Switching supplier is the most visible response to a quality problem. It is often the most expensive one, and it does not always fix the cause.
A recurring defect creates pressure to act, and changing supplier looks decisive. Sometimes it is the right answer — capability that does not exist cannot be coached into existence. Often the defect has a specific, findable cause that will simply follow the product to the next supplier.
A short, scoped quality project asks a different question: what exactly is failing, at what rate, at which step, and against which requirement? Answering that usually takes a couple of weeks on site with production data, not a quarter of negotiation. The output is a cause, a containment and a corrective action with a verification date.
The cases that respond best are the boring ones: an ambiguous drawing note, a test limit that never matched the application, a work instruction that skipped a step everyone assumed was obvious, a component approved on paper but not in the process.
And when the answer really is capability, the same project produces the evidence to say so with confidence — which makes the supplier change a decision rather than a reaction, and gives the next supplier a documented starting point instead of a rumour.
— GANI Lifecycle engineering team