# Collide Sphere

In this Kangaroo Grasshopper tutorial, we will use a simple method of a collision that collides a series of spheres with a solid, based on gravity! We can also add a floor to the definition and let the particles bounce on the floor!

In this Beginner Rhino Grasshopper Tutorial we are going to model a polygonal concrete Planter from scratch and then use the Pufferfish plugin to give it a thickness.

In this 3D Printing Fabric video (from the 3D Printing tutorial series), we will look at different ways you can use 3D printing to make Fabrics. Then, we will model simple chainmail in Rhino Grasshopper.

In this Weaverbird Grasshopper Tutorial, we are going to use two simple boxes to model the base parametric shape of the smooth mesh. We will use the Weaverbird plugin to smooth the final results.

In this Rhino Grasshopper tutorial, we are going to model a parametric rotating 3d pattern on a curve (closed or open) and then convert it into a smooth mesh.

In this Rhino Grasshopper tutorial, you will learn how to use the Pufferfish plugin component called "Twisted Box Through Surfaces" to morph a dodecahedron between two surfaces.

In this Rhino Grasshopper Tutorial, you can model a series of twisting boxes by defining rectangular sections and then use the graph mapper to extract the non-linear distribution of the sections.

In this Rhino 7 grasshopper tutorial, we are going to take a look at the Subd component called "Multipipe" and how you can use it in Grasshopper to model a parametric polar model.

In this tutorial, we will show how to make a Trefoil Knot in Rhino Grasshopper and then remodel it by defining geometrical parameters.

In this Rhino Grasshopper Tutorial, we are going to model a parametric circular Loft surface by using the Graph Mapper Component.

In this Rhino Grasshopper tutorial, we are going to model a waffle structure from a Torus. First, we are going to study the constraints of geometry, and then we will extract the curves for fabrication.

In this rhino grasshopper tutorial, we are going to model a parametric stair from scratch. first, we are going to explain how to model the base curves of the stairs in Rhino and then we will translate it into grasshopper code.

In this Rhino Grasshopper Tutorial, we are going to model a parametric building from scratch. First, we are going to define a base curve and then we are going to use the Anemone Plugin to model the roof of the building.

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## Comments

## David

Will you please elaborate more on why the spheres were falling through the box? I often experience a lot of trouble getting my points to interact with my solids