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		Grinding of Simple Tools - Course: Technique for manual working of materials. Trainees' handbook of lessons (Institut für Berufliche Entwicklung, 19 p.)
			(introduction...)
			1. Purpose of grinding
			2. Machines for grinding
			3. Tools for grinding
			4. Operation of grinding
			5. Operation of whetting
			6. Examples for off-hand sharpening with straight wheels
			7. Hints for mounting and dressing of grinding wheels
			8. Labour safety recommendations

8. Labour safety recommendations

- Only one person is working at the grinding machine - safety. distance laterally and backwards 1 metre.
- When working at grinding machines which are not equipped with a protective device for the eyes, put on safety goggles.
- Distance of the grinding support (1-2 mm) and distance of the spark killer (5 mm) have to be checked constantly.
- Do never grind any tool without guiding it by the left hand.

Figure 23 - Distances of grinding support and spark killer according to the requirements of labour safety

- Use grinding wheel only frontally - not laterally.

- Do never grip any tool with a piece of cloth or when you are wearing gloves.