Telescoping Tennis Ball Toy
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A fun fidget in the shape of a tennis ball. Made in collaboration with @JohnDoe2915710.
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Updated at source:
Model information
- Source
- Printables
- Category
- Other Toys & Games
- License
- Creative Commons — Attribution — Noncommercial
Design Statement:
The assignment was to pick a 2D shape and create a telescoping fidget based on the shape. We decided to make a tennis ball fidget because both collaborators play tennis.
Creation in Solidworks:
We began with a reference image, which we copied into Solidworks. We used a tennis ball, but it can be done with any shape. We chose to make the shape 8cm wide, and the shape chosen now will dictate the overall size.
After tracing the outline, we offset inward many times until the shape was too small to offset.
Then, we took the outermost shape and boss extruded it 0.75 cm at an inward draft angle of 15 degrees. We cut extruded the same inward angle and height with the next biggest shape, and we repeated boss extrude and cut extrude alternating until cut extruding wouldn’t reach the other side.
Finally, we mirrored everything across the wider side.
Design Changes:
Our original model had three unconnected pieces, so we needed a way for everything to be connected. To do this, I repeated the whole extrusion process but started with a ring that surrounded everything.
However, this got rid of the grooves that make it feel like a tennis ball, so I decided to two more cut extrusions to get the grooves back.
I also chose to use a filament color that matches a tennis ball.
