Conformal Coating Removal & Rework Hub

Conformal coating removal methods, micro-abrasion & PCB rework workflow

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This conformal coating removal and rework hub brings together practical guides on stripping and repairing coatings. Learn where to apply solvent removal, when to use precision micro-abrasion, and how to run reliable Parylene reworkβ€”while keeping PCB quality and traceability intact.

External resource: Β IPC-7711/21 Rework & Repair

Infographic illustrating conformal coating removal and rework processes, with icons for wet chemical stripping, micro-abrasion, Parylene removal, and PCB rework workflow.

Ultimate Conformal Coating Removal Guide (UK & Europe)

A practical, UK/EU-focused reference for selecting safe conformal coating removal methods. Covers identification, solvent vs mechanical vs micro-abrasion decision-making, Parylene considerations, risk controls, inspection and recoat planning.
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Identify Unknown Conformal Coatings (IPC-7711 Method)

If the coating type is unknown, the biggest risk is choosing the wrong removal method and damaging the assembly. This guide explains IPC-7711 behaviour-based identification (visual cues, hardness, IPA response and controlled heat response) to plan safe removal and recoat strategy.
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Solvent-Based Conformal Coating Removal (UK & Europe)

Solvent-based removal can be safe and efficient for certain coating chemistries (especially many acrylics), but it carries compatibility and residue risks if applied by trial-and-error or aggressive immersion.

This guide explains when solvents are appropriate, why β€œlocal-only” delivery is preferred on populated assemblies, how to control plastics/inks/labels risk, and when to stop and escalate to micro-abrasion for repeatable access windows.
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Thermal Removal / Controlled Heat Softening

Thermal (heat-softening) removal is sometimes discussed in the context of rework practices, but on modern populated PCB assemblies it can carry elevated risk if applied without tight control and validation.

This guide takes a conservative position: it explains where controlled heat may be observed as part of behaviour-based identification and limited local trials, outlines the practical hazards (component bodies, plastics, labels/inks, solder mask sensitivity, collateral heating and unknown material responses), and provides clear stop rules for when to move to a more controllable method. Where thermal behaviour is unpredictable or the assembly is high value / safety critical, escalation to precision micro-abrasion is often the safer and more repeatable route.
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Coating Removal Methods

Use solvent stripping for compatible liquid coatings (e.g., acrylics, some urethanes) where you can soften and lift the film for controlled cleaning. Choose precision micro-abrasion when you need local access on sensitive areasβ€”expose test points or connector rows without damaging the PCB.
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Inside the Micro-Abrasive Blasting Process

Go beyond β€œwhen to use” and learn how micro-abrasion works. This deep dive explains media selection (including VanAcrylic), air pressure and flow, nozzle geometry, standoff and angle, plus ESD-safe technique for reliable pad exposure and minimal risk to solder mask.
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Micro-Abrasive Media Selection Guide (Conformal Coating)

Correct abrasive selection is critical for controlled coating removal without substrate damage. This guide explains how to select media type (including VanAcrylic plastic abrasive), particle size, hardness, and cleanliness discipline based on coating type, PCB sensitivity, boundary control requirements, and rework risk.
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Removal & Rework: Precision Micro-Abrasion

Parylene does not dissolve in standard solvents. A tuned micro-abrasive blasting recipeβ€”media selection, pressure, nozzle, and angleβ€”gives controlled access for solder repair and modification while protecting pads, solder mask, and component bodies.
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Rework Workflow

Run a validated sequence: confirm the defect, remove coating locally or fully, complete the electrical/mechanical repair, clean and verify, then re-coat to restore protection and documentation traceability.
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Local vs Full Stripping

Choose localised removal to minimise time and risk when you only need targeted access. Move to full stripping when failures are widespread, coatings are incompatible with the next process, or redesign demands a clean start.
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Need Process Support?

Optimising electronics coating methods takes the right materials, equipment, and operator training. Partner with SCH Services for:

Why Choose SCH Services?

Partnering with SCH Services gives you a complete, integrated platform for Conformal Coating, Parylene & ProShieldESD Solutionsβ€”plus equipment, materials, and training backed by decades of hands-on expertise.

  • ✈️ 25+ Years of Expertise – Specialists trusted worldwide.
  • πŸ› οΈ End-to-End Support – Chemistry/process selection, masking strategies, inspection, and ProShieldESD integration.
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  • 🌍 Global Reach – Responsive support across Europe, North America, and Asia.
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πŸ“ž Call: +44 (0)1226 249019 | βœ‰ Email: sales@schservices.com | πŸ’¬ Contact Us β€Ί

Note: This hub provides general technical guidance only. Conformal coating identification and removal outcomes depend on coating chemistry, cure state, age, thickness, assembly materials, component types, and process controls. Always validate any removal method (solvent, thermal, mechanical, or micro-abrasive) using controlled trials on a non-critical area first, and confirm ESD controls, cleanliness/inspection criteria, and recoat requirements against customer specifications and the applicable standards before production rework.