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2. Pilot hole - Wikipedia

   en.wikipedia.org/wiki/Pilot_hole

   The pilot drill may be a standard twist drill, another type of drill bit appropriate for the material, or, when the primary purpose is precisely locating a hole, may be made with a short, stiff center drill. The pilot hole also reduces the power needed to turn a large drill bit, and reduces the large bit breakage risk.

3. Plug and feather - Wikipedia

   en.wikipedia.org/wiki/Plug_and_feather

   A number of holes are then cut or drilled into the stone face along the scored line approximately 10 to 20 centimetres (3.9 to 7.9 in) apart. Plug and feather sets are inserted in the holes, with the "ears" of the feathers facing the direction of the desired split. The plugs are then struck with a hammer in sequence.

4. Glossary of woodworking - Wikipedia

   en.wikipedia.org/wiki/Glossary_of_woodworking

   The tendency for wood that is being cut to direct the saw parallel to its grain. lath. Also called a slat. A thin, narrow strip of straight-grained wood, typically arranged side-by-side with others and used to support roof shingles or tiles, as a backing material for plaster or stucco in walls and ceilings, or in lattice and trellis frameworks ...

5. Hammer drill - Wikipedia

   en.wikipedia.org/wiki/Hammer_drill

   Holes in hard materials are needed for anchor bolts, concrete screws, and wall plugs. Hammer drills are not typically used for production construction drilling, but rather for occasional drilling of holes into concrete, masonry or stone. They are also used to drill holes in concrete footings to pin concrete wall forms and to drill holes in ...

6. Earth auger - Wikipedia

   en.wikipedia.org/wiki/Earth_Auger

   A post-hole auger. An earth auger, earth drill, or post-hole auger is a drilling tool used for making holes in the ground. [1] It typically consists of a rotating vertical metal rod or pipe with one or more blades attached at the lower end, that cut or scrape the soil.

7. Wall plug - Wikipedia

   en.wikipedia.org/wiki/Wall_plug

   The pad is wetted and wrapped around the wall plug, and the two are inserted into the hole; after a short time it hardens and a strong bond is achieved and the wall fitting can be applied. It is used in combination with wall plugs in masonry, ceramic, wood and plasterboard walls. Modern resin mixtures are based on polyester resins.