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Request Engineering ReviewA mold trial issue tracking sheet controls unresolved findings from T0, T1 and T2. Each issue should keep one traceable ID from the observed symptom and root-cause hypothesis through corrective action, ownership, verification and evidence-based closure. An issue is not closed simply because a tool or process adjustment has been completed.
Core rule: corrective action completion is not the same as issue closure. Closure requires a defined verification method and traceable evidence. For the broader release sequence, use the injection mold validation and issue-closure guide .
These three records may refer to the same mold trial, but they should not perform the same job. The issue tracker owns unresolved findings and their closure chain; the other records provide trial history or coordination context.
Records what was actually run: trial stage, machine and material conditions, process settings, samples, observations and results from that specific trial.
Carries each unresolved issue across trials with one issue ID, hypothesis, corrective action, owner, due date, verification method, evidence reference and closure status.
Capture discussion, decisions and follow-up communication, but should not replace the controlled issue record used to assign, verify and close technical actions.
Do not duplicate the full trial condition record inside the issue tracker. Reference the relevant trial record, then keep the tracker focused on the unresolved issue, responsible action, verification result and evidence-based closure.
A useful tracker should make every unresolved issue identifiable, assigned, verifiable and closable. Keep the field set compact enough for daily use, but complete enough that another engineer can understand the issue and verify its status without reconstructing the trial history from emails.
One unique identifier that remains unchanged until closure.
T0, T1, T2 or the later trial where the issue was observed.
Identify the affected cavity, part area or tool location.
Record the observable or measured condition without assuming cause.
State the current suspected cause separately from the symptom.
Define the specific action intended to address the issue.
Name the person or function responsible for the action.
Set the required completion or review date before the next gate.
Define how the corrective action will be checked at the next review.
Reference the measurement, photo, report or approved result used to close it.
Use a controlled state such as Open, In Progress, Hold or Closed.
The tracker should distinguish what was actually observed from what engineers currently suspect caused it. Keeping these fields separate prevents an unverified assumption from being treated as the confirmed reason for a tool or process change.
Record the visible or measured condition, affected cavity or feature, location and relevant magnitude. The wording should describe what can be seen or measured without assigning a cause.
Record the current engineering explanation as a hypothesis until testing or inspection supports it. The hypothesis may change as new trial evidence becomes available.
This issue tracker records the hypothesis; it does not replace the diagnostic method used to prove it. When the cause domain is still unclear, continue with the injection molding defects diagnosis guide rather than expanding the tracking sheet into a troubleshooting procedure.
Once the team has a working hypothesis, convert it into a specific, owned and time-bound action. The tracker should show what will be done, who is accountable, when it is due and what result should be checked at the next verification point.
State the exact task or controlled change, not a vague instruction such as “repair mold.”
Assign one accountable person or function for completing the action.
Set the completion target against the next trial, review or release gate.
Define what improvement should be observed or measured before verification.
“Repair mold before T2.”
“Inspect and rework the Cavity #3 left-slider shut-off; owner: Tooling Engineer; due before T2; expected result: eliminate the local 0.12 mm flash.”
Completed work does not automatically close the issue. Once the action is finished, keep the issue open or pending verification until the planned trial or inspection confirms the expected result.
When an issue remains unresolved, do not create a new record for every trial round. Keep the same Issue ID and append the action, retest and verification result so the full closure history stays traceable from first observation to final evidence.
Record the symptom, cavity or location, working hypothesis and Issue ID. Assign the first corrective action and owner.
Keep the same Issue ID. Record whether the action improved, failed or changed the condition, then revise the next action if needed.
Compare the result against the defined verification method and attach the evidence needed to support closure or further action.
The issue tracker follows the issue, not the entire trial. Machine settings, material conditions and full trial observations stay in the trial record; this sheet carries only the unresolved finding, corrective action, retest result and closure status across trial rounds.
Action complete does not mean issue closed. A tracker should move an item to Closed only after the defined verification method confirms the expected result and the supporting evidence can be traced to that Issue ID.
The repair, adjustment or other action has been completed, but the next trial or inspection has not yet demonstrated that the issue is resolved.
The verification result meets the defined acceptance basis and the tracker includes a traceable evidence reference supporting closure.
“Toolroom finished,” “looks better,” or “issue corrected” is not closure evidence. These statements describe work or opinion, not the verification result. Keep the item Open or Pending Verification until the agreed check has been completed and referenced.
The issue tracker controls the problem, action and verification history. An ECN is needed when the corrective action changes a released or controlled baseline that requires formal approval, revision control or customer notification.
Records the unresolved finding, corrective action, owner, due date, retest result and closure evidence. It remains the working history of the trial issue.
Controls the approved change to the released baseline, including the revised item, approval record, implementation scope and effective revision.
Do not replace the Issue ID when an ECN is opened. Keep the trial issue history intact and reference the approved change record from the tracker. For the formal change-release fields and approval record, use the injection molding ECN form .
Download the updated v2.0 engineering template for tracking unresolved mold-trial issues from first observation through corrective action, T0–T2 verification and evidence-based closure. The document follows the same issue-control logic used throughout this guide.
Open engineering reference. Adapt project-specific approval, acceptance and document-control fields to the applicable customer requirement.
It is an engineering log for unresolved mold-trial findings. It keeps each Issue ID traceable through symptom, hypothesis, corrective action, ownership, verification and evidence-based closure.
A trial record documents what was run and what happened during a specific trial. The issue tracker follows unresolved findings across trials until the required corrective action and verification are complete.
Core fields should include Issue ID, trial stage, cavity or location, symptom, root-cause hypothesis, corrective action, owner, due date, verification method, closure evidence and status.
Only after the defined verification method confirms the expected result and the tracker includes traceable evidence such as measurements, photos, gauge or fixture results, sample checks or an approved acceptance record.
Escalate when the corrective action changes a released or controlled baseline that requires formal revision, approval or customer notification, such as a drawing, controlled tool configuration, material requirement or approved process condition.
If the issue requires actual mold correction, repeat trials, verification and export-tool release support, continue to the corresponding production service.
Send the current issue log, drawings and available trial evidence. We can review whether open items have clear ownership, verification requirements and closure evidence before the next mold trial or shipment decision.
