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2. Whipsaw - Wikipedia

   en.wikipedia.org/wiki/Whipsaw

   A whipsaw or pitsaw was originally a type of saw used in a saw pit, and consisted of a narrow blade held rigid by a frame and called a frame saw or sash saw (see illustrations). This evolved into a straight, stiff blade without a frame, up to 14 feet long and with a handle at each end.

3. Sandpaper - Wikipedia

   en.wikipedia.org/wiki/Sandpaper

   Sandpaper may be "stearated" where a dry lubricant is loaded to the abrasive. Stearated papers are useful in sanding coats of finish and paint as the stearate "soap" prevents clogging and increases the useful life of the sandpaper. The harder the grit material, the easier the sanding of harder surfaces like hardwoods such as hickory, pecan, or ...

4. Sin and Bones - Wikipedia

   en.wikipedia.org/wiki/Sin_and_Bones

   [3] [4] At the pre-show to the Metal Hammer Awards on June 11, Fozzy performed a new song set to be on the album called "Sandpaper". During an interview at the 2012 Download Festival , Jericho also stated that the band wanted to make Sin and Bones their "Black Album" in reference to Metallica 's critically acclaimed self-titled album that sent ...

5. Manhole cover - Wikipedia

   en.wikipedia.org/wiki/Manhole_cover

   A round manhole cover of a given diameter has a smaller surface area than a square cover of the same width, thus less material is needed to cast the manhole cover, meaning lower cost. The bearing surfaces of manhole frames and covers are machined to assure flatness and prevent them from becoming dislodged by traffic.

6. Sand casting - Wikipedia

   en.wikipedia.org/wiki/Sand_casting

   The sprue and risers must be arranged to allow a proper flow of metal and gasses within the mold in order to avoid an incomplete casting. Should a piece of core or mold become dislodged it may be embedded in the final casting, forming a sand pit, which may render the casting unusable. Gas pockets can cause internal voids.

7. Gravel pit - Wikipedia

   en.wikipedia.org/wiki/Gravel_pit

   Gravel pit in Tullingeåsen, which forms part of Uppsalaåsen.. A gravel pit is an open-pit mine for the extraction of gravel.. Gravel pits often lie in river valleys where the water table is high, so they may naturally fill with water to form ponds or lakes. [1]