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Documentation / PCB

Review the board in 3D

Audit model coverage, orientation, board-side placement, and enclosure risk without treating a rendered view as mechanical sign-off.

Level
Intermediate
Estimated
12 min
Instructions updated
2026-07-12
Product context
Updated for the July 12, 2026 web release

Outcome

Identify obvious orientation, height, model, and enclosure risks before formal mechanical validation.

Before you start

  • A populated PCB
  • 3D models for critical components
  • Mechanical envelope or enclosure reference

Task record

Time
12 minutes
Level
Intermediate
Instructions updated
2026-07-12
Product context
Updated for the July 12, 2026 web release

Execution record

Prepare the role, starting state, and evidence record before acting.

Keep these records beside the project state so the task steps can stay focused on the action, passing result, and stop condition.
StepRequired roleStarting stateEvidence to retain
01 / Reconcile model coverageMechanical or component reviewer with project/PCB/3D read accessThe exact saved board, placed-reference count, critical-reference list, known provisional models, and one board landmark are frozen before 3D View opens.Board identity and landmark capture, BOM/board reference count, one-row-per-reference coverage table, status-specific captures, model source/status, and coverage arithmetic
02 / Inspect top and bottomMechanical reviewer with 3D read accessCoverage reconciliation is complete; the inspection list names every external interface, polarized reference, side, pin-one/mating direction, body seating, and required exposing view.Orientation-labeled top/bottom/oblique captures, per-reference side/orientation/seating rows, model status, source drawing, and exact preset names
03 / Check mechanical interfacesMechanical reviewer authorized to interpret the approved interface listCritical interfaces, five-tallest candidates, source revisions, datums, required dimensions/tolerances, and model status are listed before visual inspection.Interface/reference list, preset-labeled captures, visual Pass/Fail/Blocked status, model coverage, source requirement, and external measurement owner
04 / Compare the enclosure envelopeMechanical reviewer authorized to use the receiving CAD/drawing workflowBoard and enclosure revisions are paired; every required clearance has a value/tolerance and datum; Steps 1-3 retain model-status and visual context.Clearance matrix, paired revisions, external measurement/tool/result, datum/tolerance, visual-only references, blocked rows, and issue owners
05 / Export for independent validationRelease-capable PCB operator and independent mechanical reviewerThe saved board identity, required STEP schema/units/origin, empty destination directory, receiving tool/version, and dimensional checklist are recorded; no availability is assumed.Availability/control state, output settings, exact filename/size/checksum, generation result, receiving-tool open result, dimensional comparisons, model gaps, and reviewer
06 / Record the mechanical boundaryIndependent mechanical decision reviewerSteps 1-5 identify one board revision, complete model coverage, preset evidence, external dimension status, STEP status, and every issue owner.Signed coverage statement, all reference/interface/clearance rows, source/board revisions, capture filenames, external measurements, STEP artifact/status, issues, and decision

Procedure

Run the documented task in order.

Record an unavailable action or failed assertion; do not infer that the operation ran.
  1. 01

    Reconcile model coverage

    Action

    Compare the placed-footprint list with the 3D view. Record every missing, generic, or placeholder model, prioritizing connectors, controls, tall parts, shields, and mounting hardware.
    Resin Components Bill of Materials, PCB Editor, and 3D View / Components > Bill of Materials > reference list; PCB Editor > saved board; PCB Editor > 3D View: Open 3D View, confirm the outline and one unmistakable landmark, then classify every placed reference as Present, Missing, Mismatched, or Provisional

    Pass when

    Present plus Missing plus Mismatched plus Provisional equals the placed-reference count, with one model-status row per reference.

    Stop if

    Stop when 3D View is blank/errored, board identity or landmark differs, BOM/board counts disagree, duplicate references exist, or a visible body cannot be tied to one reference.

  2. 02

    Inspect top and bottom

    Action

    Use top, bottom, and oblique views to check board side, component orientation, pin-one direction, connector mating direction, and body-to-board position.
    Resin 3D View camera presets / PCB Editor > 3D View > camera presets > Top (F.Cu), Bottom (B.Cu), and an exposing oblique preset: Use Top (F.Cu), Bottom (B.Cu), Front/Back/Left/Right/Isometric as needed, and Screenshot (PNG) when available

    Pass when

    Every external interface and polarized component has a Pass, Fail, Blocked, or Not applicable side/orientation result with preset-labeled evidence.

