1. BASIC DESIGN AND TECHNOLOGY

2. JUNIOR HIGH SCHOOL-ONE
TOPIC
CUTTING TOOLS UNDER WOODWORK
DURATIO N
70 MINUTES

3. OBJECTIVES 1.State three cutting tools under woodwork
2.Describe the uses of saws, chisels and planes
3.Sketch firmer and mortise chisels

4. THE CUTTING TOOLS UNDER WOOD-WORK
1.SAWS
2.PLANES
3.CHISELS

5. Sawing is the process of cutting along and across the grain of timber
SAWS
Sawing is the process of cutting along and across the grain of timber
TYPES OF SAWS
RIP SAW
It is used to cut along the grain of timber. It has a length of 700mm ,it has 4-6 teethper 25 mm
Handle
700MM
Teeth
Blade

6. CROSS-CUT SAW Handle 600MM Teeth Blade
It is used to cut across the grain of timber. It has a length of 600mm,it has 6-8 teeth per 25mm
600MM
Handle
Teeth
Blade

7. TENON SAW
It is used for cutting tenon.It has a length of 400mm,its teeth is 2-4mm per 25mm
Handle
Back
Blade
Teeth

8. PLANES
Planning is the process of removing unwanted portion from the surface of timber
TYPES
SCRUBBING OR ROUGHING PLANE
It is used to remove the dirt or rough surface of a timber
Adjustable screw
Lever cap
Handle
Front knob
Body

9. It is used after the roughing plane to even the surface of the wood.
JACK PLANE
It is used after the roughing plane to even the surface of the wood.
LEVER CAP
ADJUSTABLE SCREW
HANDLE
FRONT KNOB
BODY
BLADE

10. It is used to smooth the surface of the wood
SMOOTHING PLANE
It is used to smooth the surface of the wood
Blade

11. Chiseling is the process of removing waste from wood with a chisel
CHISELS
Chiseling is the process of removing waste from wood with a chisel
TYPES
FIRMER CHISEL
It is used for cutting shallow grooves in timber or wood.
Cutting edge
Handle
Ferrule
Tang

12. It is used for cutting deep grooves in a wood or timber
MORTISE CHISEL
It is used for cutting deep grooves in a wood or timber
MORTISE
Handle
Ferrule
Tang
Blade
Mortise groove
Cutting edge

13. 1.Differentiate between ripping and cross- cutting
EVALUATION
1.Differentiate between ripping and cross- cutting
2.Sketch and label the firmer chisel
3.Explain why the roughing plane is used before the jack plane

14. Abrantier theophilus:Klo-agogo L/A J.H.S
MEMBERS
Abrantier theophilus:Klo-agogo L/A J.H.S

15. THANK YOU