AIRSPRAYTECH ACADEMY
Finishing Quality - From Spec to Sign-Off | Article 28 of 28
Your Vendors Are Part of the Quality Team
The most underused technical resource in many finishing plants is already on the approved-vendor list.
A finishing operation depends on more than the employees working inside the plant. Coatings, pretreatment chemicals, application equipment, compressed-air systems, filters, ovens, conveyors, water-treatment equipment, laboratory instruments, and many other products come from outside organizations.
Those suppliers know their products, equipment, and technologies. They see applications and problems across many facilities. Yet their experience is often used only when something fails or when a salesperson arrives with a new product.
A strong quality organization treats key vendors as technical members of the extended quality team. It asks them to understand the process, contribute ideas, identify risk, support training, respond to problems, and explain how they plan to support the business.
Shop-floor rule:
Do not wait for a failure to introduce your vendors to one another or to the people operating the finishing line.
Build an Extended Vendor Team
The appropriate vendor group depends on the facility and its processes. Possible participants include:
- Liquid-coating and powder-coating suppliers
- Pretreatment and cleaning-chemical suppliers
- Spray-gun, pump, and application-equipment suppliers
- Powder booths, feed systems, and recovery-equipment suppliers
- Liquid spray-booth and ventilation suppliers
- Oven, burner, and temperature-control suppliers
- Conveyor, racking, masking, and material-handling suppliers
- Compressed-air and air-treatment specialists
- Process-water and wastewater-treatment suppliers
- Filtration suppliers
- Laboratory-instrument and calibration providers
- Independent testing laboratories
- Environmental, safety, automation, and maintenance specialists
Not every supplier must attend every discussion. Select vendors whose materials, equipment, or services affect the issues and opportunities being reviewed.
Hold a Semiannual Vendor Roundtable
Invite key vendors to a structured roundtable twice each year. Six months is usually enough time for operating trends to develop and short enough to keep improvement actions moving.
The meeting should not be a parade of sales presentations. It should be a working session focused on process performance, future requirements, technical support, training, reliability, and risk reduction.
Additional meetings may be needed after a major process change, facility expansion, new product launch, serious quality failure, repeated downtime, or important regulatory development.
Choose the Right Facility Participants
The host team should include people who understand the work and people who can approve action.
Facility participants may include:
- Applicators and line operators
- Pretreatment and water-treatment personnel
- Material-mixing personnel
- Oven and conveyor operators
- Maintenance technicians
- Laboratory and quality personnel
- Engineering and process personnel
- Production supervision
- Purchasing and supplier-quality personnel
- Environmental and safety personnel
- Management with authority to commit resources
Do not fill the room with management while leaving the applicators outside running the line. Their observations and questions are essential to the discussion.
Prepare Before the Meeting
Send the agenda and relevant information in advance. Vendors can provide better answers when they have time to involve the right technical people and review the evidence.
Useful advance information may include:
- Current production requirements and expected changes
- Quality, reject, repair, and rework trends
- Recurring equipment or material problems
- Downtime and maintenance history
- Customer complaints and field failures
- Process data and laboratory results
- Open corrective actions
- Training and technical-support needs
- Upcoming product, volume, or specification changes
Protect confidential customer, pricing, formulation, and business information. Establish appropriate confidentiality expectations before sharing sensitive material.
Walk the Process
When practical, begin the roundtable with a controlled walk through the finishing operation. Let vendors see how materials and equipment interact.
The process walk may include:
- Receiving and material storage
- Racking, masking, cleaning, and pretreatment
- Water-treatment and rinse systems
- Paint mixing or powder feed
- Application booths and equipment
- Compressed-air and filtration systems
- Flash areas, ovens, and conveyors
- Laboratory and inspection stations
- Repair, rework, packaging, and shipping areas
Follow all facility safety, security, confidentiality, and visitor requirements. Vendors should be accompanied by authorized personnel.
Let Operators Explain the Work
Ask applicators and operators to explain what they do, what changes they notice, what adjustments they make, and where the process gives them trouble.
Their observations may include:
- Material that sprays or fluidizes differently
- A recurring difficult-to-coat area
- Pressure, flow, or temperature variation
- Filters or nozzles requiring frequent attention
- Racks and hooks creating grounding or coverage problems
- Equipment controls that are difficult to understand
- Maintenance problems that repeatedly return
- Inspection information that arrives too late
Vendors may recognize relationships that are difficult for one department to see by itself.
Use a Structured Roundtable Agenda
- Review actions from the previous meeting. Close completed work and explain overdue items.
- Review business and production changes. Discuss new products, volumes, customers, specifications, and schedules.
- Review safety and environmental concerns. Discuss materials, equipment, emissions, water, waste, and workplace risks.
- Review quality performance. Examine defects, rework, scrap, customer complaints, and process trends.
- Review equipment reliability. Discuss downtime, maintenance, parts availability, and aging systems.
- Review material performance. Discuss variation, shelf life, storage, application, cure, and supplier changes.
- Review process-control gaps. Identify missing measurements, instruments, alarms, or records.
- Review training needs. Identify operator, maintenance, laboratory, and safety training.
- Discuss technical and regulatory developments. Identify changes that may affect the facility.
- Ask each vendor for recommendations. Give every technical partner time to contribute.
- Request a six-month support plan. Define what each vendor will do before the next meeting.
- Assign actions and dates. Record owners, resources, deliverables, and follow-up.
Ask Better Questions
General questions produce general answers. Ask questions tied to the actual process.
Useful questions include:
- What changes in our data concern you?
- Where do you see preventable risk?
- What are we measuring that we are not using?
