These connectors are for standard 1/2" PVC Schedule 40 Pipe (.625 OD). The motivation for me was to have a "greenhouse" structure. So I designed them to distribute water.
To make a dome, you'll need 26 connectors (20 hexagons and 6 pentagons) and 65 struts (35 of length A and 30 of length B). To determine your strut lengths, use a calculator: http://www.desertdomes.com/dome2calc.html
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