Silicon Arc Furnace "Refines silicon from sand and graphite." Property Value General Health 575 Size 3x3 Build Time 2.73 seconds Build Cost 80 70 Power Power Use 360 power units/second Items Item Capacity 30 items Input/Output Input 1 • Graphite 1.2/sec 4 • Sand 4.8/sec Output 4 • Silicon 4.8/sec Production Time 0.83 seconds