In this section, you can find flat drill bits for tile. These drills are made for drilling in unshocked mode with a drill. Flat drill bits are not used for drilling superhard materials such as porcelain tiles or tempered glass. They are designed for work with glass, porcelain and ceramics.

GRAFF Standard drill bit 5×65 is ideal for drilling bores in hard but brittle materials such as unhardened glass, porcelain […]

Feed Rate = Spindle Speed (RPM) * Number of Flutes * Chip Load (inches) = Spindle Speed * Number of flutes * Chip Load = Answer inches/min

GRAFF Standard drill bit 6×70 is ideal for drilling bores in hard but brittle materials such as unhardened glass, porcelain […]

GRAFF Standard drill bit 10×90 is ideal for drilling bores in hard but brittle materials such as unhardened glass, porcelain […]

GRAFF Standard drill bit 12×90 is ideal for drilling bores in hard but brittle materials such as unhardened glass, porcelain […]

Use a plunge rate of 50% or less of the feed rate. So for a feed rate of ... ft/min, use a plunge rate of ... ft/min or less.

Chip loads are provided as ranges. In order to extend the life of your tool, use the lower value in the range. If need to get your job done quickly then you can a higher chipload within the specified range.

GRAFF Standard drill bit 4×60 is ideal for drilling bores in hard but brittle materials such as unhardened glass, porcelain […]

GRAFF Standard drill bit 8×80 is ideal for drilling bores in hard but brittle materials such as unhardened glass, porcelain […]