rub brick

rub brick

A silicon carbide brick used to smooth and remove irregularities from hardened concrete surfaces.
References in periodicals archive ?
And always carry angle iron, rub brick, clear coat, wood, a pole jam, hacksaw, sledgehammer, crow bar, bolt cutters and Bondo at all times.
I just have a little bag with Bondo, a sign to mix the Bondo on, and a rub brick to smooth out ledges.