Question

post-test
which of the following is the best surface for applying body filler
to a repair area?
a. bare metal
b. self-etching primer
c. conversion coat
d. topcoat

Explanation:

To determine the best surface for applying body filler, we analyze each option:

• Option A: Bare metal is not ideal as body filler adheres better to a primed surface.
• Option B: Self - etching primer provides a suitable, etched surface that body filler can bond well with. It prepares the metal surface for the filler by creating a rough, adherent layer.
• Option C: Conversion coat is more for corrosion protection and not the primary surface for body filler application.
• Option D: Topcoat is the final layer of paint and is not a surface on which body filler is applied.

Answer:

B. Self - etching primer