# Evaluate Surface

In this video tutorial, I will explain how you can extract a parametric point from a surface by using “Evaluate Surface”. Evaluate Surface can be used to extract a point from a NURBS surface.

In this video tutorial, I will explain how you can extract a parametric point from a surface by using “Evaluate Surface”. Evaluate Surface can be used to extract a point from a NURBS surface.

Posted in Rhino Grasshopper.

- 26th February 2018
### Octree

In this Video tutorial, I will explain how you can use the Octree component in grasshopper. You can easily make a parametric octree with random points and then use the random reduce component to delete the boxes which are created by octree.

- 11th August 2018
### Parametric Bench

In this Grasshopper tutorial, I will model a parametric bench by using three different sections and a curve as the bench’s rail. First I will orient the sections on the rail and then I will sweep to produce the results. In the end, we will make the sections with per frames.

- 15th September 2018
### Parametric Facade

In this Parametric Facade tutorial, I will show you how you can use multiple dispatches to produce a parametric facade. First, we will use a simple curved surface for the facade and then we will use the Lunchbox plugin to panel it with triangles. Then we will work on the vertices of the triangles to finish the modeling.

- 20th July 2018
### Turning Towers

In this grasshopper tutorial First, I will model a parametric twisting tower and I’ll explain how you can make a series of scaled roofs. Then I will show you how you can use the cluster input/output tools to create user object from the model.

- 6th October 2018
### Beijing Water Cube

In this Grasshopper tutorial, I will model the Bejing Water Cube in Grasshopper. First I will explain the steps we have to take to reach the final model and then I will explain the steps one by one. We will start with a shell box and then use Voronoi3d to produce the results.

- 15th January 2019
### Rotating Units

In this Rhino Grasshopper Lesson, I will show you how to rotate a series of surfaces around their edges and then control how many of the starting and ending ones have a zero rotation. First, we will divide a surface into sections and then extract the edge and finally rotate the panels around the edge.

- 9th July 2018
### Scale Nu

In this grasshopper tutorial I will talk about the Scale NU tool and how you can use it to scale a set of rectangles non uniformly. First we will array a square and then define a rotated plane to scale the squares diagonally. We will use point attractors to define the weight of scale.

- 15th December 2018
### Parametric Arcs

In this Rhino Grasshopper Tutorial, I will show you how to make a series of parametric Arcs. So first we are going to talk about the Arc component and the inputs and how we can control them and then we are going to dive into a more advanced modeling technique.

- 12th November 2018
### Paneling Tools – 2d Cellulate

In this Paneling Tools Grasshopper tutorial, I will show you how you can use the grid attractors and the cellulate grid tool to produce a series of deforming circles based on point or curve attractors

- 18th February 2019
### ONE Teahouse

In this Rhino Grasshopper tutorial, I will model something similar to the ONE Teahouse / MINAX Architects. First, we will define a box and a sphere. Then we will scale NU the sphere so we can control the shape. If we divide the surface of the scaled Sphere into points, Project these points on to the Box and connect them we will have a series of parametric lines which we can finally turn them into a box.

- 28th November 2018
### Parametric Pattern #1

In this Laser cut design video, I have made a definition to produce a parametric pattern for laser cutting. First I will explain the inputs and how you can change them to change the base pattern and in the end, you can give thickness to your design.

- 6th November 2018
### Metaball 2D

In this metaball Grasshopper tutorial, I will teach you how you can produce a freeform column model that merge together and form a metaball. First, we will produce the point charges and then based on a profile curve we will produce the metaball curves.

- 15th July 2018
### Space Truss Structure 1

In this Grasshopper Tutorial, I will talk about the Space Truss Structure 1 from the Lunchbox plugin. First I will make a freeform Surface and then I will use this tool to convert it to a Space Truss Structure and at the end, you will learn how you can use grasshopper to model some of the structure’s details.

- 24th October 2018
### Parametric Table

In this Grasshopper tutorial, I will model a parametric table and show you how you can use a simple trick to get help from Rhino to model the table easier. First I will model a simple solid in Rhino and then I will use Cage edit and Grasshopper to find the best design for the table

- 1st January 2018
### Pipe Variable

In this video tutorial I will explain how you can use Pipe variable and isotrim to produce a parametric surface. First we will use the pipe variable tool to produce a pipe which its radius changes at different locations and then we…

- 18th February 2018
### Sweep1

In this video tutorial, I will talk about how you can use sweep1 to produce a parametric surface. first we will define a curve for the rail parameter and then we will orient a section in to the curve and finally sweep the section with the rail to produce the result.

- 22nd October 2018
### Carnaval Chair

In this Grasshopper tutorial, I will model the Carnaval chair. First I will explain the curves and how we can model them with NURBS curves. Then I will go for the sections to actually model the chair. We will also model the wires at the end.

- 26th November 2018
### Attractor Voronoi Cells

In this Grasshopper Voronoi attractor tutorial, I will show you how you can produce point attractors for Voronoi cells. First, we will make the desired boundaries and then populate points in them to increase the number of Voronoi cells.

- 30th December 2017
### Gradient

In this tutorial, I will explain how you can use Gradient to color a set of panels based on their height. First we will produce the panels by isotrim and then we will extract the panels center and use the z component to define the height of the panels. Finally we will use….

- 28th April 2018
### Bend Deform

In this Video tutorial, I will explain how you can use the Bend Deform component in grasshopper. You can easily bend geometry with this tool. First we will use a simple Arc SED tool to produce the arc and then we will bend a box with the Bend Deform tool.

- 3rd September 2018
### Contour Table

In this Contour Table tutorial, I will show you how easy you can model a table from a base surface and then contour it to produce the solids. You can deform the table with cage edit to make some deformation on the main model.

- 8th January 2018
### Contour Table #1

In this collaborative video with Kinetic Architecture, I teach how you can model the contour table with another method

- 19th July 2018
### Voronoi on surface

In this grasshopper tutorial I will talk about the populate geometry tool and how you can use it to produce a set of voronoi cells on a freeform surface. First we will make a rectangular boundary based on our freeform surface and then we will make the voronoi cells.

- 27th August 2018
### Parametric Brick Wall

In this tutorial, I will model a Parametric Brick Wall in Grasshopper and I will show you how you can use the horizontal frames to orient a brick on a freeform surface and make the Parametric Brick Wall.