Abstract: A dimpler apparatus for recessing nail heads in drywall panels and simultaneously dimpling the panels in the area of the recessed nail heads to expedite finishing of the panels, which includes a housing, a dimpler guide mounted on one end of the housing, a stationary stop in association with the dimpler guide, a dimpler slidably carried by the dimpler guide and the housing, a traveling stop attached to one end of the dimpler for periodically contacting the stationary stop and limiting downward travel of the dimpler, a return spring in the housing for returning the dimpler into recessed position after the dimpling operation and a driver adapted for reciprocation in the dimpler during a first increment of travel to drive nails inserted into the dimpler and slidable movement in concert with the dimpler during a second increment of travel to recess the nail heads and dimple the panels.