How to make a collapsible punching trough
Happy Holidays! Who needs mulled wine and a pile of gifts when you’ve got a tub of PVA and a stack of binders board? This year, give yourself the gift of a collapsible punching trough. This post goes out to students from last week’s bookbinding course at Ink Spot Press. Look! I put instructions online, just as I promised! I learned to make these little gems from Ace Bookbinder Anna Embree when I was a grad student at The University of Alabama.
A punching trough is an invaluable tool which helps you to punch identical holes in multiple sections. I have a beautiful wooden one made for me by Bob Walp at Chester Creek Press,
but I also love my cheap collapsible troughs. They are easy to store and easy take to workshops that I teach. Best of all, they are easy to make.
Materials you will need:
Two long rectangles of binder’s board (for example: 4″ x 8″)
Four identical small rectangles of binders board (for example: 3.5″ x 4″)
Two strips of bookcloth the height of the long boards (8″) and 4″ wide
Tools you will need:
Glue and a glue brush
sharp blade (olfa or x-acto)
Draw a triangle in pencil on one of the four small rectangles. Start about a centimeter from the corner and have the point land somewhere over half-way to the other side. Like so:
Cut that triangle shape out.
Save the triangle so that one day you can make a tiny, triangular book.
set that cut-up rectangle on top of another of your four rectangles and trace the triangle onto it. Now what do you suppose we do?
You guessed it. Cut that triangle out, too.
Now for some glue! Adhere a triangled rectangle to an uncompromised rectangle.
set both of those pieces aside under a weight and lets move on to the big guns. Glue out about an inch and a half strip along the edge of one of the boards.
Adhere it to the the cloth like so:
Now flip it over so that the board is on top and the cloth is paper-side up. Draw a line on the book cloth two board thicknesses away from the board. I used the two spare triangles as a gauge:
Glue out the edge of your second board and set it down to the outside of that line on the cloth.
Glue out the second piece of book cloth and use your bone folder to adhere it to one of the boards.
work quickly to get the the book cloth into the groove between the boards and then adhere the cloth to the second board.
Now it is time to cut one-board-thickness-wide channels into both sides of the trough. The red arrows below indicate where these channels should go.
Score a line using your ruler and awl. This line should be parallel to the short side of your boards about 1cm from the edge. It should begin and end about an inch from either side.
Using a scrap piece of board (maybe one of those handy triangles again) score a line exactly one board thickness to the inside from your last scored line.
Now cut that channel out.
Kaboom. You are now finished. I know, right? That happened so fast.
Now go have some mulled wine and show it to your friends and family. Don’t worry, it will fit in your bag just fine.