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		Manual Reaming - Course: Technique for manual working of materials. Trainees' handbook of lessons (Institut für Berufliche Entwicklung, 18 p.)
			(introduction...)
			1. Purpose of reaming
			2. Tools for reaming
			3. Construction of hand reamers
			4. Operation of reamers
			5. Technological process of reaming
			6. Checking of straight reamers
			7. Indication of fits on the straight reamer
			8. Special recommendations for making conical bore holes true to size

1. Purpose of reaming

Reaming is applied after drilling in order to

- make bore holes true to size, e.g. for plain pin connections (in ranges from hundredth to thousandth millimetres)
- fine-finish the inside surfaces of bore holes
- align offset bores with riveted joints
- make conical bore holes for machine taper or taper pin joints

Figure 1 - Reaming

Reaming always necessitates the existance of a bore hole.