Dan, do you mean that the shelf would be say 6" wide, and the depth of your alclove, and the height of your alclove, so the 6" wide bit would be facing towards you, as you stand in front of the alclove, and then the sliding shelf would come out towards you?
Like the flip doors on an entertaiment center, but without the flip part?
How about them garbage can under the counter slider things??
These are top mount, and rated to 175 pounds, but at $89 a set........
How about some of the under the drawer slides....?
Says they are rated for 100 pounds...
This kind of thing, but maybe with a flat panel in the middle to hang stuff on, instead of shelves?
Something like that?
PS I deleted your double posted thread.
The pessimist complains about the wind; the optimist expects it to change; the realist adjusts the sails.
William Arthur Ward