<b>Narration</b>

1
00:00:00 --> 00:00:05
Welcome to the tutorial on <b>Modifications and Dimensioning</b>.

2
00:00:06 --> 00:00:08
In this tutorial, we will learn to,

3
00:00:09 --> 00:00:11
Create multiple lines

4
00:00:12 --> 00:00:13
Split a line

5
00:00:14 --> 00:00:18
Use <b>snap tools </b>when adding intersections of lines

6
00:00:19 --> 00:00:22
Add <b>fillet </b>and add <b>chamfer</b>

7
00:00:23 --> 00:00:26
Measure an angular dimension

8
00:00:27 --> 00:00:29
Add a <b>leader line </b>

9
00:00:30 --> 00:00:41
To record this tutorial, I am using <b>Windows </b>11<b> OS</b> and <b>FreeCAD </b>version 0.21.1.

10
00:00:42 --> 00:00:42
To follow this tutorial,

11
00:00:43 --> 00:00:47
Learners must be familiar with the <b>FreeCAD</b> interface.

12
00:00:48 --> 00:00:52
For pre-requisite tutorials, please visit this site.

13
00:00:53 --> 00:00:55
Open <b>FreeCAD.</b>

14
00:00:56 --> 00:00:59
Click on <b>Create New </b>to start a new file.

15
00:01:00 --> 00:01:02
Go to <b>Draft</b> workbench.

16
00:01:03 --> 00:01:07
Make sure the <b>orthographic</b> and <b>top view</b> are selected.

17
00:01:08 --> 00:01:10
Then select the <b>line tool</b>.

18
00:01:11 --> 00:01:14
Notice the changes in the <b>Combo view </b>panel.

19
00:01:15 --> 00:01:18
Check the box for the <b>Continue </b>option.

20
00:01:19 --> 00:01:25
We can draw multiple discontinuous lines or continuous lines now.

21
00:01:26 --> 00:01:31
We don’t have to select the line tool each time to draw a different line.

22
00:01:32 --> 00:01:35
To demonstrate I will add a few lines.

23
00:01:36 --> 00:01:44
Several line objects are added on the <b>combo view</b> as we add more lines.

24
00:01:45 --> 00:01:48
To exit this mode, press the <b>escape key</b>.

25
00:01:49 --> 00:01:55
Next, select one of the lines and select the <b>split tool</b>.

26
00:01:56 --> 00:02:02
Place the cursor on the line and left click to <b>split</b> the line at that point.

27
00:02:03 --> 00:02:08
Notice the 2 line objects in the <b>combo view</b> panel.

28
00:02:09 --> 00:02:14
Next, let’s learn about snap tools in line drawings.

29
00:02:15 --> 00:02:18
I will click on 8 of the <b>snap tools</b> as seen.

30
00:02:19 --> 00:02:24
It is useful to keep them on as you progress in your drawing skills.

31
00:02:25 --> 00:02:31
Next, let’s create a drawing to learn the options present in snap tools.

32
00:02:32 --> 00:02:35
Choose the <b>line tool</b> and check the box for <b>continue</b>.

33
00:02:36 --> 00:02:40
Let’s draw one horizontal line.

34
00:02:41 --> 00:02:45
Check the <b>snap end point tool</b> and draw two lines.

35
00:02:46 --> 00:02:53
For this feature to be visible, the <b>snap ortho tool</b> is in the <b>on</b> mode.

36
00:02:54 --> 00:02:58
Then we know that the line is horizontal.

37
00:02:59 --> 00:03:02
Move the cursor to draw a line.

38
00:03:03 --> 00:03:09
Notice the blue color + symbol, with the + symbol of the cursor.

39
00:03:10 --> 00:03:16
The blue + symbol appears only when the line is horizontal or vertical.

40
00:03:17 --> 00:03:20
Move the cursor close to the end of the line.

41
00:03:21 --> 00:03:25
Notice a White dot on the line and a blue guide.

42
00:03:26 --> 00:03:30
Since the <b>Continue</b> option is on, we can continue to draw line.

43
00:03:31 --> 00:03:34
Let’s add labels on the line.

44
00:03:35 --> 00:03:40
Notice the <b>snap end-point</b> is on in the <b>snap tools</b>.

45
00:03:41 --> 00:03:43
Click on the <b>text tool</b>.

46
00:03:44 --> 00:03:49
Move the cursor near the point to where the annotation is desired.

