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A third important part are the structures that attach the "middle-thread" (red) to the ceiling and the ground.<br> | A third important part are the structures that attach the "middle-thread" (red) to the ceiling and the ground.<br> | ||
They 1) hold the middle-thread in place, they 2) react to the operators movements by turning in the required direction (blue wheel) and they 3) provide a bracket for the spring.<br> | They 1) hold the middle-thread in place, they 2) react to the operators movements by turning in the required direction (blue wheel) and they 3) provide a bracket for the spring.<br> | ||
[[File:Kran_thread.png]]<br><br> | |||
Sketches and previous versions:<br> | |||
[[File:3Dplate_sketchpaper1.jpg]] | |||
[[File:3Dplate_sketchpaper1_1.jpg]]<br> | |||
[[File:3Dplate_sketchpaper3_1.jpg]] | |||
[[File:3Dplate_sketchpaper3.jpg]] | |||
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== Pulleys == | |||
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This is an assembly kit that allows to work with pulley/thread constructions in a flexible way. <br> | |||
It contains:<br><br> | |||
1) 3D printed pulley wheels <br> | |||
2) metal ball bearings <br> | |||
3) plastic suction pads and | |||
4) thread. | |||
<br><br> | |||
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