FreeCAD/C2/Hatch-and-Array/English-timed
From Script | Spoken-Tutorial
Hatch and Array-English
| Time | Narration |
| 0:00 | Welcome to the tutorial on Hatch and Array. |
| 0:05 | In this tutorial, we will learn to, |
| 0:07 | Clone an object |
| 0:09 | About Hatching |
| 0:11 | Download hatches from cadhatch.com |
| 0:17 | About hatch lines |
| 0:19 | About arrays and |
| 0:20 | Add various types of arrays |
| 0:24 | To record this tutorial, I am using Windows 11 OS and FreeCAD 0.21.1 |
| 0:35 | To follow this tutorial, |
| 0:37 | Learners must be familiar with the FreeCAD interface. |
| 0:42 | For pre-requisite tutorials, please visit this site. |
| 0:47 | Open FreeCAD. |
| 0:49 | Click on Create new to start a new drawing. |
| 0:54 | Go to Draft workbench. |
| 0:57 | Make sure the orthographic and top view are selected. |
| 01:03 | Select the Rectangle tool and draw a rectangle on the canvas. |
| 01:10 | Select the rectangle and click on the clone tool. |
| 01:15 | A clone will get created which is not separately visible. |
| 01:20 | However we can notice a new object on the object list. |
| 01:25 | Select this new object and move it as desired. |
| 01:30 | This is another way to copy and move an object. |
| 01:35 | Next, let’s add hatches on this rectangle. |
| 01:39 | Cross sections of a drawing are filled with thin parallel equally spaced lines. |
| 01:46 | Thus user can differentiate between various areas with ease in a drawing |
| 01:52 | Open a web browser and go to cadhatch.com website. |
| 01:59 | Notice several patterns that we can download freely. |
| 02:05 | Scroll down and notice the parallel hatch pattern. |
| 02:10 | Click on it and a new page loads with several parallel styles. |
| 02:16 | I will click on the very first one to download it. |
| 02:20 | For some of you the Download may start automatically. |
| 02:26 | If a prompt appears, save the hatch zip file to your computer. |
| 02:32 | Next we have to extract the files from the zip archive. |
| 02:38 | Open the file manager and select the downloaded zip file. |
| 02:43 | Right click to open the menu and select extract all. |
| 02:47 | Click on extract. |
| 02:50 | Now open the extracted file folder. |
| 02:54 | Notice 2 files in it. |
| 02:56 | One has a .pat extension and the other is a text file with details about the hatch. |
| 03:05 | Let’s open the text file, |
| 03:08 | Notice a 45 degree angle. |
| 03:12 | Let’s close the text file. |
| 03:14 | Go back to Freecad. |
| 03:17 | Select the rectangle. |
| 03:19 | Click on downgrade once to convert to edges. |
| 03:25 | Select all the edges. |
| 03:27 | Click on the upgrade tool to change to wireframe |
| 03:32 | Click again on upgrade to change to face mode. |
| 03:36 | Select the face and change the style to wireframe. |
| 03:42 | Select the face and click on the hatch tool. |
| 03:47 | The left panel mode changes. |
| 03:51 | In the hatch option, click on the ellipsis as seen. |
| 03:56 | Navigate through the dialog box and select the extracted .pat file as seen. |
| 04:03 | We don’t notice many hatch lines in the rectangle now. |
| 04:09 | For some of you the scale may be already at 1. |
| 04:13 | We can change the scale and rotation angle of the hatch as desired. |
| 04:19 | Notice that more hatch lines appear in the rectangle now. |
| 04:25 | Pause the video and change the spacing, line style and angle. |
| 04:31 | Practice to create various hatching styles. |
| 04:37 | Next, let’s learn about arrays. |
| 04:39 | Array is specified number copies of an object placed in a pre-defined order. |
| 04:48 | They can be placed along a line, row-wise, column wise, circular and so on. |
| 04:56 | I have deleted all the objects on the canvas. |
| 05:00 | Let's draw a rectangle to demonstrate arrays. |
