Last weekend, on the program the Woodwrights Shop, Roy Underhill featured instructions for making 3 different puzzles.  I watched it intently, thinking these would  provide a use for some of the scrap hardwood I have been saving.  But, I guess I should have taken notes, because I now can’t remember the dimensions for the one cube puzzle I am mainly interested in.

    This puzzle consists of 3 sections, each about 1″ thick and 3″ square; 2 of the sections have an opening cut thru the middle (like a squared-off letter “O”);  the 3rd section is the same, with a section of the perimeter cut away (like a squared-off letter “C”).   The “C” locks the “O s” together, making an interlocking cube which can be disassembled if the parts are manipulated in a certain way.

   I thought I would be able to locate the instructions on the Woodwrights Shop web site, but no luck, either there or a general Google search.      Can anyone help, with either the dimensions or info to a web site with the info?   I don’t need a complete puzzle book, just specs for that particular one.  I intend to make a batch of them for Christmas stocking stuffers.    Thanks for any help.

                               Gary