³Ô¹Ïtv / SOLDERING ENGINEERINGFrom observation to a controlled next step01Define therequirement02Gather measurements03Review the limits04Agree the nextactionIf evidence is missing: retain the question and assign an owner.A calculation or completed checklist does not release the assembly.Task: PTH annulus volume and measured fillExplanatory schematic. Not to scale, a process recipe, acceptance limit or inspection evidence.