Strombolian - These eruptions are characterized by distinct blasts of basaltic to andesitic magma from the vent. 1  These blasts produce incandescent bombs that fall near the vent, eventually building a small cone of tephra (cinder cone). Sometimes lava flows erupt from vents low on the flanks of the small cones.
Use steel wool for a satin finish. The scratch pattern left by a gray abrasive pad on the top is more aggressive and uneven than that left by 0000 steel wool. you get a better surface by rubbing out the final coat with steel wool than with an abrasive pad.
If you use a pad of steel wool, unravel it and wrap it around the block. If you use a roll, cut off enough that can wrap the block several times. Use steel wool for a satin finish. The scratch pattern left by a gray abrasive pad on the top is more aggressive and uneven than that left by 0000 steel wool.