Emboss Swept Example 1

Introduction

This help topic provides a basic example to help you get started creating Emboss Swept features. By providing the fundamental information about this feature type, this topic can be useful for beginners or advanced users alike.

 

For this example, you start from a new BobCAM for Rhino file. The entire process of creating an Emboss feature is explained.

Important Notes

• There are two geometry items used: the feature geometry and the cross section.
• The feature geometry defines the path of the sweep (in X and Y).
• The cross section defines the shape of the emboss (in Z) that is swept along the feature geometry.
• The feature geometry can be either open or closed geometry chains.
• One or more chains can be selected for a single feature.

Example

Part 1) Create Geometry

The Emboss Swept feature geometry can be any combination of open or closed chains. The entities used for the chains can be any combination of lines, arcs, and splines.

 

1. In the File menu, click New and select the Small Objects - Millimeters.3dm template.
   
   
2. In the Command Line, type Arc and press Enter.
   
   
3. In the Command Line, type 89,89 and press Enter to set the center of the arc.
   
   
   
   
4. In the Command Line, type r51,0 and press Enter to set the radius of the arc.
   
   
   
   
5. In the Command Line, type 360 and press Enter to set the angle of the arc.
   
   
   
   

Part 2) Create Stock

1. In the BobART Manager, right-click Emboss Model, and click Create/Modify Stock.
   
   

2. In the Stock Parameters dialog box, in the Origin group, double-click (click twice quickly) in the X box so that the entire value is selected. Type 25.000 and press Tab.
   
   

3. In the Y box, type 25.000.
   
   The Origin settings define the lower-left corner (origin) of the stock in the graphics area. The Origin values set the distance from the WCS or world coordinate system. This is also known as the CAD coordinate system.
   
   

4. In the Model Size group, set the X value to 127.00, and set the Y value to 127.00.
   
   These values represent the length of the stock along each of the X- and Y-axes.
   
   

5. To set the color of the stock, click Color. In the Color dialog box, click a color and then click OK. For this example, click the fifth color in the first row (Row 1, Column 5).
   
   

6. The stock parameters are now defined. To close the dialog box and create the stock, click OK.

 

 

Notice the location of the stock origin (lower-left corner). Also note that the geometry created earlier is contained within the bounds of the stock.

 

The stock for embossed models is created with zero thickness.

Part 3) Add the Feature

1. In the BobART Manager, right-click Emboss Model, and click Emboss Swept.
   
   

2. In the Emboss dialog box, in the Emboss Attributes group, click in the Name box.
   
   

3. At the beginning of the description, type My so that the description displays My Emboss Swept 1.
   
   

4. To define the color of the feature, click Color. In the Color dialog box, click a color and click OK.
   
   

5. In the Emboss group, confirm that Convex Arc is selected. Also confirm that the Application Type is set to Add.
   
   

6. In the Radius box, type 13.000. Notice that the cross section preview is updated in the dialog box.
   
   All of the other settings remain at the default values.
   
   
   
   

7. To close the dialog box and add the feature to the BobART tree, click OK.

 

In the BobART tree, notice that the feature, My Emboss Swept 1 - Add, is added under Emboss Model. The red x through the Emboss icon lets you know that the model needs to be Regenerated to update the current settings. The model is Regenerated after selecting geometry in the next part.

Part 4) Select Geometry

1. In the BobART tree, under My Emboss Swept 1 - Add, right-click Geometry, and click Re/Select.
   
   

2. In the graphics area, point to the arc that you created earlier and select it.
   
   The arc then changes to the selection color to show that it is selected.
   
   
   
   

3. To confirm the selection, click OK.

 

The geometry selection for the feature is complete.

 

Tip: When selecting geometry for Emboss features, you often need to hide the embossed model.

To hide the Embossed model/stock:

• Right-click Emboss Model, and click Blank/Unblank.

Part 5) Regenerate

When working with Emboss features, every time that you add a new feature or modify an existing feature, the model must be regenerated.

 

1. To add the Emboss feature to the model, right-click Emboss Model, and click Regenerate.

 

Notice the red x through the icon. This symbol means that changes have been made that are not yet included in the model. After regenerating, the symbol changes to Emboss Model.

 

 

Notice that the cross section, defined in the Emboss dialog box, is swept along the entire length of the feature geometry. The cross section defines the shape of the emboss vertically in Z. The Application Type, Add, means that the feature is added (or raised) in the positive Z-axis. The Z-height of the feature is 13.000 MM because of the 13.00 radius (Convex Arc) cross section used.

Part 6) Edit the Feature

After creating an Emboss Swept feature, you can edit the feature to make changes to the model. To edit the feature, you use the Emboss Feature in the BobART Tree.

 

1. In the BobART tree, right-click My Emboss Swept 1 - Add, and click Edit.
   
   

2. In the Emboss dialog box, click the Cross Section arrow and click Concave Arc.
   
   

3. To close the dialog box, click OK.
   
   

4. To update the model and show the result of the new setting, right-click EmbossModel, and click Regenerate.
   
    
   
   Again, the defined cross section is swept along both sides of the selected feature geometry.
   
