target within tolerance, your geometry is correct — a wrong
hole, fillet or thickness will always show up as the wrong mass.
Report your result
From your volume & this material: mass ≈ — g
(density × volume; enter it above if it matches)