Bookbinding Tools
Set up a punching cradle for repeatable sewing holes
A signature is a section of folded sheets. Support its fold while you pierce it, then repeat the same hole positions on the next section. The cradle supports the paper, the guide sets positions and the awl makes the holes.
Measure along the fold
Use the length of the actual fold, including the end margins your stitch pattern needs. A cradle's outer length can include stops and handles. When the listing gives only the outside dimensions, check the working space and access for the awl before buying.
Choose hole positions for the binding
Fixed holes help repeat a pattern the guide already supports. With a layout that uses different stations, use a guide with adjustable positions or make a paper template for that book. Test the whole pattern on a spare section before punching all the sheets.
Treat the cover as a separate operation
A tool intended for paper may be a poor fit for thick cover board. Compare the tool geometry and the material it is rated to pierce. Follow your binding instructions for positioning the cover holes, and support the board on an appropriate backing.