Question 7
(a) List any four steps involved in planning a rough piece of timber to width
and thickness.
(b) Make a pictorial sketch of each of the following timber defects:
(i) dead knot;
(ii) bowing.
(c) Sketch each of the following:
(i) butt hinge;
(ii) round head wire nail.
Observation
Few candidates were able to:
- list four steps involved in planning a rough piece of timber to width and
thickness;
- make a pictorial sketch of dead knot;
- sketch butt hinge and round head wire nail.
However, most of them failed to:
- list four steps involved in planning a rough piece of timber to width and thickness.
- make a pictorial sketch of bowing.
The expected response to question 7 is as given below:
(a) Any four steps involved in planning a rough piece of timber to width and
thickness:
- select the face side;
- plane the face side;
- test for flatness;
- put the first side mark;
- select the f ace edge;
- plane the face edge;
- test for squareness with the face edge;
- put face edge mark;
- mark for thickness;
- plane to thickness;
- test for squareness and flatness.
(b) Pictorial sketch of each of the following timber defects