Back to Home Page of CD3WD Project or Back to list of CD3WD Publications

CLOSE THIS BOOKManual Sawing - Course: Technique for manual working of materials. Trainees' handbook of lessons (Institut für Berufliche Entwicklung, 14 p.)
VIEW THE DOCUMENT(introduction...)
VIEW THE DOCUMENT1. Purpose of sawing
VIEW THE DOCUMENT2. Sawing tools
VIEW THE DOCUMENT3. Auxiliary means for sawing
VIEW THE DOCUMENT4. Operation of sawing
VIEW THE DOCUMENT5. Standing position and guiding of the saw
VIEW THE DOCUMENT6. Handling of the saw
VIEW THE DOCUMENT7. Labour safety recommendations

6. Handling of the saw

The saw blade is to be clamped so that the teeth are showing into the pushing direction.


Figure 13 Correctly clamped saw blade

Before starting to saw it is useful to file a guiding groove beside the scribed line so that the saw will not slip off when starting.


Figure 14 Filing of the guiding groove

Flat workpieces are to be sawn on their wide face. This will achieve better guidance for the saw blade and a more accurate cut since many teeth are cutting at the same time.


Figure 15 Sawing of flat parts on their wide side

When sawing metal sheets the saw is to be positioned so that the cut in pushing direction will be slightly upwards so that many teeth are cutting at the same time.


Figure 16 Sawing of sheets in upward pushing direction

Tubes are not be sawn off in one pass because the teeth might hook at the inner tube wall and break away.

Therefore, proceed with sawing until the inner tube wall is reached and then constantly turn the tube in pushing direction while sawing until the tube is sawn off.


Figure 17 Sawing of tubes with multiple re-clamping

Angle sections are always to be sawn on the wide face which necessitates re-clamping after the first sawing cut.


Figure 18 Sawing of angle sections on their wide side

Deep cuts are to be sawn with laterally swivelled frame. Therefore, the saw blade is to be clamped at an angle of 90 degrees compared to the normal position.


Figure 19 Sawing of deep cuts with laterally swivelled frame

How is the saw to be handled when sawing thin metal sheets?

_______________________________________________________

How is the saw to be handled when sawing tubes and sections?

_______________________________________________________

TO PREVIOUS SECTION OF BOOK TO NEXT SECTION OF BOOK

CD3WD Project Donate