The 'sledgehammer' exclusively impacts the cubies forming a sort of 'Workbench' shape. Any other cubies remain unaffected, (regardless of how frequently the 'sledgehammer' is employed.
The cubies within the 'Workbench' shape define the sledgehammer's 'workbench'.
The cubies inside the workbench are affected by the 'sledgehammer' in different ways, perfectly suitable to solve the rubik's cube.
Look at the pages under the section 'Tutorial.Sledgehammer' for more details.
Running the above 'Sledgehammer' does not affect the cubies already sorted.
(Click the 'radio button' to revert the colors)