ZIMSEC O Level · Wood Technology and Design · Form 3, Form 4
Machines
- Circular saw: ripping and cross-cutting.
- Band saw: curves and resawing.
- Planer-thicknesser: flattening and reducing to thickness.
- Pillar drill: accurate holes.
- Lathe: turning bowls, legs and handles.
- Portable power tools: jigsaw, router, electric drill, sander.
Machines save time and give accuracy but are dangerous: follow all safety rules.
Mass production aids
Jigs (guide tools) and templates make repeated parts accurately and quickly.
The design project
- Design brief and research.
- Specification (size, materials, cost, function, appearance).
- Ideas and development sketches.
- Working drawing and cutting list (with sizes and materials).
- Plan of making (sequence of operations, tools and time).
- Making the project.
- Testing and evaluation, with suggestions for improvement.
Cutting list
Lists each part, the number required, length × width × thickness and material. Add a little extra length for waste.
Exam tip: A clear plan of making with the correct order of operations earns high marks in coursework.
Check yourself
- Which machine is used to turn wood into round shapes?
- What is a jig?
- Name four items shown on a cutting list.
Show answers
- The wood lathe.
- A device that holds work and guides a tool so repeated parts are made accurately.
- Any four: part name, number, length, width, thickness, material.
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