Portable hole?

I recall there was an instructable about making a portable hole, or optical cavity with lights in it. As far as I knew, it was used as a coffee table, but I can't find it now. Has it been removed?

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Goodhart10 years ago
This portable hole is the only one I remember seeing recently. But then I was just looking at their catalog a few minutes ago :-)
octochan (author)  Goodhart10 years ago
thanks, but I finally found the one I was looking for, and it wasn't even on here!

Portable Hole Table
Goodhart octochan10 years ago
Oh Cool !
Kiteman Goodhart10 years ago
I predict that an LED version will appear here eventually.
Was on my to-do list. With movable lights to make a nifty shape-changing tunnel illusion.
Kiteman Kiteman10 years ago
Actually, if you browse the site there's some pretty cool, Instructable-style stuff. Plenty of inspiration for the bored.