gce 2021 intermediate level joinery 2
gce 2021 intermediate level joinery 2
SECTION A
- In order to ensure the resistance of joints in wood joinery work, assembling aids (nails and screws) are required.
- a) Differentiate between screws and nails. (3marks)
- b) Draw a butt hinge and name the following parts: Pin Knuckle, Leave, Screw and hole (5marks)
- c) Give two factors that influence the choice of each of the following ironmongery. (6marks)
- Screws
- Nails
- Hinges
- Locks
______________________________________________________________________________________________ 2. A commercial dimension of timber is an important factor that determines a conversion method of most logs.
- a) Outline four other factors that influence the choice of a conversion method of a log apart from commercial dimensions of timber. (4marks)
- b) Draw a converted piece of timber and label the three main axis of the growth. (4marks)
- c) Some defects in timber can be avoided during conversion.
- i) Name any three of the defects.
- ii) Explain how each of these defects can be avoided during conversion. (6marks)