47
00:03:50 --> 00:03:53
Notice the White dot and left click.

48
00:03:54 --> 00:03:59
A dialog box to type custom text appears on the left.

49
00:04:00 --> 00:04:03
I will type <b>A </b>in this.

50
00:04:04 --> 00:04:12
If you don’t see the label sign, go to the <b>data</b> tab and increase the font size.

51
00:04:13 --> 00:04:14
Now pause the video.

52
00:04:15 --> 00:04:21
Repeat this procedure to label the other end of the line with <b>C</b>.

53
00:04:22 --> 00:04:26
Notice that the <b>snap mid-point </b>is <b>on</b>.

54
00:04:27 --> 00:04:32
We can also label the mid-point of the line in the same way.

55
00:04:33 --> 00:04:38
Pause video and label the mid-point as <b>B</b>.

56
00:04:39 --> 00:04:45
Click on the <b>line tool</b> again and make sure the <b>snap perpendicular</b> is on.

57
00:04:46 --> 00:04:51
Place the cursor on the canvas and move it towards the line.

58
00:04:52 --> 00:04:58
When we see the blue ‘+’ sign, we know that the new line will be perpendicular.

59
00:04:59 --> 00:05:07
Pause the video, and create a label called <b>D</b>, at this new line intersection.

60
00:05:08 --> 00:05:12
Next let’s learn about <b>snap intersection</b>.

61
00:05:13 --> 00:05:18
For this, we first have to turn off all other snap tools.

62
00:05:19 --> 00:05:24
Move the cursor to near the intersection of the two lines.

63
00:05:25 --> 00:05:29
The blue cross shows the intersection between the two lines.

64
00:05:30 --> 00:05:35
Let’s create another line from the intersection point.

65
00:05:36 --> 00:05:38
Left click and move the cursor.

66
00:05:39 --> 00:05:44
Notice that line properties change in the left panel.

67
00:05:45 --> 00:05:50
Type the angle to be 45 degrees and press the <b>Enter</b> key.

68
00:05:51 --> 00:05:55
Notice the intersecting line at 45 degrees.

69
00:05:56 --> 00:06:04
Pause the video and create two more labels of the remaining ends of the line.

70
00:06:05 --> 00:06:07
I will label them <b>E</b> and <b>F.</b>

71
00:06:08 --> 00:06:11
Let’s draw a rectangle next.

72
00:06:12 --> 00:06:17
Edges and faces are often rounded off in <b>engineering</b> drawing.

73
00:06:18 --> 00:06:25
This practice aid to reduce stress points and are called <b>fillet</b> or <b>chamfer</b>.

74
00:06:26 --> 00:06:29
Rectangle is a closed loop single entity.

75
00:06:30 --> 00:06:37
Hence, first downgrade the object to individual lines before <b>fillet</b> is applied.

76
00:06:38 --> 00:06:42
Next, select two neighboring edges or lines.

77
00:06:43 --> 00:06:43
Click on <b>fillet.</b>

78
00:06:44 --> 00:06:49
Change the <b>fillet</b> value to 10 mm and press the <b>Enter key</b>.

79
00:06:50 --> 00:06:54
Notice the sharp edge is now smoothened over.

80
00:06:55 --> 00:07:00
Notice that both the original object and the <b>fillet</b> are present now.

81
00:07:01 --> 00:07:05
Again, select two adjacent lines, and click on <b>fillet</b>.

82
00:07:06 --> 00:07:11
Next, check the box for <b>delete the original object</b>.

83
00:07:12 --> 00:07:18
Enter 12 for <b>fillet</b> and notice that only <b>filet</b> remains.

84
00:07:19 --> 00:07:23
Next, pick another set of adjacent lines in the rectangle.

85
00:07:24 --> 00:07:27
Then choose the <b>fillet</b> tool.

86
00:07:28 --> 00:07:33
This time, check the box for both <b>chamfer</b> and <b>delete original object</b>.

87
00:07:34 --> 00:07:41
Notice that <b>Chamfer</b> is more smooth and rounded around the corner than <b>fillet</b>.

88
00:07:42 --> 00:07:46
Often we have to make angular measurements in the drawing.

89
00:07:47 --> 00:07:49
Click on <b>dimension</b>.

90
00:07:50 --> 00:07:54
Hold down <b>Shift</b> and <b>Alt</b> keys.

91
00:07:55 --> 00:07:59
Notice the parameter changes in <b>combo view</b>.

