Quality

Quality is controlled through the process—not inspected in at the end.

We use practical manufacturing quality tools to manage variation before production, verify critical features during production, and respond systematically when a nonconformance occurs.

5M1EFAIControl PlanFishbone5 Why8D
PROCESS CONTROL5M1ESix practical inputs that influence process stability and product quality.
ManSkills · training · quality awareness
MachineEquipment · fixtures · process capability
MaterialGrade · certificates · batch identification
MethodRouting · setup · work method · control points
MeasurementInspection method · gauges · recorded results
EnvironmentWorkplace order · cleanliness · handling conditions

01 / Prevent Before Production

Start with the drawing, then plan the controls.

Quality planning begins before chips are cut or metal is poured. The objective is to identify what can go wrong, decide what matters most, and choose a practical way to verify it.

Drawing ReviewUnderstand the requirementTolerances, GD&T, material, finish, threads, appearance and special notes are reviewed before release.
Critical FeaturesFocus control where it mattersTight bores, runout, sealing surfaces, intersecting features and other risk points receive defined inspection attention.
Process & Inspection PlanMatch the route to the riskManufacturing sequence, fixturing and inspection method are selected around the drawing—not added after production.
First ArticleVerify before repeat productionKey requirements are checked on first-off or sample parts before the order proceeds into repeat production.

02 / Control During Production

The Control Plan is a working instruction—not just a PPAP document.

Once production starts, inspection is carried out at defined stages and frequencies. The purpose is to control the process while parts are being made, so an out-of-spec condition is found and contained before it can continue downstream.

01

Incoming Material

Verify the material before release. Grade, specification, identification and required certificates are checked before production starts.
02

First Piece

Confirm the process before repeat production. Defined dimensions and critical characteristics are verified before normal production continues.
03

In-Process

Check the process while it is running. Controlled characteristics are checked at the frequency defined by the Control Plan and process risk.
04

Last Piece & Final

Confirm the process remained stable. Final checks verify that critical requirements remained acceptable through the production run.
05

Next Operation

Only accepted product moves forward. Released parts continue to the next process or shipment; nonconforming product leaves the normal flow.

Reaction Plan

Out of specification means stop, contain and decide—not “keep running and sort it later.”

When a check does not meet the requirement, the affected product is controlled under the nonconforming-product process before production or shipment is allowed to continue.

Hold Segregate Identify Scope Disposition Rework / Scrap Re-inspect Release
Inspection frequency is project-specific. Sampling and check frequency follow the Control Plan, drawing requirements and process risk rather than one fixed rule for every part.

03 / When Something Goes Wrong

A defect is not closed by replacing the part.

Manufacturing problems can occur. Our responsibility is to contain the risk, understand why it happened, correct the process and verify that the action prevents recurrence.

ROOT-CAUSE ANALYSISFishbone / 5M1EPotential causes are structured before evidence is used to verify the actual root cause.
Man
Machine
Material
Method
Measurement
Environment
Nonconformance
01ContainIdentify affected material, isolate suspect stock and protect the customer from further exposure.
02DefineDescribe the defect clearly—part, feature, lot, quantity, timing and evidence.
03Find Root CauseUse Fishbone / 5M1E and 5 Why thinking, then verify the cause with process evidence.
04CorrectChange the process, tooling, work method, material control or inspection point that allowed the problem.
05Verify & Prevent RecurrenceConfirm the corrective action works, then update the relevant control or instruction where needed.
8D corrective-action supportFor customer complaints or significant nonconformances, an 8D-style response can document containment, root-cause analysis, corrective action, verification and recurrence prevention.
How the 8D response is structured

D1 Team · D2 Problem Definition · D3 Interim Containment · D4 Root Cause · D5 Corrective Action Selection · D6 Implementation & Validation · D7 Prevent Recurrence · D8 Closure.

04 / Evidence & Documentation

Make the result reviewable.

When the project requires records, the evidence should travel with the manufacturing process—from material confirmation and first article results to production inspection and corrective-action documentation.

MaterialMaterial Certificates
InspectionDimensional Reports / FAI
ProductionProcess Flow / Control Plan
Customer RequirementsPPAP / PSW Support
Problem Solving8D Corrective-Action Report

Documentation scope is matched to the drawing, order and customer requirement rather than treated as a fixed package for every job.

Have a drawing ready?

Send the drawing, material, quantity, finish and delivery requirement. We will review the manufacturing route and identify any important assumptions before quoting.