Measure casting shrinkage using either weight or a linear dimension. Choose the measurement that matches the data you are actually recording.
Weight shrinkage and dimensional shrinkage are related but not interchangeable. Use the measurement that corresponds to your production record.
Weight compares mass. Dimensional shrinkage compares a length or other physical dimension. A dimensional change can have a much larger relative effect on volume than the same percentage change in one linear measurement.
Record repeat measurements from comparable casting jobs to establish your own historical process range. An isolated result can be affected by gating, material balance or weighing conditions.
Yes. Switch to Dimension Shrinkage mode.
Yes. The calculation will show a negative shrinkage, which indicates net weight increased between the two measurements.
No. It measures the numerical change only.