Thanks, Hela-- nice to see you again. A shim is a thin wedge of material (wood or metal or stone) for driving into crevices with a hammer or mallet, or for temporarily supporting or tightening joints; it looks like the end of a chisel or slot-head screwdriver, but bigger and with no handle-- or like a graduated doorstop. [url= ]HERE[/url] is one in use.
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