In finishing, which tool is commonly used to remove marks left by grinding and start smoothing the surface?

• A. Chisel
• B. Hammer
• C. Screwdriver
• D. Flapper wheel

Answer: (D)

In finishing, you want a tool that can lightly remove the ridges left by grinding while gently blending the surface for a smoother look. A flapper wheel does exactly that. Its many flexible abrasive flaps conform to the contours of the work, providing controlled, even abrasion that erases grinding marks and starts to produce a uniform finish. It’s used with a grinder and can be chosen in grits appropriate for finishing or deburring, making it ideal for this step.

The other tools aren’t suited for this purpose: a chisel would gouge and leave deep cuts, a hammer would dent or deform the surface, and a screwdriver isn’t an abrasive finishing tool at all.