3 The Rubik's cube parts are taken to an assembly line. In this phase of production, the individual cube pieces are put together. Starting with the nylon core, each ABS center cube is riveted to the core with a spring spacer. The rivet is carefully controlled with a depth stop to ensure the spring is compressed just the right amount. Each center cube has a plastic cover that is glued on to hide the rivet. One of the six center cubes is left until the last part of the assembly. The ABS edges and corner pieces are individually stacked around the core. The cube is built from the bottom up and the last piece to be assembled is the final center cube which is again riveted into the core with a spring spacer and the final cap is glued on.
Repeat the process. Turn back to your blue side and repeat the turns on opposite sides. Then, return once more to the red side and turn the opposite sides in opposite directions. And last, return once more to the blue side and turn the opposite sides in opposite directions. When you finish, you should have a staircase-like zig-zag across four sides of your Rubik’s cube.[4]

This set comes with everything you need to build your Rubik's cube, so you can bake your cake and eat it too! With easy instructions, plastic cube pieces and tiles, center core pieces, metal screws, springs, and screwdriver, building the Rubik's cube will be a snap. For over 40 years, fans have been dying to know just how the Rubik's cube works. Now the secrets have been revealed! Allow the knowledge of the cube's inner workings to inform your strategy in solving the puzzle, along with motor skills and construction based learning. The only thing more impressive than solving a Rubik's cube is solving the one you built yourself!

If there are no more edges left on the top layer, then they are probably either inserted in the right place but flipped, or inserted in the wrong place. To get an edge out of somewhere it shouldn't be, just insert one of the yellow edges into that slot. This should get the edge out and on the top layer, ready for you to use the above instructions to insert correctly. Rubix Build