Seacoast Stewardship Tool Library: Double Jack Hammer

Hand-drilling hammers are used to crush and break rock, drill steel into rock or to drive wedge and feathers into cracks or drilled holes. There are two types of hand-drilling hammers—single jacks and double jacks. Both have two rounded striking faces with beveled edges to minimize chipping. This large driving sledge has a 36-inch handle and 8-pound head. Because their use requires considerable expertise from both the driller and holder, we recommend that you use single jacking or modified doubl

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Seacoast Stewardship Tool Library: Single Jack Hammer

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