Fritz Otto Working On A Binding

Decided to pull out the old, analog Pentax again to put Fritz Otto in front of the lens ... Can you guess what kind of binding he's working on?

Folding the endpapers.

Rough-cutting the endpapers to size.
His cutting mat has back stop to use with a triangle or "L" square
to ensure cuts are square. The one I use in real life can be seen here.

Tipping the endpapers on to some old text blocks that were in the studio.

Trimming the endpapers flush with the text block

Sewing the endpapers onto the tapes that were there.

Lining the spine.

Gluing on the endbands. These are traditionally glued on ...

Ready to start on the distinguishing features of this binding technique.

You can see more images of Fritz Otto at work on these bindings on his Insta, @FritzOttoBuchbinder. There are four posts in this series so far ...

So, anyone want to guess the technique? Add in the comments.