In brief

Define what makes the bead unacceptable before specifying inspection. Separate continuity, visible width, path position and excess material, and relate each required decision to the part drawing and agreed examples.

A continuous bead can still be offset, and an acceptable visible width does not establish every bead or bond property. A 2D image of bead width does not by itself establish height or deposited volume. Visual inspection does not establish bond strength, cure state or adhesion; keep the separate checks your product requires.

On the production floor

Turn a quality judgement into a visible inspection question

Mark the required path and relevant limits on the current part drawing. For each decision, show good, clearly bad and marginal examples and identify anything that cannot be established from the proposed view.

Discuss your application
What to record

Record the criteria, conditions and evidence

Continuity

Define the required start, end, corners and joins of the path. Show which breaks matter, how they are judged and where the bead is visible.

Width and position

Define where visible width is checked and the permitted path relative to the part. Treat these as separate decisions with their own examples and limits.

Excess and hidden properties

Identify unwanted tails or extra material where visible. Keep separate product tests for properties the image cannot establish.

Before you contact us

Five questions before an inspection trial

  1. Which part revision applies?Use the current drawing, bead path and part reference for each variant.
  2. What counts as a failure?Define continuity, width, position and excess material separately with agreed examples.
  3. Where is the bead visible?Identify the proposed viewing point before assembly hides the relevant feature.
  4. What is marginal?Provide borderline examples and identify who approves the expected decision.
  5. What requires a separate test?Record bond, cure, hidden or dimensional properties that the selected image cannot establish.
Connected details

Six details to include in your brief

Question 1

Required path

Supply the current drawing and mark the bead path, endpoints and joins. Explain any intentionally unfilled sections.

Question 2

Gap examples

Show relevant clear failures and marginal gaps, with the agreed expected judgement for each.

Question 3

Width boundaries

State where width matters and provide examples around its agreed limits. Do not substitute a nominal value for the actual decision boundary.

Question 4

Position relative to the part

Identify the features that locate the part and the permitted bead path. Include an offset example distinct from a width failure.

Question 5

Unwanted adhesive

Identify the tails, excess material or double dispensing that matter to the product. State the visible area to be assessed.

Question 6

Limits of the image

Record hidden or otherwise unobservable properties and the separate checks required by the product. Resolve visibility with an optical trial rather than assume it.