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How to Make an Apothecary Cabinet
Automated Indoor Greenhouse
Customized Metalware Drawers
In Step 2 there is a picture of how the strap is wrapped through the inside of the tube and attached with two screws on each end to the strut. When putting up a piece where no hub existed I attached it this way. When attaching a strut on an end that already had a hub I attached the strap on one end with the two screws, and then hooked the strap through the existing hub before securing it down with two more screws. As mentioned in the text, the screw needs to be angled away from the strut, but pulled outward as far as possible so that it tensions the strap as it goes in. The straps themselves are pre-bent to the size of the hubs, which themselves are cut 1/4" shorter than the ends of the struts so that the straps curve neatly around at less than a 90 degree angle.
Geodesic Cedar GreenhouseView Instructable »
Solar Mendocino Motor
Portable Laminar Flow Hood