Routine plus/minus .0002 inch positioning, with plus/minus .0001 inch repeatability where the print demands it.
Precision machining is the discipline of holding features to a tighter tolerance than the average shop will quote. On work routed through Quick Brown Fox Solutions, plus/minus .0002 inch is the routine class on every CNC platform in our production network — not a special-process up-charge. On the network's high-precision lathe, repeatability on critical turned features tightens to plus/minus .0001 inch. That precision comes from the platform mix, the thermal stability of the production floor, disciplined fixturing on every job, and an ISO 9001:2015 quality system that makes the tolerance class verifiable rather than asserted.
Engineers send precision work to us when the print calls for true-position callouts in the .0005 inch range, when bore concentricity has to be controlled to the limits of single-setup machining, or when a feature has been rejected at another shop for finish or roundness. We will tell you up front whether the print is in the routine class, the stretch class, or out of practical reach.
Routine plus/minus .0002 inch is held on the network's 3-axis VMCs at X 32.5 inch / Y 20.5 inch / Z 20.1 inch and on multiple VMCs at X 23 inch / Y 22 inch / Z 20 inch running 12,000 RPM. The 5-axis machining center with a 19-inch trunnion table and 18,000 RPM spindle consolidates contoured geometries into a single setup, which controls true position, concentricity, and perpendicularity inside the tolerance class. On the lathe side, a high-precision CNC lathe with 2.0 inch bar capacity holds repeatability to plus/minus .0001 inch, while supporting manual chucker lathes hold plus/minus .0002 inch on secondary operations.
Workholding is the other half of the equation. Precision vises, ground jaws, soft jaws cut on the machine, and dedicated fixtures keep clamping repeatable across the lot. Materials routinely run include aluminum alloys, stainless steels, carbon and alloy steels, brass, bronze, copper, and engineering plastics; titanium and high-nickel alloys are available on request.
Routine tolerances are plus/minus .0002 inch, with plus/minus .0001 inch repeatability on precision lathe work where the drawing calls for it. Verification is performed on a benchtop optical comparator and with calibrated hand gauging, with in-process checks documented to the inspection plan. Every job ships against a documented quality record under the network's ISO 9001:2015 program. QBF's UEI MA3DSJEPMFQ8 and CAGE 201W8 are on file with the federal government.
Micron-level work and inspection planning for the most demanding prints.
Complex contoured geometries machined complete in a single setup.
Eight lathes covering chucker, bar, and live-tool configurations.
The full Quick Brown Fox Solutions service line.
