"The tool creates a dimple at the precise intended center of the hole. ... "If you're installing standing seam sheet metal to 2½-inch square steel tubing, it might not be a big deal.

When dimple dies are used they are coining the sheetmetal, so the harder the applied pressure the more accurate the flare will be with less metal spring-back. Aluminum sheet is the easiest common ...

HVAC professionals working with sheet metal, ductwork, and tubing need tools proven to stand up to the test of time: tools that can gouge, drill, crimp, cut, seam, fasten — or maybe a combination ...