Review both ends of the tolerance envelopeThe longest residual stub and the smallest protected-layer clearance occur at different tolerance extremes. Negative margins stay visible in the calculator.Review both ends of the tolerance envelopeBounds are independent extremes in the worksheetRemoval depth rangeProtected depth rangeSmallest remaining barrelLargest residual stubMinimum stub = target minimum − removal maximumMaximum stub = target maximum − removal minimum³Ô¹Ïtv · Engineering illustration · Conceptual, not to scale