He could see the metal flowing in upon itself, forming strong melded joints that were flawless.

They connect to form the symphysis pubis on the anterior side, while the posterior side connects with the sacrum and coccyx to form sacroiliac joints.

The caudals were procoelous (concave anteriorly and convex posteriorly), forming ball-and-socket joints with neighbouring vertebrae.

Joints can also form via cooling of hot rock masses, particularly lava, forming cooling joints, most commonly expressed as vertical columnar jointing.

Similar red lead-based compounds were also widely used as a jointing compound in engineering, to form steam- or oil-tight flanged joints in pipework.

As the compression is lifted from the rocks, they are able to react to the tension on them by forming these breaks, or joints.

The neck vertebrae were distinctly opisthocoelous (convex at the front and hollow at the back), forming ball-and-socket joints with neighbouring vertebrae.

Metal welding: used to form strong joints between similar metals by melting the points of connection together.

Much of the island is composed of Jurassic dolerite intrusions (upwellings of magma) through other rock types, sometimes forming large columnar joints.