A tongue formed on the book-block (possibly with a manila card strengthener along it) is left with a tapering cut, and the board is made with three laminars, the centre one being cut away to create a slot the same shape as the tongue.

The board can be completely finished away from (for example) a large, heavy book-block, doublures or paste-downs already attached, and then slotted on to the spine piece. A tight or grooved attachment can be chosen.

For more details click here to view/download Philip's article 'The Binding of King Lear' (PDF - 248kb).

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King Lear
by William Shakespeare
Example of tongue-in-slot board attachment

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Tongue-in-slot diagram