Material-specific work instructions· Drilling in concrete or reinforced concrete:Concrete is normally strengthened with the reinforcing steel. When drilling rebar, the drill bit should be raised every 10 to 20 seconds. This ensures that the drill bit is undamaged and, more importantly, the steel chi

Instructions for use: Rotary hammer drill bitsGeneral work instructionsRotary hammer drill bits are primarily used in concrete, masonry, natural stone, etc. They are not suitable for materials such as bitumen, plastic, glue, adhesives and metal. The rotary hammer drill must be guided in a straight l

How to Sharpen Masonry Drill Bits A lot of the holes I drill tend to be into brick, masonry, or concrete, and I find that I am constantly having to change drill bits as they become dull and lose their edge.For me this is a problem as masonry bits are not cheap so I looked at the best ways to re-shar