External shaping and tight tolerances exist

Parts are shaped or non-symmetrical with fine detail

Multiple and/or intricate internal passageways in design

Dimensions are small to medium, typically under 1,000 lbs./454 kg

Excellent as-cast surface finish is required

Wall thickness is too thin for sand casting

High upfront tooling costs relative to sand casting are acceptable

Low volume allows printed patterns to replace upfront tooling

Ongoing tool maintenance costs are not desired

Machining of internal passageways is not possible

When To Use Investment Casting

External shaping and tight tolerances exist

Parts are shaped or non-symmetrical with fine detail

Multiple and/or intricate internal passageways in design

Dimensions are small to medium, typically under 1,000 lbs./454 kg

Excellent as-cast surface finish is required

Wall thickness is too thin for sand casting

High upfront tooling costs relative to sand casting are acceptable

Low volume allows printed patterns to replace upfront tooling

Ongoing tool maintenance costs are not desired

Machining of internal passageways is not possible