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Animal glue was the most common woodworking glue for thousands of years until the advent of synthetic glues, such as polyvinyl acetate (PVA) and other resin glues, in the 20th century. Today it is used primarily in specialty applications, such as lutherie , pipe organ building , piano repairs, and antique restoration.
The degree of polymerization of polyvinyl acetate is typically 100 to 5000, while its ester groups are sensitive to base hydrolysis and slowly convert PVAc into polyvinyl alcohol and acetic acid. The glass transition temperature of polyvinyl acetate is between 30 and 45 °C depending on the molecular weight.
Roman numerals: for example the word "six" in the clue might be used to indicate the letters VI; The name of a chemical element may be used to signify its symbol; e.g., W for tungsten; The days of the week; e.g., TH for Thursday; Country codes; e.g., "Switzerland" can indicate the letters CH; ICAO spelling alphabet: where Mike signifies M and ...
Cyanoacrylate glue has a low shearing strength, which has led to its use as a temporary adhesive in cases where the piece needs to be sheared off later. Common examples include mounting a workpiece to a sacrificial glue block on a lathe, and tightening pins and bolts. It is also used in conjunction with another slower, but more resilient ...
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Original Gorilla Glue works on wood, stone, foam, metal, ceramic, glass, and other materials. It expands slightly while drying, sometimes enough to cause squeeze-out, which foams up in the air. [5] Super is a fast-drying glue. Gel Super is a no-dripping variety. Gorilla Construction Adhesive is an adhesive used for construction purposes.
Elmer's Glue-All was introduced in 1947; packaging c. 1976. Elmer's School Glue was introduced in 1968; packaging c. 1976. Elmer's washable, no run, School Glue. Elmer's Products, Inc. or simply Elmer's, is an American-based company that has a
An American-style 15×15 crossword grid layout. A crossword (or crossword puzzle) is a word game consisting of a grid of black and white squares, into which solvers enter words or phrases ("entries") crossing each other horizontally ("across") and vertically ("down") according to a set of clues. Each white square is typically filled with one ...