Time out with an old book
book (Thick enough to accommodate the clock mechanism)
mechanism (Source it from any craft shop)
mark the centre of the book. (I measured the empty space below the title).
hole on the front cover big enough to accommodate the clock hands' mounting.
Measure as you drill to ensure it is not too big.
centre on the first page of the book, through the hole on the front cover.
Trace around the mechanism.
should be only wide enough that the mechanism fits snugly.
is the hard part! Start cutting a few pages at a time. (Keep the first cut-out
for future measurements).
you turn the pages, keep the cut pages at a right angle to prevent pages
shifting, especially if it is a thick book.
with the cut-out to ensure the template is still the same size.
you find that the pages start crumbling or tear, replace the blade.
the mechanism to determine if the cavity is deep enough - there should be
enough room for the hands to clear the numbers.
Glue only some
sections of pages together.