Building Materials
Advantage of a clamp compared to a kiln for burning bricks is that

It gives more output of first class bricks
It is suitable when bricks are required in large numbers
It has less initial cost
It takes less time for burning

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Building Materials
Putty is

Softened by a solution of pearl ash and quick-lime soaked in water
All listed here
Made with finely powdered chalk and linseed oil
Used for fixing glass panes

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