THREE essential safety precautions that must be taken when using an offhand grinding machine
(i) The grinding wheel must be tested for cracks before using it in order to avoid possible busting of the wheel during operation
(ii) The wheel must be rigidly held in the machine spindle
(iii) Correct surface speed must be applied: in order to enable the wheel to cut effectively.
(iv) The operator must wear face goggles while grinding.