Manufacturing

Manufacturing13 Aug 2026 · 8 min read

PPAP PFMEA Assessment and Process Risk Control

A comprehensive handbook for assessing PFMEA completeness, action planning, special characteristics, mistake-proofing, subcontract risk and linkage to process flow and control p…

PPAP Process Documentation, Work Instructions and Training

A handbook for assessing operator/process documentation, setup instructions, troubleshooting, visual aids, training, cross-training, maintenance and nonconforming-product contro…

PPAP Process Flow Diagram Assessment

A detailed handbook for assessing manufacturing process flow from purchased material through production, inspection, rework, alternate processes, subcontracting, packaging, ship…

PPAP Qualified Laboratory Documentation

A handbook for internal and external laboratory scope, accreditation/approval evidence, test traceability, actual data, special characteristics and correlation studies in PPAP.

Manufacturing13 Aug 2026 · 11 min read

PPAP Special Characteristics Traceability Across APQP Documents

A cross-document handbook for tracing special characteristics from design and risk analysis through process flow, PFMEA, control plan, MSA, capability, testing and subcontract c…

PPAP Submission Assessment: Planning a Robust Approval Package

A handbook chapter for planning, reviewing and assessing a PPAP submission, including APQP evidence, team engagement, document control, submission level, resubmission logic and …

Process Capability: Cp and Cpk for Manufacturing

How Cp and Cpk compare process spread and centring with specification limits, when capability analysis is meaningful, and how to interpret common capability patterns.

SIPOC Diagrams for Manufacturing Process Scoping

How to build and use a SIPOC diagram to define suppliers, inputs, process boundaries, outputs, customers and cost drivers before detailed process analysis.

Spring Design for Assembly: A Practical DFA Checklist

A manufacturing-focused Design for Assembly checklist for compression springs covering assembly environment, OD expansion, end type, spring index, solid height and real-line val…

Statistical Process Control (SPC) Charts for Manufacturing

SPC fundamentals for monitoring process stability, distinguishing common and special causes, and using control limits with reaction plans.

The Cost Commitment Curve: Why Design Has the Most Cost Leverage

Explains the manufacturing cost-commitment curve and why early design decisions have greater influence on lifetime manufacturing cost than late production optimisation.

The Eight Wastes of Lean Manufacturing (DOWNTIME)

A practical manufacturing guide to the eight Lean wastes—Defects, Overproduction, Waiting, Non-utilized talent, Transportation, Inventory, Motion and Extra-processing.

The Five-Step Shop-Floor Improvement Method

A practical improvement workflow combining time study, jig design, standard work, ERP/routing updates and re-measurement.

The Hidden Cost of Micro-Inefficiencies

Quantifies how small daily delays can compound into major annual productivity losses and shows how to build a defensible micro-waste business case.

Tolerance Specification and Manufacturing Cost

How tolerance choices affect machine capability, tooling, inspection, rejection and supplier pricing—and how to specify tolerances from function rather than habit.

Value Stream Mapping for Manufacturing Flow

A practical guide to current-state and future-state value stream mapping, including material flow, information flow, inventories, cycle time and value-added versus non-value-add…

Voice of the Customer to Critical-to-Quality (CTQ)

How to translate customer language into measurable CTQ requirements, specification limits and verification methods for manufacturing and product development.

Why Spring Design Creates Assembly Problems—and Cost

How spring geometry, clearance, end condition, solid height and handling can create assembly delay, rework and rejection.