Make end papers and fly-leaves of 60-pound kraft paper or 80-pound manila, guarded with jaconet on one side of the sheet.
Its place is taken in good binding by fine muslin or jaconet.
A better material than muslin for this purpose is jaconet, being light in weight and starched a little.
jaconet is the best and may be obtained from a few library binders.
The jaconet and paper attached must be put into warm water until the split paper floats off.
Guarding with jaconet prevents the threads which lie in the middle of the signatures from pulling through the paper.
When small folded maps are badly torn line them throughout with Japanese tissue, jaconet or nainsook.
Guard the outer and inner leaves of all signatures that are broken or weak with paper or jaconet.
jaconet, jak′o-net, n. a cotton fabric, rather stouter than muslin.
Music should be sewed regularly or all along and the inside and outside sheets of all signatures should be guarded with jaconet.