A test grinds one inch of weld with the 3M 982C Cubitron 2 fiber disc versus a ceramic disc. The Cubitron 2 finishes in 12 seconds versus 31 seconds, leaves a finer surface that may skip sanding, and costs less overall.
Questions this video answers
12 seconds
31 seconds
One inch of weld
No; the narrator reports the noise level "praticamente não se alterou" (practically no change).
The ceramic disc produced a coarse finish requiring additional steps; the 3M 982C Cubitron 2 produced a much finer finish and can potentially eliminate later sanding steps.
