Book edition in progress

I just tried out a new device for punching signatures for our edition of 100 copies of a book of poems. It consists of a pin-bar with a triangular profile that has a hinged top bar comes down on top of it. The pins are set into drilled-out holes in the lower bar. Holes are drilled in the top bar directly above the pins. A folded signature of the book is placed over the pin bar and the top bar is pressed down. We punched forty books in a few minutes with this and all were perfectly aligned. I caught a glimpse of a similar device in a bookbinding video on YouTube, but cannot remember where it was. If anyone knows of it, let me know.

book punch

book punch

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