Bindery Blog

Thoughts about the graphic arts industry and the world at large.

Learn How To Crimp a Plastic Spiral Book

A guide on how to crimp a plastic spiral book

Sri Pra Phai is my favorite Thai restaurant. It has two locations in New York and thankfully, one is near my office. It has a very extensive menu. It is, however, poorly bound. Plastic Coil Binding requires a good crimp so that the coil does not spin out of the book. I often spun coil out of the book at The Cheesecake Factory since their books have been traditionally poorly bound as well.

Here you see that the plastic coil is not cut or crimped at all, much less at a ninety degree angle as it should be and as shown in the composite above. A good cut and crimp is possible using crimping pliers but an automatic plastic spiral binder offers better cutting and crimping. You can also buy an automatic cutter/crimper if inserting the plastic coil manually.

What else is wrong with this picture? The holes are square—not round. Round or oval holes are the proper shape for Plastic Spiral Binding. Square holes are the proper shape when using a wire binding machine. The printer, or bindery probably does not own a round hole die or an oval hole die, so they used a wire-o die. Furthermore, a book of this thickness should be using a four to the inch pitch—not a three to the inch pitch. But again, the printer or bindery probably did not have a four to the inch die for their paper punching machine. Also, notice that the last hole on the right is empty, missing a loop of coil.

It is much harder to make delicious food than to bind a decent book. It’s a shame that such a good restaurant has such a poor menu.

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