AutoCAD: The Right Hand Rule, Part 2

Do you still remember the 1st Right hand Rule? Today, let’s continue with the rule of the right hand, number 2, before raising your right hand up and clenching your fist like thumbs up (Thumb Up) as shown in the Figure 1.

Figure 1
Figure 1

When we raise our thumbs to be likened to the axis of rotation of both fingertips 4 as a direction of rotation. The direction in which the fist is clenched is Plus + and the direction opposite to the clenched fist is Minus –as shown in the Figure 2.

Figure 2

This rule applies when the UCS is to be rotated in the desired direction.

For example, if the UCS is to be rotated from its normal position, it must be parallel to work on side A as shown in the Figure 3.

Figure 3

We must rotate the UCS to hold the Y axis upright. By using the command UCS select X axis as the axis of rotation, by right hand rule the thumb points in the same direction as the X axis. In the same direction as both fingertips 4 finished, the result is as shown in the Figure 4.

Figure 4

It was found that the UCS is not parallel to the side. A We will have to rotate the UCS again to change the axis. X to the right by using the UCS command, select Y axis as the axis of rotation, according to the right-hand rule, the thumb points in the same direction as the axis. Y The X shift must be set to a negative 90-degree angle because the rotation is in the opposite direction to both fingertips. 4 finished, the result is as shown in the Figure 5.

Figure 5

Found that the UCS is rotated parallel to side A, allowing work on this side. is called the working plane. Try to create a result as shown in the Figure 6.

Figure 6

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AutoCAD: Quick Calc

Quick Cal command

Have you ever worked with AutoCAD and needed to use calculator came up but have to go out to open more programs interrupt the running time.

This is not difficult, just type a short command (hotkey) QC into the command line, it will open the Quick Calculator tool, or a calculator as shown in the picture, can be used without exiting the program.

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From to originated from Founded in 1999, the CADCOM design school was very popular at the time. with methods and techniques that have never been used to teach this type of program before.

There were more than 500 people interested in applying for the training during the period of operation (1999-2006). After achieving the goals set, Ajarn Vin Jirawat, the founder, has the intention to add knowledge to convey to those who are interested again.

The goal is to spend 10 years studying and recite the Chakram and then come back to teach again, which is this year 2016.With modern technology social network era Come back this time, CADCOM works all online. Helping Thai architects and designers add CAD capabilities to use in their work.

Today has changed to Ready for architects, engineers, decorators, graphics, contractors. If you need CAD to work with, we’ve partnered with archbox design firm to help you with new content both in English and on our YouTube Channel.

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AutoCAD: Isometric view

Working in 3D with AutoCAD has its own uniqueness. Because the program starts working in a 2D viewpoint from the top (Top view), i.e., only sees only 2 axes of work, namely X and Y from looking down at the workpiece.

Therefore, if you want to work in 3D with AutoCAD, you will need to change the default view to the view showing the Z axis. making it inconvenient to use in addition, to really work We tend to use repeated angles.

The program therefore increases convenience by adding a tool, the Views group, to meet the needs and increase the speed of work as shown in the Figure 1.

Figure 1

Tool details, this group of Views, the first part will be a 2D view in various aspects consisting of Top, Bottom, Left, Right, Front, Back.

Followed by a 3D Isometric Projection or a technical 3D image that can measure the width, length, height, like a 2D image, consisting of

SW Isometric / SE Isometric / NE Isometric / NW Isometric

You may be wondering, right? Isometric abbreviation for each view? what does it mean Let’s see the description.

Four directions of view

In order for us to communicate with others about the direction of looking at any object, we must find references to be used to achieve the same understanding first, for example, we tell people to look to the right. Everyone will understand the same. And turn to look in their own right direction at the same time, saying that we are looking at a 3D object, therefore referring to what people have the same understanding that is the direction itself.

Suppose we place the workpiece and look down from the top plane. (Top view) indicating the direction will be as shown in Figure 2.

Figure 2

That means that the Isometric abbreviation is the name of each direction that is a 45 degree diagonal view toward the workpiece. I tried to create a 3D part, then go to the Views group tool and select each view to start with.

