Lightweight, portable demolition hammer drills overcome the limitations of a jackhammer. Like the jackhammer, a demolition hammer drill repeatedly pounds tough surfaces with a chisel-like tip. However, the demolition hammer drill is lightweight making it easier to use on walls and ceilings. But the demolition hammer drill does more than demolition. It not only reciprocates its bit like a hammer, but also rotates the bit in a drilling motion. Using the tool's controls, you can set the demolition hammer drill to pound, rotate or hammer and drill at the same time.
- Skill level:
Things you need
- Chuck key
- Masonry drill bit
- Chisel tip
Loosen the demolition hammer drill's bit chuck with a chuck key. Insert the shank of a masonry drill bit into the open chuck. Use the chuck key to tighten the chuck and secure the drill bit into the drill. Locate the hammer/drill setting button on the side or rear of the tool. The setting control might be a button or switch.
Flip the drill's setting button or switch to the setting that causes the drill to hammer and drill. The name of this setting varies according to the tool's manufacturer. Some have labels simply showing a picture of a drill bit next to this setting.
Press the masonry bit's tip against a surface such as a concrete block wall. Pull the drill's trigger to activate the rotation and hammering of the drill bit. Continue to exert pressure as the drill bit bores through the surface. Let go of the drill's trigger when you reach the desired hole depth.
Using the Tool to Drill
Loosen the drill's chuck with a chuck key. Insert the shank of a chisel tip into the open chuck and use a chuck key to tighten the chuck and secure the chisel tip.
Flip the drill's setting to the "hammer only" setting. Although the label that represents this setting varies from tool to tool, it often is represented by a picture of a chisel.
Press the chisel tip against the work surface. Press the drill's trigger to activate reciprocation of the chisel tip. Maintain pressure as the chisel tip carves away at the surface. To chip away small pieces, hold the chisel tip at an angle.
Using the Tool to Chisel
Tips and warnings
- You can use a demolition hammer drill and chisel tip to loosen hard soil during excavation.
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