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This paper proposes a new method for correction of tool run-out on a machine tool using a laser. The shank part of the tool attached on the machine spindle is irradiated with the laser beam. The thermal stress caused by laser irradiation at the irradiated part can make a very small deformation. First, the deformation patterns based on the thermal stress are shown. Second, experiments are carried out in order to investigate the influences of laser irradiation conditions on the deformation. Finally, a few case studies are performed using a cutting tool and succeeded in reducing the tool run-out to sub-microns.