How to Construct "Magnet-Like Slopes" 

1. The diagrams of unfolded surfaces do not include margins for
glueing.  Please add the margins before cutting the diagrams.

2. The thickness of the support plate is not important; any plate
can be used.

3. The central flat and the four slopes are drawn from the rear
side.  So, all the lines should be holded so that they form 
convex edges just as ridges of mountains.

4. The support columns (Parts 7,8,9,10,11) are drawn in such a
way that the upper part in the diagram will be the top in the 
three-dimensional solid.  The columns should be fixed to the
support plate so that the glued edges are hidden from the 
viewer.

5. When fixing the slopes to the columns, fix them along the
guice lines drawn in the rear side of the slopes.  In particular,
the columns will be partly outside of slopes 3 and 4, but do not
mind.  Those parts of the columns are not visible from the
viewer.

6. In the resulting solid, all the four slopes go down toward
the central flat, but the slopes are very gentle; they
are almost horizontal, and only a little lower at the center
than the other ends.

7. The correct view point at which the illusion takes place is
unique.  So look at the solid by only one eye, and try to find
the view point at which all the five columns look parallel. 
If you find the correct view point, the central flat will
become the highest.  Good luck!

Kokichi Sugihara