It was common for Greeks to trace their ancestry back to a "patron" god. For example, physicians would ordinarily claim Asclepius, the god of healing, as their ultimate ancestor. Here, Socrates is drawing a connection between his father's profession as a stone-worker and the most famous of the Greek sculptors, Daedalus. Daedalus, though not a god, was supposedly descended from Hephaestus, and, through him, descended from Zeus. Daedalus is credited with revolutionizing the art form of sculpture by "freeing" the arms and legs from the sides of his statues. This added an element of reality and, as is referenced here, undoubtedly contributed to the notion that they were alive and moving. Although Euthyphro will accuse Socrates of creating arguments that "hop about", Socrates will have the last laugh. He will show that Euthyphro's arguments not only move around but come full circle, returning to the point from which they began!
Consider one final piece of information about Daedalus. As the story goes,
he and his son attempted to escape from the Labyrinth on Crete by fashioning
wings of wax, attaching them to their arms, and flying to
safety. Unfortunately, his son, Icarus, ignored his father's warnings
and flew too close to the sun. When the wax melted, he plunged to his death
in the sea around Samos which bears his name. It would seem that, long before
the Robert Reed sitcom, "Father Knows Best!"