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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

5. Operation of scraping

The scraper is moved over the workpiece by the pushing or puling power of the hand. The chips are removed not by cutting but by squeezing, because the scraper is applied to the workpiece by an angle of inclination of approximately 45° which results in a cutting angle of more than 90°.

Figure 14 - Angles with push-scraping