FreeCAD/C2/Hatch-and-Array/English
Title of script: Hatch and Array
Author:
Keywords: Freecad, hatch, array, cadhatch site, about hatching, rectangular array, polar array, circular array, path array, video tutorial.
Visual Cue | Narration | ||
Slide Number 1
Title Slide |
Welcome to the tutorial on Hatch and Array. | ||
Slide Number 2
Learning Objectives
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In this tutorial, we will learn to,
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Slide Number 3
System and Software Requirement |
To record this tutorial, I am using
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Slide Number 4
Pre-requisites
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To follow this tutorial,
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Open FreeCAD.
Click on Create New. Go to Draft workbench. Select Orthographic and top view.
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Open FreeCAD.
Go to Draft workbench.
Select the rectangle tool and draw a rectangle on the canvas. | ||
Select the rectangle and click on the clone tool. | Select the rectangle and click on the clone tool. | ||
Cursor on the canvas.
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A clone will get created which is not separately visible.
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Select the new object, click on move tool.
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Select this new object and move it as desired.
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Next, let’s add hatches on this rectangle. | |||
Slide Number 6
What is a Hatch? |
Cross sections of a drawing are filled with thin parallel equally spaced lines.
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Open a web browser and go to cadhatch.com website.
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Open a web browser and go to cadhatch.com website.
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Cursor on the various hatch styles.
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Notice several patterns that we can download freely.
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Scroll down and Click on the parallel hatch pattern. | Click on it and a new page loads with several parallel styles. | ||
Click on the very first one to download it. | I will click on the very first one to download it. | ||
Cursor on screen. | For some of you the Download may start automatically.
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Show the downloaded file. | Next we have to extract the files from the zip archive. | ||
Open the file manager and select the downloaded zip file. | Open the file manager and select the downloaded zip file.
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Click on extract.
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Click on extract.
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Cursor on the extracted files. | Notice 2 files in it. | ||
Cursor on the files. | One has a .pat extension and the other is a text file with details about the hatch. | ||
Open the text file and cursor on the file text.
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Let’s open the text file, notice a 45 degree angle.
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Go back to Freecad. | Go back to Freecad. | ||
Select the rectangle.
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Select the rectangle.
Select all the edges. Click on the upgrade tool to change to wireframe | ||
Click once on upgrade to change the object to face mode. | Click again on upgrade to change to face mode.
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Select the face and
click on the hatch tool. |
Select the face and change the style to wireframe.
Select the face and click on the hatch tool. | ||
Cursor on the left panel.
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The left panel mode changes.
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select the extracted .pat file in the dialog box. | Navigate through the dialog box and select the extracted .pat file as seen. | ||
Cursor in the rectangle. | We don’t notice many hatch lines in the rectangle now. | ||
For scale type 1 and press Enter. | For some of you the scale may be already at 1.
We can change the scale and rotation angle of the hatch as desired. | ||
Cursor on the rectangle. | Notice that more hatch lines appear in the rectangle now. | ||
Pause the video and change the spacing, line style and angle. | |||
Cursor on the hatched lines. | Practice to create various hatching styles.
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Slide Number 7
What is an Array?
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Next let's learn about arrays.
Array is specified number copies of an object placed in a pre-defined order.
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Point to the canvas | I have deleted all the objects on the canvas. |
Let's draw a rectangle to demonstrate arrays. | |||
Click on the the non-hatched rectangle. | I will select the non-hatched rectangle. | ||
Click on the array tool in the modification panel.
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Then click on the array tool in the modification panel.
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Cursor on the left panel. | The left panel properties change and it is for a rectangular array. | ||
For number of elements in x, y and z, type 5 each. | For the number of elements in x, y and z, I will enter 5 in each as seen. | ||
Type 10 for X interval, and press Enter.
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For the X interval, I will type 10 and press the Enter key.
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Scroll to the top of the left panel and click on Ok. | Scroll to the top of the left panel and click on Ok to see the created array. | ||
Zoom out as needed to on the canvas. | |||
Cursor on the canvas. | Learners can pause the video.
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Next let’s learn about polar array. | |||
Create a circle on the canvas with 25 mm radius. | First create a circle on the canvas with 25 mm radius as seen. | ||
Draw a line to represent the radius.
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Then, draw a line to represent the radius.
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Select this line and go to the array tool. | Select this line and go to the array tool. | ||
Choose the Polar array option. | This time choose the Polar array option. | ||
Cursor on the left panel.
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Again, the options in the left panel changes.
Do not press the Enter key. | ||
Move the cursor to the circumference of the circle to locate the center of the circle. | Move the cursor to the circumference of the circle to locate the center of the circle.
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Click on it and notice that the circle is equally divided into 12 sections. | Click on it and notice that the circle is equally divided into 12 sections. | ||
Select the circle and the circular array. | Next select the circle and the circular array on the canvas. | ||
Click on the array tool and select the circular array option. | Click on the array tool and select the circular array option. | ||
Cursor on the left panel. | On the left panel several properties are seen for this array. | ||
Cursor on the various options. | Radial distance, tangential distance, Number of circular layers and symmetry can be changed. | ||
Type 100 for radial distance.
Type 50 for tangential distance. Type 3 for circular layer. |
I will change it to 100, 50 and to 3 layers.
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Click on Ok.
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Click on Ok.
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Cursor on the canvas. | Learners can pause the video.
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Next we will create a path array. | |||
Select the circle and then the non-hatched rectangle. | I will select 2 objects from the canvas.
Let's draw a rectangle. Hold down the control key when selecting more than one object.
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Go to the array tool and choose the path array. | Then, go to the array tool and choose the path array. | ||
I will leave the default options as is. | |||
Cursor on the movement. | Notice that the circle which was selected first moved towards the rectangle. | ||
Scroll down the property tab in the left panel to counts.
Cursor on the canvas. |
Scroll down the property tab in the left panel to counts.
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If desired Save your work and exit FreeCAD. | |||
Slide Number 8
Summary
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Now let's summarize.
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Slide Number 9
Assignment |
For assignment activity, please do the following.
Create hatches as seen here. | ||
Slide Number 10
Assignment |
Create an array as seen here. | ||
Slide Number 11
Spoken Tutorial Project
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This video summarizes the Spoken Tutorial Project .
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Slide Number 12
Spoken Tutorial workshops
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The Spoken Tutorial Project team,
Please write to us. | ||
Slide Number 13
Forum for specific questions: |
Please post your timed queries in this forum. | ||
Slide Number 14
Acknowledgement |
The Spoken Tutorial Project was established by the Ministry of Education Government of India. | ||
Thank you for joining. |