Marble Machine No 1 Motorised
Assembly Instructions
13
If you have a Dremel type tool with a small diameter sanding drum use that but be careful not to remove too much material from a step so it cannot
reach above the next step up. Place the steps in the frame from time to time and check that they match up. When a lower step is in its top position
it should still be a bit taller than the next step up so the ball will roll from step to step. If you accidentally sand off too much then a piece of scrap
plywood can be glued to the bottom of the step and you can then proceed to sand the top until it aligns with the other steps.
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Steps Assembly 2
