Abstract
In this study, we investigated the effect of the motion direction of the abrasive particles on the polishing inner capillary walls by MCF (Magnetic Compound Fluid) flow. We used an experimental apparatus for polishing inner capillary wall by controlling the flow rate of MCF and the rotational number of magnetic field. We clarified that the relation between the traces left inner the capillary and the motion direction of the abrasive particles which influence the polishing.