    Stop if

    Stop the affected conclusion when preset orientation is ambiguous, a required reference is missing/provisional, the question is occluded, or model source/transform cannot support the observation.

  3. 03

    Check mechanical interfaces

    Action

    Inspect mounting holes, edge connectors, board edges, cutouts, keepouts, and at least the five tallest components against the mechanical requirements.
    Resin 3D View and approved mechanical requirement table / PCB Editor > 3D View > Front, Back, Left, Right, and Isometric; external requirement table > critical interfaces: Expose and inspect each mounting/edge/cutout/keepout relationship and five tallest represented references; do not measure dimensions from perspective

    Pass when

    Every critical interface and the five tallest represented bodies have a named visual disposition and a separate external dimensional-check requirement.

    Stop if

    Stop acceptance when an interface is occluded, a tall/critical model is missing or provisional, the board feature is absent, or the requirement lacks source/datum/tolerance.

  4. 04

    Compare the enclosure envelope

    Action

    Use the available enclosure or mechanical reference to identify likely wall, lid, boss, cable, and tool-access conflicts. Treat the view as screening evidence only unless exact geometry is present.
    Owner-approved mechanical drawing/enclosure viewer and Resin 3D observations / Approved enclosure/mechanical source > named revision/datum/clearances; compare with 3D View captures outside Resin: Pair each wall/lid/boss/cable/tool-access requirement with affected references and an external numeric measurement or Blocked disposition

    Pass when

    Every required clearance is classified Visual observation only, Dimension verified externally, or Blocked, and no screenshot is used as dimensional proof.

    Stop if

    Stop mechanical signoff when enclosure/board revisions are not paired, a dimension/datum/tolerance is missing, a model is provisional, or visual fit is being substituted for an external measurement.

  5. 05

    Export for independent validation

    Action

    When STEP is required, generate it from the recorded board state, open it in the receiving mechanical tool, and compare board outline, hole positions, connector locations, and critical heights.
    Resin Output & Export when a STEP control is exposed, plus an approved external mechanical tool / Named project > Project > Output & Export > STEP when available; downloaded file > approved receiving CAD tool: Record STEP availability first; when enabled and approved, generate once from the saved board, retain the file unchanged, open externally, and check outline/holes/connectors/heights

    Pass when

    The STEP requirement is either independently opened and dimensionally reconciled for the named board state, or explicitly Unavailable/Blocked with no export or fit claim.

    Stop if

    Stop when STEP is absent/disabled, generation is ambiguous/fails, more than one file appears, the file cannot be opened, units/origin are uncertain, or any critical geometry differs; do not substitute a fixture or screenshot.

  6. 06

    Record the mechanical boundary

    Action

    Save model gaps, orientation findings, measured conflicts, export filename, source revision, receiving tool, and reviewer. Do not label the design enclosure-ready from the Resin render alone.
    Controlled 3D/mechanical review record / Outside Resin > revision-bound model coverage and mechanical screening record: Finalize coverage, orientation, interface, clearance, STEP availability/result, issue, owner, reviewer, and bounded-disposition fields

    Pass when

    The signed review reconciles model counts and critical questions, separates visual from dimensional evidence, and records Complete, Complete with exceptions, or Blocked without an enclosure-ready claim from Resin alone.

    Stop if

    Do not mark Complete when counts do not reconcile, a critical question is undispositioned, external dimensions are missing, STEP status is inferred, or a render/fixture is presented as enclosure-fit certification.

Verification

Do not call the task complete until these checks pass.

  • Missing models listed
  • Top inspected
  • Bottom inspected
  • Connectors checked
  • Mounting checked
  • Mechanical follow-ups recorded

Evidence and exercise files

Download the evidence used by this guide.

Each repository-backed file is labeled with its contents, provenance, license or publication boundary, and current limitations.
Repository-backed file

3D compatibility and acceptance matrix

CSV / Resin evaluation record

Provenance: Repository-tracked matrix separating visible product states, model coverage, required independent checks, and acceptance boundaries.

Current limit: The matrix is not STEP output, enclosure-fit evidence, model provenance certification, or mechanical signoff.

Download file

Evidence boundary

Keep preparation separate from product proof.

The procedure defines what to run and retain; it does not claim that the task ran successfully on any project.
The 3D record can establish that one saved board opened, which references were visibly represented, and what orientation/interface observations were made from named presets. It cannot establish model provenance or dimensional accuracy, hidden geometry, enclosure fit, true mesh clearance, or mechanical signoff; the linked matrix and fixtures contain no successful STEP or enclosure validation for the reviewed board.