   

5. Edit the feature (as in step 1).
   
   

6. In the Emboss group, click the Application Type arrow and click Subtract. This means that the feature is lowered in the negative Z-axis direction.
   
   

7. Click OK to close the dialog box, and Regenerate the model (as in step 4).

 

 

Part 7) Create a Line

1. In the Command Line, type Line and press Enter to draw a line.
   
   
2. In the Command Line, type b and press Enter to set the line to Both Sides.
   
   
3. Select the center of the arc to place Middle of Line.
   
   
   
   
4. In the Command Line, type 140,140 and press Enter to set the end of the line pointing in line with the corners of our emboss.
   
   
   

Part 8) Select Multiple Chains for a Single Feature

You can select multiple chains for a single Emboss Swept feature. The process of sweeping the cross section along the chain to create the emboss is applied to each chain regardless of how many chains are selected.

 

Tip: In the BobART tree, click My Emboss Swept 1 - Subtract. Notice that the feature geometry is highlighted in the graphics area. You can use this preview to locate each feature when the BobART tree contains multiple features.

 

1. In the BobART Manager, right-click Geometry, and click Re/Select.
   
   
   
   Notice that the previous feature geometry is still highlighted. This shows that it is still selected.
   
   

2. In the graphics area, click the line to select it.
   
    
   
   

3. To confirm the selection, click OK.
   
   
   
   Notice that the feature preview is shown after confirming the geometry selection. This is because the Geometry item in the BobART tree is currently selected. Click Emboss Model and the preview is no longer shown.
   
   

4. Right-click My Emboss Swept 1 - Subtract, and click Edit.
   
   

5. Set the Cross Section to Convex Arc, and set the Application Type to Add. Click OK.
   
   

6. To update the model, right-click Emboss Model, and click Regenerate.

 

 

Note: When combining multiple emboss features, the Add application type adds the results of each feature together. In the previous images, because the two separate chains were selected for a single Emboss Swept feature, they are created at the same height (13.00). The following images show the result of creating two Emboss Swept features and assigning the arc to one feature and assigning the line to the other feature.



The result is that the intersecting areas of the two features are added together. The 13.00 arc used for each feature results in the total Z-height of the model of 26.00.

Part 9) Modifying the Cross Section

When using the cross-section types, Convex Arc or Concave Arc, you can modify the cross section using the Start Angle and End Angle parameters.

 

1. Right-click My Emboss Swept 1 - Add, and click Edit.
   
   

2. In the Emboss dialog box, in the Start Angle box, type 45.00.
   
   This causes the cross section to start at the midpoint of the arc (45 is half of 90). The range of possible values for the Start Angle and End Angle are from 0.00 to 90.00 degrees.
   
   

3. To close the dialog box, click OK.
   
   

4. To view the change in the model, Regenerate.
   
   

 

The Z-height of the model is now much lower than the previous result.

Part 10) Modify the Cross Section in the Emboss Dialog Box

When using any of the standard cross-section types in the Emboss dialog box, you can manually edit the cross section using the cross section preview that is displayed in the dialog box.

 

1. Edit the feature. In the Emboss group, click the Cross Section arrow and click Line
   
   

2. In the preview, click the red point on the right side. Drag (click and hold the mouse button) the point left to the vertical 0.125 grid line as shown next.
   
   
   
   

3. Notice that the parameters of the line are updated in the Cross Section group.
   
   

4. Click OK.
   
   

5. Regenerate the model to view the changes.

 

Part 11) Using Fast Edit

The Fast Edit section of the Emboss dialog box is used to scale the cross section or to add a base height which creates a wall at the bottom of the feature.

 

1. To better show the results of using the Fast Edit parameters, edit the feature.
   
   Set the Cross Section to Convex Arc, and set the Radius to 13.00. Set the Start Angle to 0.00.
   
   Regenerate the feature. The model should appear as it did earlier in this example.
   
   
   
   

2. Edit the feature. In the Fast Edit group, set the Base Height to 1.00.
   
   

3. Click OK, and Regenerate the model.
   
    
   
   

4. Edit the feature. In the Fast Edit group, set the X-Y Scale to 0.500, and set the Z Scale to 1.500.
   
   These settings cause the defined cross section to be 50 percent of the size in the X- and Y-axes and 150 percent of the size in the Z-axis.
   
   

5. Regenerate the feature to show the results.

 

 

Note: When using the X-Y Scale and Z Scale parameters, only the Cross Section is scaled. The scaling does not affect the Base Height or the feature geometry.

Part 12) Define a Custom Cross Section

In addition to using the standard cross-section types that are available in the Emboss dialog box, you can also define a custom cross section using geometry that you create in the graphics area.

 

To learn more, view How to Use a Custom Cross Section.

 

 

This concludes the example.

Related Topics

BobART Overview