This piece is crucial to the operation of the cube. This piece is glued to the 6 middle single coloured pieces and creates a movable hub for cube operation.



The center block is a 6 sided stick figure made from 2X2 cedar and metal angle brackets....



The center block is constructed from one 8 7/8 inch piece and 4 pieces 2 15/16 inches. These are glued and held together with metal angle brackets.



Find the center of each end of the pieces and drill a 1/4 inch hole about 2 inches deep. This can be done before or after the pieces are glued together. I found that a drill press gave the best and straightest results.



Roughly measure the center distance of to center caps place at the edge of a 27 inch square. Find the center measurement from inside flat to inside flat of the blocks then subtract 9 inches from that.



My construction needed an 18 inch center block to make the tops of the center caps to be 27 inches.



From this I cut 6 pieces of teh cedar at 4.5 inches each.



I used a drill press to drill a 1/4 inch hole all the way through. This was followed with a 3/8 hole then a 7/8 hole was drilled to be 3.5 inches deep.



I selected 6 5/16 inch 6 inch long lag bolts and 6 3 inch 5/6 diameter compression springs from a local big box store. I also needed 18 5/6 inch narrow washers.



These spring assemblies were assembled as shown then used to attach the short cedar pivot sections to the center block assembly



Place one end block on a smooth flat surface and position the center piece onto it, then cap it with another end block. It should be no more than 27 inches but ideally be 26.75 inches.



