I have seen some small models but this train set has to be the smallest I have ever seen.
About five times the width of a ballpoint pen tip this set comes complete with mountains, tunnel and trees. David Smith created this tiny train set completely from styrene as an N scale layout in Z scale. Checkout the video after the jump.
“After carefully inserting the train-shaped tubing into its oval slot, I bonded the layout to a styrene support block that was in turn bonded to a mounting plate attached to the motor. This was an iterative process that involved fitting and sanding and fitting and sanding until the support block was exactly the right height. The mounting plate was made relatively large to provide a convenient means of attaching the mechanism to the layout under the building.”
Via Hacked Gadgets