Plastic mold dimension from shrinkage

Calculates volumetric shrinkage from linear shrinkage using a simplified isotropic three-direction model.

Calculates plastic mass from volume and user-provided density; it does not use a plastics database.

Calculates helper length change from user-provided initial length, expansion coefficient, and temperature change.

Calculates tolerance width and mean dimension from upper and lower limit dimensions.

Calculates the midpoint from upper and lower limit dimensions.

Calculates allowable stress as strength divided by safety factor.