A Tolerance Guide, Page by Page

What this page covers

• CNC overall: 0.01 mm, the general statement from the overall CNC pages
• Milling: plus or minus 0.005 mm, from the milling page only
• Turning: plus or minus 0.01 mm or better, from the turning page only; five-axis titanium concentricity plus or minus 0.01 mm, from the five-axis page only
• Sheet metal cutting: laser and water cutting plus or minus 0.05 mm, plasma cutting about plus or minus 0.2 mm, from the sheet metal page only; vacuum casting key dimensions plus or minus 0.1 mm, from the vacuum casting page only; extrusion secondary machining plus or minus 0.1 mm, from the extrusion page only

What to confirm before ordering

Grinding accuracy is not given a number on this site, because the source pages describe it only in qualitative terms. Never read one page's figure as a promise for another process. Before ordering, confirm minimum order quantity and lead time for your drawings.

Drawing checklist

Send the drawing with units and scale stated, the material and grade, the critical dimensions and tolerances marked, and the finish required. State the quantity you need checked and the question the part must answer: fit, function or appearance. Uploaded files are used only for the quotation, and non-disclosure agreements are supported.

Quality checks

Parts are inspected with a coordinate measuring machine, a projector and height gauges, with quality control at each production stage, and a dimension report can be provided for a project on request.