Apr 27, rock crusher is a refinement building. it turns raw minerals and metal ores into sand and inefficiently produces refined metal. 1 mechanics 1.1 tile of interest 2 references 3 history the rock crusher consumes 240 w of power and requires duplicant operation. it refines materials 100 kg at a time. 50 kg of material gets turned into sand and 50 kg to the corresponding refined metal. one.Aug 03, rf. the rock crusher is a multiblock structure added by railcraft. this machine is used to process various items and blocks. this machine runs off of redstone flux (rf), using 16,000 rf/use, and takes up to 160 rf/t. at full power, an operation takes 5.005 seconds (as there is a 1 tick pause between each.