It is difficult to process the inclined hole of the workpiece such as the pump cover and the shaft body. The original line has been used for scribing and processing on the square box. However, because the holes are small and deep, the drilling offset is large, and some even drill out from the small end faces (Fig. 1). If the surface of the borehole entrance is not perpendicular to the bore axis, machining is more difficult. For this reason, we have designed a slant hole drill. Drill template (Fig. 2) φD (φ300H7) stop and large end face positioning, the key to the design of the drill template