Dimensional tolerances held on castings will depend on the type of pattern material used. Typical tolerances in platinum group metals can be expected to fall roughly into the following ranges:
- Plastic or wax injected patterns from hard tooling: +/- .002”
- Rapid Prototype Patterns – thermoplastic-type: +/- .004”
- Rapid Prototype Patterns – photopolymer-type: +/- .005 – .008”
If tolerances exceeding these values are required, post-machining operations can be quoted upon request.
Note: the above represents average tolerances only; specific geometries may perform differently.
Layout and Sampling
First Article Layout and Sampling Reports can be provided through use of CMM, Optical Measuring Devices, and Digital Calipers.