As a customer, how can I see the specific application of PDCA in my project?

In Plan, define the problem, baseline, material, process, geometry, service condition, acceptance threshold, test method, owner, and evidence. In Do, run the controlled build; in Check, inspect and compare; in Act, standardize only an approved result. A customer can see PDCA through an agreed project plan, milestone updates, process records, inspection results, deviation decisions, and the final disposition package. Visibility depends on the contract and confidentiality scope; a status message alone is not quality evidence. Ask which records are shared for the material, process, geometry, final condition, and acceptance plan. A customer can see PDCA through an agreed record set: the project baseline, risk review, process plan, milestone updates, inspection report, deviation record, and final disposition. The shared package should identify what was measured and which criteria were applied. Confidential design data and unrelated production records remain outside the agreed scope.

Phase 1: Collaborative Planning and Definition

During Plan, review the drawing revision, critical features, grade, process, orientation, load, environment, final state, test method, and acceptance threshold. The customer and supplier should approve the baseline before production or a pilot build begins.

• What You See: You receive a project plan.

  • Technical Specifications: It defines the critical-to-quality dimensions, material, process, target properties, evidence, owner, and decision points. For example, Titanium Alloy may be selected for a low-density route and Resins for a detail-oriented prototype; confirm the grade, condition, and acceptance criteria.

  • Process Selection: The plan should explain why Powder Bed Fusion or Vat Photopolymerization fits the geometry, material, feature scale, final condition, and inspection plan. The process choice remains subject to engineering review.

  • Quality Plan: The plan should identify inspection methods, report format, acceptance criteria, and the scope of material certification records. Confirm which records are included before approval.

• Your Role: You provide feedback and formally approve the plan. Your domain knowledge helps confirm that controls align with the part's end use, including Aerospace and Aviation or Medical and Healthcare. The approval should identify material, process, critical features, evidence package, and decision owner.

Phase 2: Transparent Execution and Initial Validation

During Do, agreed updates may cover build preparation, machine status, material lot, monitoring, heat treatment, machining, and witness coupons. The shared record should identify deviations and distinguish planning evidence from final acceptance evidence.

• What You See:

  • Build Preparation Report: Before production, the team may share images of nested parts, orientation, and supports. Treat the image as a planning record and verify the final geometry against the drawing.

  • In-Process Updates: The record may include photos or data logs for build start, atmosphere, monitoring, and other parameters when the project scope permits. Confirm the record against the applicable specification.

  • First-Article Coupons: The coupons may be built alongside production parts when the agreed plan requires process evidence. Match the coupon condition, orientation, test method, and acceptance criterion to the production route.

• Your Role: You receive agreed status and evidence updates, but visibility does not replace the inspection report or release decision.

Phase 3: Data-Driven Inspection and Reporting

During Check, request the dimensional result, defect evidence, mechanical result, surface result, and disposition. Compare each result with the approved target and record the method, sampling plan, threshold, and responsible reviewer.

• What You See: You receive comprehensive inspection reports, which are the cornerstone of the "Check" phase. These may include:

  • Dimensional Report: CMM or scan data may verify defined drawing tolerances. Confirm the datum scheme, final condition, temperature, sampling, and disposition rather than treating a report label as acceptance.

  • Material Certs: The certificate identifies the supplied material and its certificate scope. Connect it to the lot, build, final condition, test method, and acceptance decision.

  • Visual Inspection Photos: The photos may show the final part before and after Surface Treatment when the surface comparison is relevant. The images supplement, but do not replace, dimensional and surface measurements.

  • Data on Post-Processing: The record should identify the required steps, such as heat treatment or CNC Machining, and their records. Confirm the grade, schedule, final condition, and acceptance method.

• Your Role: You review the data and compare it with the approved target. Record the acceptance, hold, rework, reject, or deviation decision.

Phase 4: Iterative Improvement and Final Delivery

During Act, review release, rework, deviation approval, corrective action, and the updated work instruction. Medical or aerospace use still requires project-level qualification and regulatory review.

• What You See:

  • If Everything is to Spec: The "Act" stage closes the cycle only after the required evidence is complete, acceptable, and linked to the final disposition. Do not describe parts as certified unless the applicable certificate and approval scope are present.

  • If a deviation occurs, compare Electropolishing with Sandblasting against the surface target and measured result. The corrective action should state the test condition, acceptance threshold, approval owner, and disposition.

• Your Role: You approve the corrective action or final delivery within the agreed authority. Your feedback can define the next PDCA cycle, but it does not replace objective evidence.