Abstract
Solid magnetic abrasive has been ever used in the field of magnetic finishing.In this study, the compound (liquid abrasive) of diamond paste and iron powder was used for magnetic abrasive and using this liquid abrasive, was attempted a magnetic finishing of WC-Co alloy. WC-Co alloy can be finished comfortably in comparison with steel under a similar finishing condition and it's surface roughness is under Rmax 0.1 μm. Magnetic finishing may contribute to the finishing of die or punch which were made of hard metal.