by Wendy Huther
In this tutorial we will learn a technique for creating a circular hole in a square object in. We will use several tools and a Symmetry modifier. Enjoy!
Let's start by setting our System Unit Setup to centimeters. We can do that by going to the Main toolbar
– Units Setup
In the Units Setup dialog under Display Unit Scale, choose
then press OK.
There are several techniques for creating a circular hole in a square object, we will only be looking at one version in this tutorial, so to start let's go to the Create panel – Geometry and in Standard Primitives choose Box. In the Perspective viewport drag out a Box. We can go to the Modify panel and in the Box parameters set the Length to 200cm, Width to 200cm, Height to 50cm, Length and Width Segs set to 3 and the Height segs set to 2.
In the Perspective viewport let's turn on Edged Faces, to do this we can right click on the name Realistic which is situated in the top left corner in the viewport, then choose Edged Faces from the menu, or click anywhere in the Perspective viewport and press F4 on the keyboard. (This will enable us to view all the subdivisions in the objects)
To start editing the object we need to convert it to an Editable Poly, so to do that we can right click on the object, and in the Transform menu choose Convert To Editable Poly.
Let's go over to the Modify panel and in the Editable Poly expandable list select the Edge mode, then press the CTRL key on the key board and select the two edges in the center of the top of the Box.
In the Edit Edges rollout press the small settings icon for the Connect tool. In the settings caddy insert 3 for Segments, then press OK. (We have just created 3 new edges)
With the 3 new edges selected and holding the CTRL key down on the keyboard select the edges on either side.
Let's go back over to the Edit Edges rollout and choose the small settings icon for the Connect tool again, and in the settings caddy insert 3 for Segments, then press OK.
Now let's change to Polygon mode and select all the polygons in the section. To do this hold down the CTRL key on the keyboard and click on each one.
We will go back over to the Edit Polygons rollout and press the small settings icon for the Inset tool. In the Inset settings caddy insert 2,0, then press OK.
With those polygons still selected, hold down the CTRL key again, and choose Vertex mode. The polygons will automatically convert to vertices.
Now we can go to the Vertex Edit Geometry and press the Collapse tool icon.
Now we will add a Chamfer to the vertex, so let's press the small settings icon for the Chamfer tool, and in the Chamfer settings caddy set the vertex Chamfer Amount to 25,0, then press OK.
We have just created a large piece of geometry, let's select Polygon mode and select the polygon. Now we can go to Edit Polygons and choose the Inset tool. Press the small settings icon and in the Inset caddy set the Inset Amount to 0,5, then press OK.
Now we will add an Extrude to the polygon. Press the small settings icon for the Extrude tool and choose Local Normals and set the Height to -0,5, then press Apply, we can continue and add another Extrude, this time set the Height to -24,5, then press OK.
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