Thingiverse
OCI (Orthogonal Cylinder Intersection)
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This is mostly just an 'interesting shape' thing.
Background:
- A 2D projection of a sphere appears to be a circle, no matter the orientation of the sphere.
- A 2D projection of a cylinder appears to be a circle, as long as you're looking down the axis of the cylinder.
- If you intersect three orthogonal cylinders, you get an object that appears circular along each cylinder axis, but it is NOT a sphere.
To make:
- Print two copies of the .STL.
- Stick them together (paying attention to lining up the 'edges').
Background:
- A 2D projection of a sphere appears to be a circle, no matter the orientation of the sphere.
- A 2D projection of a cylinder appears to be a circle, as long as you're looking down the axis of the cylinder.
- If you intersect three orthogonal cylinders, you get an object that appears circular along each cylinder axis, but it is NOT a sphere.
To make:
- Print two copies of the .STL.
- Stick them together (paying attention to lining up the 'edges').
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