SE Isometric

SW Isometric

NE Isometric

NW Isometric

It was found that the change of perspective works according to this principle. Can make us change perspectives quickly. But it will be an angle that is already set (preset), always at an angle of 45 degrees with the XY plane. There will be other tools to help, which will be discussed in the next chapter.

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Sketch Up: Workshop- Planter box

Sketch Up Workshop: Planter box

Cylindrical planter box covered with two marble patterns Placed beside a corridor paved with gray granite. Planting trees along the path to look shady is this week’s workshop.

Step 1: Model the planter box.

Figure 1

Start by using the Circle command (size as you wish) to create a Path first, then use the Line command to create a Face shape as in the example. For the created shape It is a cross section of the plant pot itself. The user can create the shape as needed as shown in Figure 1.

To make it beautiful, use the Arc command (Create an arc) additionally along the corners of the created shape as shown in Figure 2.

Figure 2

Then choose to remove the corner joining lines to create a curved corner, as shown in Figure 3.

The alignment of the created surface (shape) must be positioned 1/4 of the circle that serves the path as it will affect the resulting 3D model. It is advisable to move it to this position.

Figure 3

When the components are complete, go to the Follow Me command (see Instructor), follow the steps below.

Click to select a texture (Face). Click Select Path. Drag the mouse along the path circumference. Until one complete cycle to create a 3D image. As you drag the mouse, notice that the model follows the mouse stroke along the path as shown in Figure 4.

Figure 4

Finish the Follow Me step, get the model of the plant pot as shown in the picture below. The 3D model created may look like it differs from the sample depending on how the created surface looks.

Figure 5

Step 2: Add Realism with Materials

Add material to the model with the command Paint bucket (Instructor : Paint Bucket)

Select the materials available in the Brick and Cladding group.

Choose to put them into the model as you like. The example adds two materials to add interest.

After this we will get a pot of plants. Our style has come as a prototype for 1 piece as shown in Figure 6.

Figure 6

Step 3: Add other elements and arrange the view.

Potted Plants Sketch Up model is available for free download at 3D Warehouse, choose to download directly to your work.

When you get the plant, put it in the pot with the Move command and repeat it for 2 sets.

In addition, for realism in presenting, create a surface with the Line command and add materials to make the floor. footpath and lawn as shown in Figure 7.

Figure 7

After that, use Orbit command (Instructor: Orbit) to adjust the view to get an interesting angle as shown in Figure 8. It’s done.

Figure 8
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AutoCAD: Find Point Coordinates with ID Command

To know the coordinates (Co-Ordinate) of a point (Point) on Shape 2D or Form 3D, use the command ID (Command:ID).

The steps for using the command are as follows:

Figure 1

For example, there is a 2D Rectangle shape as shown in the Figure 1.

If you want to know the coordinates of the lower left corner. Type the ID command into the command prompt as shown in the Figure 2.

Figure 2

After Enter to execute the command select the desired point. For accuracy use OSNAP (e.g., Endpoint). When you click to select a point, ACAD will display the X, Y, Z coordinates immediately as shown in Figure 3.

Figure 3

In the case of a 2D shape, the Z coordinate value = 0 because there is no height value.

If it is a 3D form, it will use the same command and ACAD will display the required X, Y, Z coordinates.

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Sketch Up: Protractor command

Protractor Tool Used to measure angles and used to create lines that look like angles.

How to use the tool

1. Move the Protractor so that the tool’s center point is at one end (vertex) of the line to be constructed.

2. Click once to place the Protractor.

3. Move the mouse cursor in a circle. to create the starting point of the desired angle.

4. Click once to start the desired angle.

5. Do step 1. with the other side to assemble the corner. to get the direction of the desired angle.

6. Click once to create a degree angle.

7. Press the ESC key in case you want to cancel the command.

Keyboard shortcuts to help add options to commands.

Ctrl: To toggle the creation of the outline. or not create a draft line.

Shift : to make the Protractor adhere to the axis along the created outline.

For understanding, notice the animations included.

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