☰ Contents · Technology

Kinds of wood and the carpenter’s bench

Lessons 26–29 · 4 lessons · Sh. Sharipov, N. Muslimov, O. Tolipov, Q. Abdullayeva, O. Qo‘ysinov, V. Sattorov, S. Ahmadaliyev, M. Mo‘minova. Mehnat ta’limi (Labour Education / Technology), Grade 5. Sharq Publishing, Tashkent, 2015
29

The carpenter’s workbench

Textbook: pp. 50–51
GoalKnow the structure of the carpenter’s bench and the rules of using it.
New words
carpenter’s workbench · duradgorlik dastgohivice (clamp) · iskanjawedge · ponabench top · ish taxtasi
Explanation

Although carpenter’s benches differ in structure, all have a wooden or metal base and a top with vices. The main parts of the table are the lengthwise and crosswise vices, the bench top with holes for wedges, and the tool trough. Tools (hand saw, plane, chisel, hammer) are laid with handles toward the worker. The vice has a screw mechanism: turning the screw moves the clamping board so the part is clamped or released. Bench height must suit the worker: stand beside it and put your palms on the bench; if you need not bend your back or arms, the height is right. Vices must not be over-tightened; wedges are set in their sockets only with a mallet; and the bench top must be protected from cutting and striking tools.

Worked examples
Saw and plane handles are laid toward the pupil and blades away.
Over-tightening bends the screw; once the part is held, do not turn more.
Class activity

Height check: in pairs check each other’s bench height: palms on top, elbows unbent. If it doesn’t fit, the teacher adjusts the footboard. Label the bench parts on a picture.

Practice
1
On a carpenter’s bench, which parts hold a piece so it cannot move?
2
How does the vice work?
3
What are wedges set into sockets with?
4
Why do we not over-tighten the vice?