Only one complete plane in my hanger but...
Simple concept; screwed 18" lengths of 3/4" PVC pipe to the studs spaced 30" horizontal and 12" vertical then covered them with self adhesive foam pipe insulation.
The frame of the shelf is made the same way.
The bookshelf in the background was leftover from an old desk.
Total Cost: $6.00
I started the Spectra on the top shelf back in 1990... maybe I'll finish it someday....
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Links Fixed...