Surprising 3D the printing sphere which is going for a drive on roller coaster
Eric Petterson from Enkepinga, Sweden, made inspiring installation from a gear wheel, made on it 3D the eMaker Huxley printer in 2011. Last year it worked over beautiful 3D printing kinetic sculptures. This year Eric Peterson had a new idea for 3D the printing art project: sculpture sphere.
It reminds me SpaceWarp, the popular line of the self-made spheres which are going for a drive on "roller coaster", it appeared in 1980, and the popular Japanese manufacturing company of toys of Bandai made it. Users without the aid of others can design their own "roller coaster" and choose the sizes and measurements which only will wish. Dense plastic tubules are cut on different length, whirlwinds are formed of them and route loops, and on a place they are kept by plastic cross ties. Steel balls which roll down on the route, come back back to hill top by means of the screw conveyor on batteries.
Inspired beautiful sculptures of rolling-down spheres of Mark Bishof, Petterson made own for the house and an office. The basic rule of sliding of sculptures with going for a drive spheres – to provide very slow speed of sliding of glass or steel balls on all way, from beginning to end a track.
This project means a lot of work. Petterson started to be engaged in design of a sculpture in August, 2012. On design creation by means of the Google SketchUp program cunningly more than 100 working hours. Process of construction began with "lift", the screw which pushes a ball up when liftovy the pump gets the idea. Instead of using glue and screws for fastening a rail or support, Petterson decided 3D to print support for a rail which would fasten everything together. Because support of different length that everything settled down in the thought order were necessary for it, there were 8 different support which it was necessary to design and print. Process photos 3D below are presented to the support press, close, and later the general design.
One big discrepancy – to bend cores everything manually and it needed about 5 months that all this to make, at all this it worked only in the evenings. In total it made 67 templates of the tracks, everyone consists their 2nd railway lines.
The base platform is constructed for support of bearing support, the lift, the holder of the liftovy counter and a drive, an outside is not visible any screws.
Ending step – to combine details together. Petterson began with the lowest level to set a corner. Later it needed to understand how to load and unload a sphere from the lift, it was one of the most difficult parts of the project.
«It appeared that alignment of levels of tracks was more difficult step of the project. Very printsipno, that balls had identical sizes and weight. It is very heavy to reduce also speed when the ball is dispersed. The quantity a loop which I used in design, certainly was very bolshushchy therefore I had to lower tracks that somehow them to connect. It also meant that I should reduce the lift. At present balls are rolled from beginning to end, but speed is a little rather big. Everything naturally works, but I imagined that they will roll down a little more slowly. Still some time I will try to make design level. But I am happy with result», – Petterson writes.
On a photo result of the done work:
More laboriously about this 3D to a printing ball sculpture:
• The general time of modeling in Google SketchUp: about 100 hours.
• General time of assembly: about 300 hours.
• General time of the press: about 50 hours.
• All printing details are executed on: 3D RepRapPro Huxley printer (Beta).
• In total sculpture consists of 6 16 millimetric glass balls.
• On a track only one sphere can stay.
• Motor rotation – 1 revolution per minute, later it a little reduces speed that for one turn to lift the lift upward, it takes about 5 minutes and 32 seconds.
• The ball is rolled from beginning to end for 1 mines and 30 seconds. It means that generally for occurs always nothing, not including that the lift копотливо lifts a ball upward. It also was the main moment in a sculpture.
All STL files for printing details can be found on Thingiverse.