**4. Conclusions**

In this research, an UPMAF process using rotating magnetic field was utilized to the high-precision finishing of Ni-Ti stent wire material. Vegetable oil was used as the finishing oil and was compared with the industrial finishing oil that is commonly utilized in the conventional magnetic abrasive finishing process. The characteristics and finishing abilities of these techniques were compared, and the Ni-Ti stent wire workpiece was finished by the different rotational speeds of the magnetic field with vegetable oil as finishing oil, and the following results were shown:


**Author Contributions:** Design experiment, methodology and conceptualization J.S.K. and L.H.; investigation and editing, S.S.N., B.S.K. and S.D.M.; writing of paper, J.S.K. All authors have read and agreed to the published version of the manuscript.

**Funding:** This research was funded by NATIONAL RESEARCH FOUNDATION (NRF) of Korea in 2019, (Research Project No.2016R1D1A1B03932103, 2019R1F1A1061819).
