Avoiding clamp jaw damage
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clamps (especially "high mileage", metal-jawed models)
can mar workpieces when you apply the torque during glue-ups.
woodworkers know this and use wooden cauls (small pieces of
scrap wood) between the jaws of these clamps and their workpieces
during glue-ups to prevent this problem.
a few valuable tips along these lines.
a bunch of 2" x 2" wooden squares for use as cauls.
Hold them to your clamp jaws with double-stick carpet tape
- or with small, circular magnets glued into counterbored
holes in the cauls.
are some additional items that make great cauls:
lids from plastic jugs and bottles (that match the sizes
of your clamp jaws)
film can lids
x 2" squares of indoor/outdoor carpeting
board cork, glued to your clamp jaws