Celtic Knot is an infinity space node i found at internet.
Many variations are able.
In the illustration you can imagine the second level for a round glas shelf.
Measures for rotatet presentation: x = 576 mm; y = 356 mm; z = 494 mm.
Measures for table: x = 572 mm; y = 494 mm; z = 312 mm
Weight: 9 kg.