Skip to content
Start a conversation
Operating model

Design of experiments

Which suspected factor actually changes scratches?

Eight-run cube. Response is scratches per 20 seats. clamp runs left to right, deburr before wash runs into the page, fresh coolant runs up. Low clamp averages 3 scratches. High clamp averages 9. 394821039clamp, low to highfresh coolantdeburr before wash

Each corner is scratches per 20 seats. Low clamp averages 3. High clamp averages 9.

Eight runs on this fictional cell. High clamp adds about six scratches per 20 seats. Coolant and deburr order do not.
How this sheet sits with the others

In these eight runs, high clamp adds about six scratches per 20 seats. Deburr before wash and fresh coolant do not change the count. The high clamp lines up with the vise-jaw scratches on the check sheet. The result is for this fictional cell only.

What it makes visible
Scratches per 20 seats under clamp, deburr before wash, and fresh coolant.
When it is useful
When a suspected factor needs a comparison, not another opinion.
Who uses it
Devon Cho’s cell 2, on the vise and the seat face.
What it takes
Eight runs of clamp, deburr before wash, and fresh coolant, with the scratch counts.
What it leaves
High clamp adds about six scratches. Coolant and deburr order do not. The high clamp ties to the vise-jaw marks on the check sheet.
The underlying record
Clamp, deburr before wash, and fresh coolant on scratches at Devon Cho's vise are the trial of the vise-jaw marks Priya Shah tallies and the failure mode the FMEA names.

Where these facts go next

What this sheet still leaves out

It makes no claim outside this fictional cell.