Impossible 3D Craft Art Trick Museum Series

"不可能立体工作アートトリックミュージアム"

These are a series of optical illusion papercraft kit which I found in Japan. There's a total of 6 kits in this series (with rough translations) :

I - 左が左右、右が上下の壁 (Left is left and right, right is up and down)

II - 重力を無視する屋根 (Gravity defying Roof)

III - 重力を無視する坂1 (Gravity defying slopes 1)

IV - 上が一直線の4本柱 (Four columns in a straight line above.)

V - 4面通り抜け窓 (Four-pane windows)

VI - 重力を無視する坂2 (Gravity defying slopes 2) a.k.a magnet like slopes

As shown above I own series I, IV and V. However I only did a full video of the first 2 (you can see how illusion V works at the start of IV)

Illusion I

Illusion IV

Most of the footage I got are in the videos as I did not take pictures of the contents whilst recording.

These impossible objects papercraft were created by Kokichi Sugihara, which some of these objects can be printed from his official website.