A perfect door hinge.

This looks like the perfect hinge.

An example of a continuous hinge and assorted channels.

SIPs connection details, lots of them.

A micro-connection system is proposed in this page. It refers to 3M dual lock such as this pdf.

Spline method of connection

A construction detail for panel connection, drawing only.

Products Listing shows low-priced institutional furniture.

KSTA.DE, Kölner Stadt · Anzeiger in a review of „Ring des Nibelungen” in Bayreuth has a picture of curved panel.