| 05:05 | I will select the non-hatched rectangle. |
| 05:10 | Then click on the array tool in the modification panel. |
| 05:15 | Notice several types and I will choose the first option called array. |
| 05:20 | The left panel properties change and it is for a rectangular array. |
| 05:27 | For the number of elements in x, y and z, I will enter 5 in each as seen. |
| 05:36 | For the X interval, I will type 10 and press the Enter key. |
| 05:42 | Repeat this for y and z interval values as well. |
| 05:48 | Scroll to the top of the left panel and click on Ok to see the created array. |
| 05:55 | Zoom out as needed to on the canvas. |
| 05:58 | Learners can pause the video. |
| 06:02 | Change the values in the number of elements and intervals. |
| 06:07 | Familiarize with the various patterns that you can obtain through the arrays. |
| 06:13 | Next let’s learn about polar array. |
| 06:17 | First create a circle on the canvas with 25 mm radius as seen. |
| 06:24 | Then, draw a line to represent the radius. |
| 06:29 | It is from the center to the circumference which is called endpoint. |
| 06:35 | Select this line and go to the array tool. |
| 06:39 | This time choose the Polar array option. |
| 06:43 | Again, the options in the left panel changes. |
| 06:47 | Type 12 for Number of elements. |
| 06:50 | Do not press the Enter key. |
| 06:54 | Move the cursor to the circumference of the circle to locate the center of the circle. |
| 07:02 | We can see a white dot at the center as seen. |
| 07:07 | Click on it and notice that the circle is equally divided into 12 sections. |
| 07:14 | Next select the circle and the circular array on the canvas. |
| 07:20 | Click on the array tool and select the circular array option. |
| 07:25 | On the left panel several properties are seen for this array. |
| 07:32 | Radial distance, tangential distance, Number of circular layers and symmetry can be changed. |
| 07:40 | I will change it to 100, 50 and to 3 layers. |
| 07:45 | I will keep symmetry to 1. |
| 07:48 | Click on OK. |
| 07:51 | To notice the new pattern, you may need to zoom out on the screen, |
| 07:57 | Learners can pause the video. |
| 08:00 | Change these values and familiarize yourself with the various patterns you can create. |
| 08:07 | Next we will create a path array. |
| 08:10 | I will select 2 objects from the canvas. |
| 08:15 | Let's draw a rectangle. |
| 08:19 | Hold down the control key when selecting more than one object. |
| 08:25 | First I will select the circle and then the non-hatched rectangle. |
| 08:31 | Then, go to the array tool and choose the path array. |
| 08:36 | I will leave the default options as is. |
| 08:41 | Notice that the circle which was selected first moved towards the rectangle. |
| 08:47 | Scroll down the property tab in the left panel to counts. |
| 08:54 | Change counts to 10. |
| 08:57 | Notice the difference on the screen. |
| 09:00 | If desired save your work and exit FreeCAD. |
| 09:05 | Now let's summarize. |
| 09:07 | In this tutorial, we learnt about |
| 09:10 | Cloning an object |
| 09:12 | Hatching |
| 09:13 | Downloaded hatches from cadhatch.com |
| 09:18 | About hatch lines |
| 09:21 | About arrays |
| 09:22 | Added various types of arrays |
| 09:27 | For assignment activity, please do the following. |
| 09:29 | Create hatches as seen here. |
| 09:34 | Create an array as seen here. |
| 09:37 | This video summarizes the Spoken Tutorial Project . |
| 09:42 | Please download and watch it. |
| 09:45 | The Spoken Tutorial Project team, |
| 09:48 | conducts workshops |
| 09:49 | And gives certificates. |
| 09:51 | Please write to us. |
| 09:53 | Please post your timed queries in this forum. |
| 09:57 | The Spoken Tutorial Project was established by the Ministry of Education Government of India. |
| 10:05 | Thank you for joining. |
