If you're making a case then in the morning you'll wake up to this.
PUTTING IT TOGETHER
Now mark the book for top and bottom and front and back. Then go have lunch so everything can dry.
The groove on the edge and the spine are formed while the cover is still damp. Put bricks on the book taking care to place them only on the book board. Don't crush the spine by covering the entire case with the bricks. Now the cover can be trimmed back to fit the pages.
ALMOST THE FUN PART
Your cover should be bone dry. Remember when I said to not glue to the edges? That's because that loose strip is going to be gently ripped off. Don't cut it. You have to rip it. It should look really ratty with rough edges and pieces sticking up. Take your bone folder and rub those nasty pieces down until the cover is smooth.
You can get a remarkably smooth finish by by rubbing the rough edges with the bone folder.
THE FUN PART - COVERING THE SPINE
Cut the cloth about 3" and put on the spine. Rub it with your bone folder or just using your hands. On my leather book below I chose to use matching leather on the edges. That's because the paper I used is quite fragile. So I'm protecting the edges with the leather. You don't have to do the corners or spine in leather. Covering the entire cover in book cloth or paper is the easiest.
On this book I didn't pare the edges of the leather because I don't know how. The decorative paper is rather thin and I don't want a ridge where the paper and leather meet. So I'm adding a strip of plain paper to each of the white parts of the cover. This builds up that section of the cover to get rid of the height difference between the leather and the paper.
Next is to make a drop in groove in preparation for the paper. This is made by running a line along the spine piece. Put he line on the leather and close to the edge. Cloth is done in the same way.
The decorative paper does not butt up against the cloth and paper, but goes in the drop in groove. So when the book dries, the paper does not shrink away from the cloth or leather.
So pop in your already measured decorative paper and....you're not done.
Flip the book over and the edges (turn ins) will not all be the same size. You have to wait for the cover to dry for a bit. Go close the curtains, turn on the lights and make a cup of tea. After your tea use a ruler to even out those turn ins.
Next get a piece of white paper and trim it to fit inside the the white rectangle. Glue that in. To get a good fit I usually butt the paper against the top and run my finger nail around the inside edge.
At this point I wrap the text block in waxed paper and slide it into the cover. After the book is closed around the text block get a pair slender knitting needles and put in that groove. Remember the groove? Put under weights overnight.
The Guild of Book Workers USA
MILLIMETER BINDINGS henryhebert.net/2012/01/11/millimeter-and-rubow-bindings
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Portugal - leather tooling
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Bookbinding workshops in Scotland
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