
12 DIY BOOKBINDING
Glue the Spine
We now need to attach the
mull
(a strip of cloth) to the spine and tapes. Connecting cover
boards to the mull, rather than directly to the signatures themselves, allows for a strong
but flexible backbone (hint: this is the key to creating our lay-flat binding), reinforcing the
spine and giving you something to connect the front and back covers to. The best cloth to
use for mull is white linen fabric with a weave that’s loose enough to allow sufficient paste
penetration but tight enough to remain strong under pressure. Your knowledgeable craft
store clerk should direct you to the perfect cloth specific to this task.
Making sure to keep the work even on all sides and the spine straight, tighten your work in a
press and tub
. If you don’t
have one of these lying around (and if this is your first bookbinding project, chances are, you don’t), no worries: a vise
should work just as well. Just make sure to protect the work from any harsh edges of the vise.