The Rolling Ball Structure for Jordan's first interactive Children's Museum in Amman
(to be opend in 2007) More

The following pages illustrate the progress of work by Sinnwerkstatt . Web design and © by Fa. Sinnwerkstatt, Blumenweg 14, CH-8712 Stäfa, Switzerland, contact
Clients of the Rolling Ball Structure are
Beck Interiors and Haleysharpe.


Now available! The video about the mounting
of the Rolling Ball Sculpture in Amman/Jordan

Order your DVD

  • Run Time: 36 min
  • 8 chapters (see picture to the right)
  • Menu Language: English
  • Price 13 EUR plus mailing expenses
  • Shipping after prepayment


Hi Speed Video (43 Mb)

September 1, 2006

Workers watching during lunch break

Builder's dust makes it possible: the balls stay still!


July 14, 2006




March 5, 2006
A further test for the RBS: After the heavy snowfalls in Switzerland (half a meter in one night) I took these stunning pictures!
Left and top:
The attachments for the ball lift are snow covered and frosted

Behind the freed motor plinth the snow piles up

February 25 and March 3, 2006

High noon on Saturday! First big test with 25 balls simultaneously running

Bird's eye view on the lift

First test with a kindergarten from nearby

Stefan Grünenfelder adjusting the round belts The 3 plinths for the interactive devices The engine block for the lift system The hand wheel for the Archimedes lift
February 22, 2006
7 cardan joints, 3 pairs of bevel gears, 40 bearings and 12 pulleys assembled. The pictures show the drives for the screw conveyor and the big wheel and one of the 3 interactive blocks.
February 19, 2006
All tracks, connections and switches are finished. The pictures show a part of the lift drive mechanism. The red pulleys are made by
Stefan Grünenfelder.
January 19, 2006
Snow on the tracks: winter ambience for Jordan
January 14, 2006
The Stairway (concept by Mark Bischof / realisation by Hanns-Martin Wagner) is the last missing link between the Big Wheel and the rest of the track system.
A bottom-up picture of the spiral ball run
January 8, 2006
First children playing (still without any mechanical devices)
...illuminated by night
January 4, 2006
Mark Bischof's bending performance

Mark (in the background) welding...
...and Hanns-Martin Wagner playing ball


December 30, 2005
Mark Bischof and Hanns-Martin Wagner enjoy the sun! Lowest temperature - 9° Celsius; welding temperature + 9000° Celsius!


December 20, 2005
The conveyor wheel on top of the sculpture
Spiral ball run Archimedes lift

50 balls in a box...

December 10, 2005
Two of the modules got finished
November 22, 2005
Finally all eleven combs are mounted (almost 7 meter of height). Would be nice to have a factory floor with a ceiling height of 10 meters and some overhead trolley, wouldn't it? On the other hand the view over the Lake Zurich is just gorgeous!
November 18, 2005
Still growing...

November 17, 2005

November 16, 2005
The first three combs are mounted

Delivery of the screw for the Archimedes lift

October 22, 2005
22 frames for the comb structure welded together

October 18, 2005
Delivery of nearly 700 kg steel. The picture shows the 6 mm wire for the tracks

August 25, 2005
One of the first designs of the Rolling Ball Structure


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