Oscillation is described as high speed vibration, often as rapid as 22,000 oscillations per minute. Blades vibrating at these speeds cut through and grind away grout. Cutting the grout allows the partial removal of materials for repair projects. A number of oscillating tools are specialised for this task.
Fein Dustless Grout Remover
Manufactured in Germany, the Fein Dustless Grout Remover utilises diamond-tipped blades to cut through grout. These blades make a fine cut through the grout rather than grinding away the grout, which reduces the amount of dust generated during the process. The Fein uses interchangeable blades that are mounted in a number of positions, allowing grout removal in hard-to-reach areas. The Fein tool handles easily in tight working conditions. Changing blades is accomplished quickly with no tools.
The Grout Grabber is an attachment used with a reciprocating saw. Rather than cutting through the grout, the Grout Grabber uses a carbide grit to grind out the grout, which creates more dust and general mess but accomplishes the task. Because the Grout Grabber uses a reciprocating saw as a power source, its cost is lower than other grout removal tools. The amount of power available and the speed the Grout Grabber operates at is dependent on the quality of the reciprocating saw.
The Dremel Multi-Max is an oscillating tool system which is used to remove grout, among other tasks. The basic kit includes a 1/8-inch grout removal blade to cut through grout. The Dremel tool operates at multiple speeds ranging from 10,000 to 21,000 oscillations per minute, using its own 1.5 amp motor for power. Other uses for the Multi-Max include cutting through wood trim and drywall materials in home finishing projects. Like the Fein tool, the Dremel offers ease of handling in tight working conditions. Changing blades requires no tools and is accomplished quickly.
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