Fold the hinge over and run your router along the straight edge (full size)
in Centering Router Dado Jig
This photo was taken 6 years ago in Des Moines, Iowa with a Google Pixel 3.
It's also on Flickr.
Pat Meeuwissen posted 3 years ago
Derek posted 3 years ago
comments
How do you determine the size of the small folding piece?
Pat Meeuwissen posted
Found it didn't realize this was only one of the pics in the build.
Pat Meeuwissen posted
it's the same width as the distance from the center of your router bit to the edge of its base.
Derek posted