Double Jack Hammer - Seacoast Stewardship Tool Library
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.
Sledge Hammer/ Double Jack | Pacific Industrial Supply Co.
Sledge Hammer/ Double Jack Catalog (SKU) Number: HMR-S. Sledge hammers have heads that weigh from 8 to 20 pounds, which are forged from heat-treated high carbon steel. They usually have two rounded striking faces with beveled edges to minimize chipping. Thirty-six inch handles are common. Handles can be fiberglass or wood.
0523-2810-MTDC: Handtools for Trail Work - US Forest Service
Hand-drilling hammers are used to 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.
Sledge Hammers | The Hammer Source
Steel, Brass, Copper and Soft Face Sledge hammers available with Fiberglass or Wood handles in a wide range of sizes at The Hammer Source!
Trail Tools: Pounding and Hammering Tools - American Trails
A single-jack (3- to 4-pound head with short handle) hammer can be used with a star drill to punch holes in rock. The single-jack can also be used to drive bridge spikes and for other jobs that are too demanding for a regular claw-hammer, but do not require the heavy-duty blows of a sledge.
Hand Drilling and Breaking Rock for Wilderness Trail Maintenance
Jun 16, 2017 · The steel is manipulated with one hand while the other hand hammers (single jacking), or the steel is manipulated by two hands while another person hammers (double jacking). This manual describes correct techniques, discusses proper tool maintenance, and includes sources of tools and a bibliography.
8 lbs. Double Face Sledge Hammer - The Home Depot
8 lbs., 30 in. double face; Indestructible handle never needs replacement; Outlasts wood and fiberglass handle hammers by well over 30,000 over-strikes; Ergonomic rubber grip handle reinforced with steel bars resists breaking while absorbing impact and vibration; Drop forged head is induction-hardened for long life
Hand Drilling and Breaking Rock, 8423-2602-MTDC, Hand Drilling Hammers
Engineer's hammer: These are also called long handle single jacks. They come with a 14-inch handle attached to a 3- or 4-pound head, and work well for the drilling technique we call modified double jacking.
Warwood Tool 6 lb. Double-Faced Sledge Hammer - Tools for …
Double-Faced Carbon Steel Sledge Hammers . Our double face sledges feature round striking faces with a slight crown and chamfered edges for efficiency and durability. Available in 9 different weights, these tools have drop-forged carbon steel heads with …
Double Face Sledge Hammers - Wright Tool
- Nupla®'s Double Face Sledge Hammer made with industrial grade head - Ergo-Power® handle has protective covering injection molded over classic Nupla®glass handle - Comes with Nupla's circular stripe handle.