View source for 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.


{| border=1
|-
|| '''Visual Cue'''
|| '''Narration'''
|-
|| '''Slide Number 1'''

'''Title Slide '''
|| Welcome to the tutorial on '''Hatch and Array'''.
|-
|| '''Slide Number 2'''

'''Learning Objectives'''



| | In this tutorial, we will learn to,


* Clone an object
* About Hatching
* Download hatches from cadhatch.com
* About hatch lines
* About arrays
* Add various types of arrays


|-
|| '''Slide Number 3'''

'''System and Software Requirement'''

|| To record this tutorial, I am using


* '''Windows''' 11 OS and 
* '''FreeCAD v0.21.1'''</div>


|-
|| '''Slide Number 4'''

'''Pre-requisites'''


'''https://www.spoken-tutorial.org'''



|| To follow this tutorial, * Learners must be familiar with the '''FreeCAD''' interface.
* For pre-requisite tutorials, please visit this site.


|-
|| Open '''FreeCAD'''. 

Click on Create New.

Go to Draft workbench.

Select Orthographic and top view.



||Open '''FreeCAD'''.


Click on Create new to start a new file.


Go to '''Draft workbench'''.


Make sure to have orthographic and top view.
|-
|| Select the rectangle and click on the '''clone tool'''.
|| Select the rectangle and click on the '''clone tool'''.
|-
|| Cursor on the canvas.


Cursor on the left panel to show the objects.
|| A clone will get created which is not separately visible.


However we can notice a new object on the object list.
|-
|| Select the new object, click on move tool.


Move the cursor on the canvas to move the object.
|| Select this new object and move it as desired.


This is another way to copy and move an object.
|-
|| 
|| 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.


Thus user can differentiate between various areas with ease in a drawing 
|-
|| Open a web browser and go to cadhatch.com website.


Click on '''Free Downloads''' in the top menu.
|| Open a web browser and go to '''cadhatch.com''' website.


Click on '''Free Downloads''' in the top menu.
|-
|| Cursor on the various '''hatch''' styles.


Scroll down.


Choose the '''Parallel Hatch Patterns''' link.
|| Notice several patterns that we can download freely.


Scroll down and notice the parallel hatch pattern.


Choose the '''Parallel Hatch Patterns''' link.
|-
|| Scroll down and Click on the '''parallel hatch''' pattern. 
|| Click on it and a new page loads with several parallel hatch 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.


If a prompt appears, save the '''hatch zip file''' to your computer. 
|-
|| 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.


Right click to open the menu and select extract all.
|- 
|| Click on '''extract'''.


Open the extract file folder.
|| Click on '''extract'''.


Now open the '''extract''' file folder.
|-
|| 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.


Close the text file.
|| Let’s open the text file and notice a 45 degree angle.


Let’s close the text file.
|-
|| Go back to '''Freecad'''.
|| Go back to '''Freecad'''.
|-
|| Select the rectangle.


Click on '''downgrade''' once to make it to wireframe mode.
|| Select the rectangle. 


Click on '''downgrade''' once to make it to wireframe mode.
|-
|| Click once on '''upgrade''' to change the object to '''face mode'''.
|| Click once on '''upgrade''' to change the object to '''face mode'''.
|-
|| Select the face and click on the '''hatch tool'''.
|| Select the face and click on the '''hatch tool'''.
|-
|| Cursor on the left panel.


In the hatch option, click on the '''ellipsis'''.
|| The left panel mode changes.


In the hatch option, click on the '''ellipsis''' as seen.
|-
|| 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.


We can change the scale and rotation angle of the hatch as desired.
|-
|| For '''scale''' type 1 and press '''Enter'''.
|| Let’s change the scale from 5 and make it to 1.
|-
|| 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.


Next, let’s learn about arrays.
|-
|| '''Slide Number 7'''

'''What is an Array?'''



|| '''Array''' is specified number copies of an object placed in a pre-defined order


They can be placed along a line, row-wise, column wise, circular and so on.
|-
|| Click on the the non-hatched rectangle.
|| I will select the non-hatched rectangle.
|-
|| Click on the array tool in the modification panel.


Choose the first option called '''array'''.
|| Then click on the array tool in the modification panel.


Notice several types and i will choose the first option called '''array'''.
|-
|| 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 each as seen.
|-
|| Type 10 for '''X interval''', and press '''Enter'''.


Do same for '''y interval '''and''' z interval''',
|| For the '''X interval''', I will type 10 and press the '''Enter '''key.


Repeat this for y and z interval values as well.
|-
|| 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'''.
|-
|| Cursor on the canvas.
|| Learners can pause the video.


Change the values in the number of elements and intervals.


Familiarize with the various patterns that you can obtain through the arrays.
|-
|| 
|| 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.


(Circle snap center on)
|| Then, draw a line to represent the radius.


It is from the center to the circumference which is called endpoint.
|-
|| 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.


Type 12 for '''Number of elements'''.



|| Again, the options in the left panel changes.


Type 12 for '''Number of elements'''. 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.


We can see a white dot at the center as seen on the screen.
|-
|| 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 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.


I will keep symmetry to 1.
|-
|| Click on '''Ok'''.


Cursor on the new pattern.
|| Click on '''Ok'''. 


To notice the new pattern, you may need to zoom out on the screen,
|-
|| Cursor on the canvas.
|| Learners can pause the video.


Change these values and familiarize yourself with the various patterns you can create.
|-
|| 
|| Next we will create a '''path array'''.
|-
|| Select the circle and then the non-hatched rectangle.
|| I will select 2 objects from the canvas.


Hold down the '''control key''' when selecting more than one object.


First I will select the circle and then the non-hatched rectangle.
|-
|| 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'''.


Type 10 for counts.

Cursor on the canvas.
|| Scroll down the '''property tab''' in the left panel to '''counts'''.


Change '''counts''' to 10. Notice the difference on the screen.
|-
|| 
|| Save your work if desired and exit '''FreeCAD'''.
|-
|| '''Slide Number 8'''

'''Summary'''



|| Now let's summarize. 


In this tutorial, we learned about* Cloning an object
* Hatching
* Downloaded hatches from cadhatch.com
* About hatch lines
* Added various types of hatches


|-
|| '''Slide Number 9'''

'''Assignment'''

[[Image:image1.jpg.png|top]]
|| For assignment activity, please do the following.

Create hatches as seen here.
|-
|| '''Slide Number 10'''

'''Assignment'''

[[Image:image2.jpg.png|top]]
|| Create an array as seen here.
|-
|| '''Slide Number 11'''

'''Spoken Tutorial Project'''



|| This video summarizes the '''Spoken Tutorial''' Project .


Please download and watch it.
|-
|| '''Slide Number 12'''

'''Spoken Tutorial workshops'''



|| The '''Spoken Tutorial Project '''team,


<nowiki>* conducts workshops and</nowiki>* <nowiki>* gives certificates.</nowiki>

Please write to us.
|-
|| '''Slide Number 13'''

'''Forum for specific questions:'''
|| Please post your timed queries in this forum.
|-
|| '''Slide Number 14'''

'''Acknowledgement'''
|| '''Spoken Tutorial''' Project is funded by '''MoE, Government of India'''.
|-
|| 
|| This is Rani. Thank you for joining.
|-
|}