· Fitting a 14 inch (356 mm) cutoff disc to a 9 inch (230 mm) angle grinder will increase the edge speed excessively to at least 120 m/s (430 kmph). Photograph 1 shows an angle grinder with the wrong size cutting disc fitted and the guard removed. Larger discs are not designed for the higher speed of smaller grinders and if used, risk the disc ...
![](/themes/3fr7/images/logo/logo.png)