A hammer with a small head designed for pounding in small nails. Tack hammers are commonly used for cabinetwork, molding, trim, and upholstery. They have a wooden handle about 10 inches long and a head weighing 5 to 8 ounces. Some models have a slotted, magnetic face that holds nails for starting th... Found on http://www.daviddarling.info/encyclopedia/T/AE_tack_hammer.html