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		Scraping of plane surfaces - Course: Technique for manual working of materials. Trainees' handbook of lessons (Institut für Berufliche Entwicklung, 14 p.)
			(introduction...)
			1. Purpose of scraping
			2. Tools for scraping
			3. Purpose of inking
			4. Testing and auxiliary equipment for inking
			5. Operation of scraping
			6. Technological process of planing a plane surface
			7. Additional recommendations

7. Additional recommendations

- Do only use properly whetted scrapers.
- Workpieces have to be clamped that way, that they do not distort under the clamping force.
- Spread the ink extremely thin and evenly.
- Protect the surfaces of roaster plates against damages, prevent them from rusting by oiling them after use.