Optical metrology0.01 mmCritical-area geometry requirementOne-tool finish · Protected feature edges
Optical calibration plate
6061-T6 aluminum · Surface geometry · Matte black anodizing
Optical metrologyRead project
CNC Machining
Case Studies
Manufacturing experience, explained through the work. Our team has tackled optical surface control, hidden micro-hole burrs, plastic-part distortion and finishing variation. These project accounts show the problem, the process changes and the result.
Projects that show how we solve manufacturing problems
Internal feature inspectionØ0.50 mmCross-hole diameterSmall holes first · Two-angle inspection
Stainless steel collimator tube
AISI 416 · Micro cross-holes · Internal burr control
Precision instrumentsRead project
Finishing consistencyBatch controlFrom material selection to final appearanceTraceability · Pretreatment · Anodizing
Consistent anodized aluminum finishes
Material traceability · Surface preparation · Batch control
Machining & finishingRead project
Dental assemblyBlack POMThin-wall frame with snap-fit featuresSupport · Clamping · Stable engagement
Delrin dental assembly component
Black POM · Thin walls · Snap-fit stability
Dental equipmentRead project
Optical calibration plate: controlling the measurement surface
Optical metrology0.01 mmCritical-area geometry requirementOne-tool finish · Protected feature edges
Project control points
- Flatness and parallelism in the measurement area
- Continuous finishing with one tool
- Sharp measurement-feature edges
- Metrology report and calibration labeling
An optical measurement-system customer needed an aluminum calibration plate with a stable reference surface and clearly defined raised measurement features. The critical area required flatness and parallelism control within 0.01 mm, together with a uniform matte black finish.
The challenge: geometry had to survive finishing
Small steps between tool passes, rounded feature edges or uneven surface treatment could affect the calibration surface. We treated the reference area and its raised features as a single manufacturing priority, carrying their requirements through machining, anodizing and inspection.
What we changed in the machining and finishing route
We controlled material removal during roughing, added stress relief and left a small, consistent finishing allowance. One tool completed the final pass across the critical region. Manual deburring was excluded from the raised measurement edges, while blasting and anodizing preparation were controlled to protect those edges and achieve the required black finish.
Result: the calibration requirements were met
The completed plate met the customer’s calibration requirements. Inspection covered the critical geometry before anodizing and the surface condition afterward. The handover included the requested measurement report and calibration labels, linking the finished part to the customer’s inspection procedure.
416 stainless steel tube: finding burrs that normal gauging missed
Internal feature inspectionØ0.50 mmCross-hole diameterSmall holes first · Two-angle inspection
Project control points
- Ø0.50 mm cross-hole intersections
- Inspection before main-bore gauging
- Microscope checks from two angles
- Cleaning, drying and corrosion protection
A collimator tube combined stepped internal bores with 0.50 mm side holes. The difficult area was inside the part, where the small holes intersected the bore. Burrs at those intersections could remain even when the main bore appeared acceptable.
The challenge: the gauge could hide the defect
Checking the main bore first pushed some burrs back into the small cross-holes. The inspection sequence could therefore conceal the condition it was supposed to detect. We changed the inspection order to address the small-hole intersections before gauging the larger bore.
What we changed in deburring and inspection
We checked the small side holes first with micro pins or probes, used targeted tools at the intersections and examined the parts under a microscope from two angles. Additional in-process checks focused on these micro-features. Finished parts were cleaned, dried and protected against corrosion before shipment.
Result: hidden burrs were removed before delivery
The revised sequence exposed burrs before main-bore gauging could displace them. Inspection from two directions verified the intersections after deburring, and the parts were delivered with the burrs removed.
Anodized aluminum: improving consistency across production batches
Finishing consistencyBatch controlFrom material selection to final appearanceTraceability · Pretreatment · Anodizing
Project control points
- Alloy, condition and material-batch traceability
- Machined surface and pretreatment consistency
- Racking, bath and dye-process controls
- Approved finish references and batch inspection
A customer needed CNC machined aluminum components with a consistent anodized appearance across multiple batches. Differences in color depth, localized spots and variation between samples and production parts made repeatability a central acceptance concern.
