Instruction Example 1.5.: Wall Shelf

Undertaking oblong, cross and curved cuts on the band sawing machine.

Material

Figure

Sawn timber with milled wide and narrow faces (1)

Length: 500 mm
Width: 150 mm
Thickness: 20 mm

Sawn timber - milled (2)

Length: 400 mm
Width: 130 mm
Thickness: 20 mm

Machines and tools

Band sawing machine, narrow band saw blade

Measuring and testing means

Folding rule, try square

Aids

Templet for the curve, pencil

Necessary previous knowledge

Measuring and marking

Sequence of operations	Comments
1. Complete templet.	Make templet manually of plywood or hard cardboard.
2. Check and set up band sawing machine.	Position narrow band saw blade.
3. Set workpiece width on stop rule.	Process parts (1) and (2).
4. Switch on the machine and cut workpiece to width.	Push slowly, otherwise saw blade can disappear.
5. Mark linear measure on the workpieces and cut from length using the angle guide.	Check adjustable angle guide for correct angle setting.
6. Mark curves on the parts (2) according to the templet.	The templet ensures that all curves are like-formed.
7. Cut out the curves freehand at the scribed line.	Ensure that the hands are not in the sawing area during operations.
8. Switch off machine.
9. Control cutting accuracy.	Visual check.

Completion

Connect parts (1) and (2) by means of burr-joints. Grind the wide and narrow faces, glue burr-joint, break edges.

Wall Shelf