I was actually going to look at some "Velcro" since I had been looking at the "thorns" on various plant leaves. Velcro was modeled after the naturally occurring hooks on the cocklebur seed. In the same drawer I had some 3M Dual Lock fasteners and decided to take a look at them. Talk about weird! The Dual Lock fasteners can be repeatedly fastened and unfastened and have some amazing holding power. In any case I decided it would be fun to see if I could get a good picture of one. The one close up shows the toadstool shape of the little appendages, and the second image is a stereo pair of the surface. Helicon focus was used in both cases to get a decent depth of field (each picture required 20+ stacked images).
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