Please ensure safety when drilling with water drills. There is a shoulder rest on the back of the water drill, which should be firmly pressed against your shoulder. Your hands are only responsible for turning it on and off and holding it steady. The downward pressure should be applied by the shoulder. When drilling to a certain depth, pull out and insert the drill bit, which is a familiar back-and-forth motion. This is done to pull out the powder inside without increasing friction on the drill bit. If you feel the drilling speed is very slow, please pull out the drill bit to check for any broken bricks or wall plaster inside. As you near completion, be mindful to reduce the downward pressure to avoid bursting through or damaging the outer wall.

1: When performing drilling operations for内蒙古 water-jet drilling in Inner Mongolia, be cautious to avoid back-and-forth drilling, as rushing may cause dry powder to jam the drill bit.

The drill bit must be steady; do not sway left or right, as you sway, it's equivalent to increasing the friction of the drill bit.

Do not aim for a one-shot success. Pay attention to the force when pressing down. If it's difficult to drill or the drill is descending slowly, withdraw the drill bit and inspect if there's any brick core left inside.

4: Avoid drilling holes by adding water to the drill bit when there's no water pipe or water source. With only a small amount of water, it can stick the powder together, forming sludge. This increases the friction on the drill bit, making it more difficult than dry drilling or water drilling.