How to Use the Impact Drill

(1) Before drilling, mark the position of the hole on the wall with a pencil or chalk, and shock the center of the hole with a center punch. Then select the straight, sharp, non-destructive, impact drill with the same aperture.

(2) Open the card head, insert the drill bit to the end, with the card head key to tighten the card head.

(3) Select the appropriate drill speed. When the aperture is large, it uses low speed and the aperture is used for high speed in the hour. When drilling hard walls and stones, connect the impact attachment of the impact drill.

(4) Both hands to grasp the impact drill, the tip of the drill against the center of the punch impact pit, so that the drill bit and the wall into a 90-degree angle.

(5) Start the impact drill, force evenly toward the drilling direction, and keep the drill bit perpendicular to the wall. Remove the drill bit from time to time during drilling to remove the drill chips.

(6) When measuring the depth of the drilling, you can reach the bottom of the hole with a thin hard rod, make a mark on the rod, and then take out the hard rod to measure the depth of the hole.