Our collar trial produced faint arcs on the visible surface, but two people inspected them under different lighting and disagreed. The supplier proposes softer pads. What appearance check should quality define before we compare another contact material?
We can identify them, but there are no before images and no recorded incoming appearance check. I have asked quality for judged starting samples and a consistent viewing method.
And let the normal inspector try that viewing method. The supplier needs the same acceptance reference for both pad options, alongside reliable pickup and release. Otherwise a softer material may win only because someone looked at its samples more kindly.