92
00:08:00 --> 00:08:06
Holding the keys down, select the two lines where the angle is to be measured.

93
00:08:07 --> 00:08:12
We can measure the inside or outside dimension.

94
00:08:13 --> 00:08:18
Move the cursor on the canvas between and outside the selected lines.

95
00:08:19 --> 00:08:24
Notice the arc denoting the measurement also flips.

96
00:08:25 --> 00:08:29
Left click once to measure the angle.

97
00:08:30 --> 00:08:34
Only now, release the <b>SHIFT </b>and <b>ALT</b> keys.

98
00:08:35 --> 00:08:38
Next, let’s learn to create a <b>leader line</b>.

99
00:08:39 --> 00:08:46
<b>Leader line</b> aid to move annotation to a more suitable position in the canvas.

100
00:08:47 --> 00:08:49
Choose the <b>Label tool</b>.

101
00:08:50 --> 00:08:54
Choose a corner on the <b>rectangle</b> and left click.

102
00:08:55 --> 00:09:00
Notice the blue pointer when the cursor is close to the corner.

103
00:09:01 --> 00:09:03
Draw a line to a side.

104
00:09:04 --> 00:09:08
Then drag the line to a side.

105
00:09:09 --> 00:09:13
Click once and drag again to the side as seen.

106
00:09:14 --> 00:09:17
Left click to accept the <b>leader</b> <b>line</b>.

107
00:09:18 --> 00:09:21
Notice the label text showing in the canvas.

108
00:09:22 --> 00:09:26
Sometimes the <b>Label</b> does not show on the canvas.

109
00:09:27 --> 00:09:33
If so, first select the label line and click on the <b>view</b> tab.

110
00:09:34 --> 00:09:38
Let’s change the size of the text on the canvas.

111
00:09:39 --> 00:09:43
Scroll down in the <b>View</b> tab and to <b>text properties</b>.

112
00:09:44 --> 00:09:50
Increase the text size to a higher value, to show the label.

113
00:09:51 --> 00:09:55
This value may be different for each of you.

114
00:09:56 --> 00:09:59
In <b>Combo view</b>, go to the <b>Data</b> tab.

115
00:10:00 --> 00:10:04
Click on the <b>Custom text</b> form in the <b>Label</b> section.

116
00:10:05 --> 00:10:08
Click on the <b>Ellipsis </b>seen on the right side.

117
00:10:09 --> 00:10:12
A <b>List</b> dialog box opens.

118
00:10:13 --> 00:10:15
I will type “<b>R 10</b>” and click on <b>OK</b>.

119
00:10:16 --> 00:10:20
Some of you may not see the label update.

120
00:10:21 --> 00:10:28
Though the form value is updated, symbol does not appear on the canvas.

121
00:10:29 --> 00:10:35
First click on the custom text form and then on the canvas to see the update.

122
00:10:36 --> 00:10:40
As needed save your work and exit <b>FreeCAD</b>.

123
00:10:41 --> 00:10:42
Now let's summarize.

124
00:10:43 --> 00:10:45
In this tutorial, we learned about

125
00:10:46 --> 00:10:49
Continue option when drawing line

126
00:10:50 --> 00:10:51
Split a line

127
00:10:52 --> 00:10:57
Use of snap tools when creating intersections in lines

128
00:10:58 --> 00:11:00
<b>Fillet</b> and <b>Chamfer</b>

129
00:11:01 --> 00:11:04
Measured <b>angular</b> dimension and

130
00:11:05 --> 00:11:08
Created leader line to add label

131
00:11:09 --> 00:11:12
For assignment activity, please do the following.

132
00:11:13 --> 00:11:16
Create a drawing as seen here.

133
00:11:17 --> 00:11:21
This video summarises the <b>Spoken Tutorial</b> Project .

134
00:11:22 --> 00:11:24
Please download and watch it.

135
00:11:25 --> 00:11:27
The <b>Spoken Tutorial Project </b>team,

136
00:11:28 --> 00:11:28
conducts workshops and

137
00:11:29 --> 00:11:31
gives certificates.

138
00:11:32 --> 00:11:37
Please write to us. Please post your timed queries in this forum.

139
00:11:38 --> 00:11:45
<b>Spoken Tutorial</b> Project was established by Ministry of Education <b>Government of India</b>.

140
00:11:46 --> 00:11:51
Thank you for joining.

