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		Operations on Band and Circular Sawing Machines - Course: Mechanical woodworking techniques. Instruction examples for practical vocational training (Institut für Berufliche Entwicklung, 23 p.)
			(introduction...)
			Preliminary Remarks
			Instruction Example 1.1.: Frame Sections
			Instruction Example 1.2.: Frame Sections
			Instruction Example 1.3.: Frame Sections
			Instruction Example 1.4.: Curved Frame Sections
			Instruction Example 1.5.: Wall Shelf

Instruction Example 1.3.: Frame Sections

Executing angle cuts at an angle of 45° using the circular saw bench to cut off frame sections.

Material

Figure

Sawn timber taken from instruction examples 1 and 2

Length: 1050 mm
Width: 60 mm
Thickness: 45 mm

Machines and tools

Circular saw bench, circular saw blade with acute-angle tooth

Measuring and testing means

Folding rule, mitre angle 45° or 135°

Aids

Pencil

Necessary previous knowledge

Measuring and marking

Sequence of operations

Comments

1. Position material, set sliding table stop to a cutting angle of 45°.

2. Switch on the machine and undertake two test cuts. Check angle accuracy.

Fold up test piece. Both pieces must when put together form an angle of 90°.

3. Undertake the angle cuts of 45° on all workpiece adhering to the required linear measure.

Low feed rate yields a clean cutting edge and avoids fibre fraying.

4. Check for proper fitting and control dimensional accuracy.

Fit together the frame woods, visually check the mitre joints, dimensional inspection using folding rule.

Completion

Mill the folds, glue the mitre joints, finish and grind the frames and break the edges with abrasive paper for yielding complete, usable frames.

Frame Sections

Sequence of operations	Comments
1. Position material, set sliding table stop to a cutting angle of 45°.
2. Switch on the machine and undertake two test cuts. Check angle accuracy.	Fold up test piece. Both pieces must when put together form an angle of 90°.
3. Undertake the angle cuts of 45° on all workpiece adhering to the required linear measure.	Low feed rate yields a clean cutting edge and avoids fibre fraying.
4. Check for proper fitting and control dimensional accuracy.	Fit together the frame woods, visually check the mitre joints, dimensional inspection using folding rule.