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| This is used to test the bonding strength of "paint to wood"
and "paint to paint" (inter-coat adhesion) to determine whether
an existing film is sound or requires removal. |
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| Using a sharp utility knife, score 4
parallel lines 3/16" apart. Score 4 additional lines in the same
manner perpendicular to the first, creating a tic-tac-toe. Scoring should
go through all layers of the paint film and into the wood substrate. |
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| Using a piece
of clear cellophane tape, test the adhesion by removing the tape
quickly. If no pieces of paint are removed, the adhesion of the
existing paint film is sufficient to accept additional layers of
paint. If some or all of the paint is removed by the tape, the
adhesion of the existing paint film is in question and should be
removed entirely. |
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