The challenge: color variation started before the dye bath
We traced color variation through incoming material, machining marks, deburring, cleaning, etching, electrical contact and finishing conditions.
How we controlled the production route
The improvement work combined material traceability, consistent surface preparation and tighter control of anodizing and dyeing conditions. Racking contact and part spacing were included in the review, and finish samples and batch inspection records provided a common basis for appearance checks.
Result: more consistent samples and production parts
The changes reduced color variation and improved repeatability between samples and production batches.
Black Delrin frame: stabilizing thin walls and snap-fit features
Dental assemblyBlack POMThin-wall frame with snap-fit featuresSupport · Clamping · Stable engagement
Project control points
- Support retained during machining
- Balanced clamping and finishing loads
- Controlled deburring of flexible features
- Tab alignment and stability after unclamping
A dental equipment component had an open frame, thin walls and integrated snap-fit tabs. After machining and release from the fixture, movement around the flexible features affected alignment and engagement. The project required stable assembly geometry as well as the specified surface finish.
The challenge: acceptable dimensions in the fixture were not enough
Our review identified several interacting causes: localized clamping pressure, early removal of support material, unbalanced cutting loads and force applied during manual deburring. Together, these factors made the open frame and its tabs sensitive to movement after unclamping.
What we changed in the process
We revised the sequence to retain support material until later operations, redistributed fixture contact and reduced finishing loads. Balanced finishing passes limited uneven material removal. A controlled edge-finishing method reduced force on the snap-fit tabs, followed by checks of alignment, parallelism and stability after release.
Result: improved engagement and production repeatability
The revised process reduced snap-fit deformation and stabilized functional tab alignment. The customer received more consistent components for assembly, with improved repeatability between batches.
Build the acceptance plan around your part
| Record | Check | Acceptance scope |
|---|---|---|
| Material identification | Grade, condition, batch | Dimensions and function checked separately |
| Dimensions | Drawing revision, feature IDs, inspection scope | Specified features and sample count |
| Surface treatment | Coating, heat treatment, controlled surfaces | Final dimensions after treatment |
| Sample approval | Sample revision, checks, open points | Approval and later changes |
| Repeat order | Revision, changes, order records | Requirements for the new batch |
Documents to Discuss for Your Project
Material and batch recordsCritical-feature inspection reportTreatment / coating recordsSample approval reviewRevision control for repeat orders
From the first drawing to repeat production
Review the released drawing
Agree the material, revision, quantities and the features that determine whether the component works. Identify unanswered questions before production is released.
Decide what the sample must prove
Set the checks, documents and assembly trials needed for approval. Confirm who measures the part and who reviews any open points.
Record approval and any changes
Link approval to the inspected sample and released revision. A proposed change to geometry, material or finishing needs an explicit decision.
Define the next batch
Confirm the quantity, revision, inspection scope and delivery arrangement again. Keep agreed changes visible rather than relying on a previous conversation.
Questions about our project experience
What manufacturing experience do these projects demonstrate?
They cover completed work on optical calibration surfaces, stainless steel micro-features, anodized aluminum finishes and thin-wall Delrin assemblies. Each account describes the manufacturing problem, the changes made and the resulting improvement. Customer names and identifying drawing details are omitted.
Can you discuss a part that is not shown here?
Yes. Send your drawing or a short description with the material, quantity and critical features. We will review the machining route, finishing needs and inspection requirements with you.
Can you share evidence from a similar project?
Tell us which material, feature or manufacturing issue you need to evaluate. We can discuss relevant experience and review what project information can be shared while protecting customer designs.
What should I send before requesting a quote?
Start with the drawing and model revision, material grade and condition, quantity, finishing requirements and any approval or inspection documents you need. Explain the role of critical features and attach an assembly view when it helps clarify the requirement.
How do you coordinate specialist production?
When a project calls for a specialist production partner, we discuss the proposed arrangement before order placement. The production scope, inspection responsibilities, communication route and commercial terms are agreed for your project.
Do I need to send confidential drawings immediately?
No. Begin with a non-sensitive description. Agree confidentiality, access permissions and a suitable transfer method before sharing restricted files.
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