The tip geometry of tungsten needles can have a significant effect on their performance. Different tip shapes can be used to achieve different outcomes in specific applications. For example, a conical tip shape can be used for precision cutting and drilling, while a chisel tip shape can be used for scraping and spreading materials. The sharpness and angle of the tip can also affect the penetration force and the precision of the needle. In microneedling applications, a needle with a sharp, tapered tip is typically preferred to minimize skin damage and pain during the procedure.
