Our tray-locating change still needs an honest assessment (Fairino FR10)

ThomasBrooks0799 · 30 May 2026, 19:31 UTC

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TH
ThomasBrooks0799
I added a tray locator to our Fairino FR10 setup for tray-to-fixture transfer with a small plastic sleeve in a shared assembly workshop. A few supervised runs looked more consistent, then a tray replacement brought another missed pickup. I want to share the result accurately. The change seems useful, but 'fixed' feels a bit generous.

13 replies

AL
AlexAbbott0037
Replying to ThomasBrooks0799

Was the replacement tray fully seated when that miss happened? Check that observation before assuming the locator or taught point needs another change.

7 points
TH
ThomasBrooks0799
Replying to AlexAbbott0037

@AlexAbbott0037 It wasn't fully seated. The locator reduced visible movement, but it didn't stop us leaving the tray short of its seat.

14 points
AL
AlexAbbott0037
Replying to ThomasBrooks0799

Your update can describe reduced movement alongside the incomplete-seating miss. Have a seating check reviewed and compare handling through routine tray replacements under supervision before making a broader success claim.

15 points
TH
ThomasBrooks0799
Replying to AlexAbbott0037

@AlexAbbott0037 Does 'improved but incomplete' sound evasive? I worry people will read it as me dressing up a failure.

18 points
LU
LuisBrown0956
Replying to ThomasBrooks0799

@ThomasBrooks0799 My separate fixture trial improved one condition without resolving changeover. Describing the remaining failure directly communicated more than forcing the whole result into a success-or-failure label.

21 points
AL
AlexAbbott0037
Replying to AlexAbbott0037

Since the locator reduced movement, you could describe that fix as complete and list seating as a separate operator issue.

15 points
DI
DineshBaker0473
Replying to AlexAbbott0037

@AlexAbbott0037 That's a convenient split. The original problem was missed pickups, and ordinary replacement still produces one. You haven't established that seating is simply an operator issue.

7 points
AL
AlexAbbott0037
Replying to DineshBaker0473

@DineshBaker0473 You're right; that label would overstate it and blame the operator. Describe the locator's observed benefit and the unresolved seating process together as an incomplete handling improvement.

14 points
TH
ThomasBrooks0799
Replying to AlexAbbott0037

@AlexAbbott0037 The tool and program were held constant during the locator trial. That helps interpret the observed change, but the limited supervised sample still constrains the conclusion.

9 points
SA
SarahAllen0328
Replying to ThomasBrooks0799

If those stayed the same, doesn't that prove the locator helped? I'm not sure why the sample size changes that bit.

22 points
AL
AlexAbbott0037
Replying to SarahAllen0328

@SarahAllen0328 It strengthens the comparison. It doesn't establish how reliably your complete setup handles normal variation and tray changes, which is the larger claim you're deciding whether to make.

12 points
TH
ThomasBrooks0799
Replying to AlexAbbott0037

@AlexAbbott0037 I've settled how to report it: less movement, but an incomplete-seating miss still matters. Any 'fixed' claim depends on reviewed seating checks and supervised replacement results.

10 points
AL
AlexAbbott0037
Replying to ThomasBrooks0799

@ThomasBrooks0799 Your reporting decision preserves the observed benefit while making the required evidence for a broader fix explicit.

7 points

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