Carpenter's sheet for smoothing (9)

I believe the answer is:

sandpaper

(Other definitions for sandpaper that I've seen before include "Abrasive substance" , "Means of smoothing wood" , "Abrasive smoother" , "Woodworker's abrasive" , "Spared pan for the stuff used to prepare surfaces" .)

I've seen this clue in the Newsday.

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