Question

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hammer-on dolly is a seldom used technique because:
a) it is not effective in repairing bodylines.
b) it is not effective in straightening panel edges.
c) aluminum does not have metal memory.
d) it can easily cause further panel damage.

Explanation:

The hammer-on-dolly technique involves striking a metal panel directly over a dolly. This method applies force in a way that can easily stretch or distort the panel beyond repair, leading to additional damage, which is why it is rarely used in auto body repair. The other options are incorrect: the technique can work for bodylines/edges, and aluminum does have a form of metal memory related to shaping.

Answer:

D) It can easily cause further panel damage.