Quoting Inspection Costs Accurately

Most shops quote machining or printing time down to the minute, then slap a flat “inspection fee” on the line item and hope it covers the CMM run, the first-article report, and the occasional gauge R&R study. It rarely does. Inspection is where margin quietly evaporates — especially when a customer’s drawing calls out GD&T that requires three setups on the CMM and a PPAP Level 3 submission package.

Why Inspection Gets Underpriced

Three habits drive the gap:

• Visibility: Machine time shows up in CAM simulation; CMM programming time does not.
• Variability: A “simple” tolerance stack-up can balloon into a full-day measurement routine when the datum structure shifts.
• Documentation overhead: FAI reports per AS9102, capability studies (Cpk/Ppk), and material certs take admin hours that never hit the shop floor clock.

The result? You win the job, then spend two unbudgeted days programming the CMM and chasing the quality engineer for sign-off.

Break Inspection Into Billable Buckets

Treat inspection like any other process: define the steps, assign time, attach a rate.

1. Programming & setup — Offline CMM programming (PC-DMIS, Calypso, Modus), probe qualification, fixture alignment.
2. First-article run — Actual measurement cycle, re-probing outliers, operator wait time.
3. Report generation — Ballooned drawing, dimensional results, statistical summary, electronic delivery (PDF/QIF/XML).
4. Capability studies — Gauge R&R, Cpk/Ppk runs on critical characteristics, sample size planning.
5. Ongoing inspection — In-process checks, patrol routes, SPC data entry.

Each bucket gets a labor rate (programmer vs. operator) and a machine rate (CMM hourly cost including depreciation, maintenance, and calibration contracts).

Use the Drawing to Drive the Quote, Not the Conversation

When the RFQ lands, parse the print for inspection triggers:

• GD&T callouts (position, profile, runout) = multi-axis CMM routines.
• AS9102 / PPAP / FAI requirements = report template selection and data formatting time.
• Critical characteristic symbols (CC, SC) = capability study scope.
• Material cert specs (heat lot traceability, CMTR review) = receiving inspection time.

Build a checklist that your estimator ticks off during quote prep. If the customer hasn’t specified FAI level, ask — don’t assume Level 1.

Automate the Repeatable Parts

Shops running Solvi can embed inspection templates directly into the quoting engine. When a new RFQ hits, the system reads the selected process (CNC 5-axis, DMLS, sheet metal) and suggests default inspection buckets — programming hours, FAI report type, CMM machine rate — pre-loaded from your historical data. The estimator adjusts quantities, not structure.

This turns a 30-minute guess into a 3-minute selection, and the same logic flows into the MES so the quality team sees the exact inspection plan the quote promised.

Track Actuals to Sharpen the Next Quote

Capture real time against each bucket: CMM programming actuals vs. estimate, FAI report hours, scrap/rework triggered by inspection findings. Feed that back into your rate cards quarterly. If your gauge R&R studies consistently run 40% over, adjust the template — don’t keep eating the variance.

Communicate the Value to the Customer

Line-item the inspection breakdown on the quote. Customers who see “CMM Programming: 4 hrs @ $120/hr” and “FAI Report AS9102 Level 2: 3 hrs” understand what they’re buying. It also makes scope changes explicit — when they add a critical characteristic mid-project, you have a basis for the change order.

Conclusion

Inspection isn’t overhead — it’s a manufactured deliverable with measurable inputs. Quote it like one. If you’re ready to stop guessing and start building inspection into every quote automatically, Solvi helps digital manufacturers embed quality planning into the quoting engine so nothing slips through the cracks.