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.