The Mechanical Duster is the third tier of four Dusters included in the Buildcraft Additions mod. This tier of duster is an upgrade from the Semi-Automatic Duster. This tier duster can process ores using Redstone Flux (RF). Though the ability to use hoppers to input and output items has been disabled.
To use the Mechanical Duster, right click on the block with an ore in your hand to place the ore on the duster. The Mechanical Duster needs 400 RF to process one ore. Two metal dust will fly out of the Mechanical Duster.
To unlock the Mechanical Duster, 40 ores must be processed in the Semi-Automatic Duster before the next tier will function.