Failure recovery

Diagnose and recover without hiding the original state.

Preserve the symptom before changing anything, apply one bounded recovery, and repeat the affected assertion against the named project state.
DOC-3D-F01

3D View is blank, partially rendered, errored, or shows the wrong board identity.

Diagnosis: Record board revision, placed/object counts and landmark in PCB Editor, 3D View path, loading state, exact message, visible outline/body state, product/browser context, role, and timestamp.

Recovery: Return to PCB Editor, reconfirm the saved board and landmark, reopen 3D View once without changing board geometry or models, and retain the second result.

Stop or escalate: Escalate when the second open remains blank/partial, the outline/landmark is wrong, or recovery would require an unapproved board/model change.

Evidence: PCB and 3D captures, board/product/browser identities, exact message, attempt timestamps, placed counts, landmark comparison, and owner

Recheck: 3D View displays the recorded outline and landmark for the same saved board, or the review remains Blocked with no coverage/orientation conclusion.

DOC-3D-F02

A body is missing, generic, floating, intersecting, rotated, offset, or cannot be tied to one footprint reference.

Diagnosis: Record reference/package, footprint placement/rotation/side, model identity/source/status, visible transform, preset, neighboring geometry, pin-one/body seating, and source drawing.

Recovery: Classify the model Missing, Mismatched, or Provisional, preserve PCB placement, and send the model identity/transform question to the component-library owner; do not move the footprint to make the render look correct.

Stop or escalate: Block every affected clearance/orientation conclusion until model provenance, package, units, origin, rotation, and seating are verified.

Evidence: Coverage row, footprint Properties, source drawing, top/edge captures, model/transform values when exposed, issue ID, and owner decision

Recheck: The verified model aligns with the unchanged footprint in Top (F.Cu) and an exposing edge preset and matches package orientation/critical dimensions; otherwise it remains blocked.

DOC-3D-F03

The scene looks clear but required dimensions are unverified, or a STEP file is unavailable, fails, or differs from the view.

Diagnosis: List every claimed clearance with source/datum/tolerance/model status; for STEP record availability, settings, filename/checksum, units/origin, receiving tool/error, and each differing outline/hole/connector/height row.

Recovery: Retain Resin observations as visual context only, perform numeric checks in the approved external workflow, and keep STEP-dependent criteria Unavailable/Blocked until a valid independently opened artifact exists.

Stop or escalate: Stop signoff when any critical dimension lacks a source, a model is provisional, STEP cannot be independently opened, revisions are unpaired, or geometry differs without cause.

Evidence: Dimensional matrix, source revisions, external measurements, STEP status/artifact/checksum, receiving-tool record, object-level differences, and owner list

Recheck: Every critical dimension is externally verified or Blocked, and any STEP artifact opens with all critical geometry reconciled; no screenshot or fixture closes a dimensional row.

Task-specific troubleshooting

Resolve these states without changing the evidence boundary.

A component is absent

Check its footprint and model association; do not assume the physical part is absent from the design.

A component uses a generic body

Mark its envelope unverified and obtain the package-specific model or dimensional drawing before clearance sign-off.

Orientation looks wrong

Verify the footprint origin, model origin, rotation, board side, and pin-one reference against authoritative data.

The bottom view is confusing

Use a known asymmetric connector or reference designator to establish viewpoint and mirroring before recording orientation.

The view appears to fit the enclosure

Still validate exported geometry and numeric clearances in the receiving mechanical workflow.

STEP differs from the Resin view

Stop sign-off, record the source revision and export options, and compare missing models, transforms, and board geometry object by object.

Decision gate

Decide whether the board can enter BOM and mechanical handoff review

Are model coverage and orientation understood, every critical visual question dispositioned, and every dimensional or STEP-dependent claim independently verified or explicitly blocked?

Required evidence

Saved board and placed-reference count, reconciled model-coverage table, top/bottom/critical-preset evidence, interface and clearance matrices, approved source revisions, external measurements, STEP availability/result when required, issue owners, and signed coverage statement

Remain blocked when

Counts do not reconcile, a critical model is missing/mismatched/provisional without an owner, a required view is occluded, external dimensions or STEP checks are absent, or visual fit is used as mechanical proof.