Working Conditions during Manual Sharpening of Cutting Tools and Ways for their Improvement.

The work of those who sharpen cutting tools manually on abrasive disks is classified as light and involving slight tension. From a hygienic viewpoint, the most important factors are noise and vibration whose levels are somewhat higher than the maximum permissible values. Long-term exposure to vibration results in substantial functional disturbances in workers. At present, the best ways to prevent vibration sickness seem to be the use of vibration-proof cutter-holders and the introduction of a work-and-rest regimen free from excessive vibration.