The Technique of FURNITURE MAKING

OBLIQUE PROJECTION

The elevation of the object is drawn to scale and parallel to the observer, as in orthographic projection, but receding lines, i. e. the sides of the plinth not visible in 331:1, are drawn at a convenient angle 30°, 45°, or 60° according to the set-square available. Figure 331:1 shows the plinth side drawn at an angle of 45°. If the receding lines are short the angle should be fairly large; if they are long the angle should be acute, otherwise an exaggerated effect is produced. Figure 333:2 gives the effect achieved by drawing the side to half the scale of the front, which gives a more pleasing appearance, but a warning notice should be

331 Orthographic projection

side elev'

E

X

D

rebate

vm

full size details

Y

plan

F/S details

scale 1/8th + F/S

side E

third angle

included in the drawing if this method is adopted. Circles and parts of circles can be drawn with the compass in oblique projection, and the method is invaluable for showing details of constructional jointing, etc.

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The Technique of FURNITURE MAKING

ESTIMATING THE COST OF MAN-HOURS IN HANDWORK

Where no previous records are available the proprietor must assess his own capabilities and those of his employees. Common joinery items are usually in softwood of fairly large dimensions, with …

Costs of man-hours

The total cost of man-hours at the rates paid, plus overtime rates where applicable, plus health insurance, pensions, paid holidays, etc. have to be considered. Here again these may be …

Appendix: Costing and estimating

Costing is the pricing of completed work taking into account not only all the direct expenses— materials, wages and insurances, fuel and power, machining costs, workshop expenses, etc.—but also a …

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