Better not to do that! Because the T-shaped cutter does not have a spiral chip flute, the chips cannot be discharged smoothly when grooving, and the cutter can easily break! Besides, the cutting performance of forming tools is not as good as that of end mills, they are just relatively convenient! It is recommended to use an end mill to roughen it first! Then use a T-slot milling cutters to make the groove! Pay attention to sufficient cutting fluid and high pressure!