Magnetic polishing technique has wide application potential due to the high adaptability of flexible tool to the workpiece surface. The relevant polishing tools were developed

and a test platform was established in the paper. The workpiece finish had been greatly improved after spot polishing on stainless steel flat parts

and the average removal efficiency was 0.231μm /10 min

which verified the feasibility of the magnetic polishing method. Then two kinds of free-form surface structures were polished by magnetic polishing method. First

stainless steel parts with different curvatures were polished by two different polishing feed movement ways. Experimental results showed that two polishing methods had the ability to remove the contours of each curvature

and the removal amount falls between 0.14-1.33μm. Secondly

the removal efficiency was between 8.957-12.587μm /10min after spot polishing the microstructured free-form surface

and the smoothness of the contour is improved. Preliminary experiments showed that the magnetic polishing method had the ability to remove both free-form surface structures

so it can explore further magnetic polishing technology used in deterministic polishing of free-form surface structure.