- What important condition are we not measuring?
- What maintenance should occur before failure?
- What training should our operators receive?
- What spare parts should we keep?
- What product or technology changes should we expect?
- How can your company help reduce our defects, downtime, material use, or energy consumption?
- What will your company commit to completing before the next roundtable?
Request a Six-Month Vendor Support Plan
Each key vendor should provide a practical plan for supporting the facility until the next roundtable.
The plan may include:
- Scheduled technical visits
- Process reviews or audits
- Operator and maintenance training
- Laboratory or product testing
- Equipment inspection and preventive maintenance
- Spare-parts and emergency-support planning
- Material or process trials
- Data review and trend analysis
- Documentation and technical-data updates
- Energy, waste, and material-efficiency projects
The plan should identify the vendor representative, facility contact, action, target date, expected result, and evidence of completion.
Coordinate Vendors Across the Process
Finishing problems often cross supplier boundaries. A coating supplier may blame pretreatment. A chemical supplier may blame the substrate. An equipment supplier may blame material viscosity. An oven supplier may blame loading.
The roundtable gives these specialists an opportunity to examine the same evidence together.
For example:
- The coating supplier and oven specialist can review cure data together.
- The chemical supplier and water-treatment vendor can review rinse quality and pretreatment performance.
- The application-equipment supplier and compressed-air specialist can investigate unstable atomization.
- The powder supplier, equipment supplier, and racking specialist can review transfer and grounding problems.
- The instrument provider and quality team can review questionable measurements.
The facility remains responsible for the final process decision, but coordinated vendor input can shorten the path to the right answer.
Ask Vendors to Support the Operators
Technical support should reach the people doing the work. Request practical instruction on material handling, equipment setup, cleaning, maintenance, troubleshooting, testing, and process adjustment.
Training should use the facility's actual materials, equipment, parts, specifications, and problems whenever possible.
Record who was trained, what was covered, who provided the instruction, and whether the employee demonstrated the required skill.
Build an Emergency-Support Plan
Do not wait for a line shutdown to discover that the technical representative is unavailable or that a critical replacement part has a long lead time.
The support plan should identify:
- Primary and backup technical contacts
- Normal and after-hours contact methods
- Expected response time
- Remote troubleshooting capability
- Availability of field service
- Critical spare parts and recommended inventory
- Sample collection and emergency laboratory support
- Escalation path for unresolved problems
Confirm this information periodically. An emergency contact list is not useful when it contains people who changed jobs two years ago.
Review Supplier Change Control
Ask vendors how they notify customers of changes that could affect the finishing process.
Possible changes include:
- Material formulation or raw-material source
- Manufacturing location
- Product specification or test method
- Packaging or shelf life
- Equipment design, software, or control logic
- Recommended operating or cure conditions
- Service, repair, or spare-parts availability
- Regulatory, safety, or environmental information
The facility should review and approve significant changes before using the changed product or process for customer work.
Use Vendor Scorecards Carefully
A scorecard can help organize supplier performance, but it should measure more than price and on-time delivery.
Consider:
- Material and equipment quality
- Delivery and availability
- Technical response time
- Corrective-action quality
- Training and field support
- Change notification
- Documentation accuracy
- Completion of roundtable commitments
- Contribution to process improvement
Share relevant results with the vendor and allow discussion. The purpose is to strengthen performance, not merely produce a ranking.
Keep the Meeting from Becoming a Sales Event
New products and technologies may deserve discussion, but every recommendation should be connected to an identified need or improvement opportunity.
Require proposed changes to include:
- The problem being addressed
- Expected technical and business benefit
- Process and customer-approval requirements
- Trial plan and acceptance criteria
- Safety and environmental review
- Training, maintenance, and spare-parts needs
- Total implementation and operating cost
A roundtable should produce better decisions, not a collection of brochures.
Record Commitments and Follow Through
Meeting notes should capture decisions, open questions, assigned actions, responsible owners, target dates, and required evidence.
Distribute the action list promptly. Review progress between meetings instead of waiting six months to discover that nothing happened.
Begin the next roundtable by reviewing every previous commitment. Close actions only when the promised work is complete and its result has been evaluated.
Measure the Value of the Roundtable
Evaluate whether vendor participation is improving the process.
Useful results may include:
- Reduced defects, rework, scrap, and downtime
- Improved process stability and product performance
- Faster technical response
- Improved preventive maintenance
- Better operator and laboratory training
- Reduced material, energy, water, or waste cost
- Improved documentation and change control
- Fewer repeated failures and customer complaints
- Successful controlled introduction of new technology
If a vendor repeatedly attends but does not provide useful support or complete commitments, address the performance through the supplier-management process.
Finishing Quality Does Not End at Sign-Off
Final product acceptance confirms that a production lot met its requirements. It does not mean the quality process is finished.
The internal quality team should continue reviewing data, defects, maintenance, customer feedback, and improvement opportunities. The extended vendor team should continue providing technical knowledge, training, service, and plans for future support.
The best finishing organizations do not wait for a failure to begin a conversation. They build relationships, share useful evidence, challenge assumptions, and prepare for what comes next.
The Takeaway
Treat key vendors as technical partners in the quality process. Bring them together at least twice each year, include the people doing the work, review real process data, ask direct questions, request six-month support plans, assign responsibilities, and verify results.
Your vendors know their materials, equipment, and technologies. Your employees know your process and products. Put that knowledge at the same table.
The course may end with Article 28. The work of quality does not.
Measure It. Track It. Test It. Prove It.
Copyright 2026 Azimuth Spray Systems, LLC. All rights reserved.
