FreeCAD/C2/Modifications-and-Dimensioning/English-timed

Modifications-and-Dimensioning- English

Time	Narration
0:00	Welcome to the tutorial on Modifications and Dimensioning.
0:06	In this tutorial, we will learn to,
0:09	Create multiple lines
0:12	Split a line
0:14	Use snap tools when adding intersections of lines
0:19	Add fillet and add chamfer
0:23	Measure an angular dimension
0:27	Add a leader line
0:30	To record this tutorial, I am using Windows 11 OS and FreeCAD version 0.21.1.
0:42	To follow this tutorial,
0:43	Learners must be familiar with the FreeCAD interface.
0:48	For pre-requisite tutorials, please visit this site.
0:53	Open FreeCAD.
0:56	Click on Create New to start a new file.
01:00	Go to Draft workbench.
01:03	Make sure the orthographic and top view are selected.
01:08	Then select the line tool.
01:11	Notice the changes in the Combo view panel.
01:15	Check the box for the Continue option.
01:19	We can draw multiple discontinuous lines or continuous lines now.
01:26	We don’t have to select the line tool each time to draw a different line.
01:32	To demonstrate I will add a few lines.
01:36	Several line objects are added on the combo view as we add more lines.
01:45	To exit this mode, press the escape key.
01:49	Next, select one of the lines and select the split tool.
01:56	Place the cursor on the line and left click to split the line at that point.
02:03	Notice the 2 line objects in the combo view panel.
02:09	Next, let’s learn about snap tools in line drawings.
02:15	I will click on 8 of the snap tools as seen.
02:19	It is useful to keep them on as you progress in your drawing skills.
02:25	Next, let’s create a drawing to learn the options present in snap tools.
02:32	Choose the line tool and check the box for continue.
02:36	Let’s draw one horizontal line.
02:41	Check the snap end point tool and draw two lines.
02:46	For this feature to be visible, the snap ortho tool is in the on mode.
02:54	Then we know that the line is horizontal.
02:59	Move the cursor to draw a line.
03:03	Notice the blue color + symbol, with the + symbol of the cursor.
03:10	The blue + symbol appears only when the line is horizontal or vertical.
03:17	Move the cursor close to the end of the line.
03:21	Notice a White dot on the line and a blue guide.
03:26	Since the Continue option is on, we can continue to draw line.
03:31	Let’s add labels on the line.
03:35	Notice the snap end-point is on in the snap tools.
03:41	Click on the text tool.
03:44	Move the cursor near the point to where the annotation is desired.
03:50	Notice the White dot and left click.
03:54	A dialog box to type custom text appears on the left.
04:00	I will type A in this.
04:04	If you don’t see the label sign, go to the data tab and increase the font size.
04:13	Now pause the video.
04:15	Repeat this procedure to label the other end of the line with C.
04:22	Notice that the snap mid-point is on.
04:27	We can also label the mid-point of the line in the same way.
04:33	Pause video and label the mid-point as B.
04:39	Click on the line tool again and make sure the snap perpendicular is on.
04:46	Place the cursor on the canvas and move it towards the line.
04:52	When we see the blue ‘+’ sign, we know that the new line will be perpendicular.
04:59	Pause the video, and create a label called D, at this new line intersection.
05:08	Next let’s learn about snap intersection.
05:13	For this, we first have to turn off all other snap tools.
05:19	Move the cursor to near the intersection of the two lines.
05:25	The blue cross shows the intersection between the two lines.
05:30	Let’s create another line from the intersection point.
05:36	Left click and move the cursor.
05:39	Notice that line properties change in the left panel.
05:45	Type the angle to be 45 degrees and press the Enter key.
05:51	Notice the intersecting line at 45 degrees.
05:56	Pause the video and create two more labels of the remaining ends of the line.
06:05	I will label them E and F.
06:08	Let’s draw a rectangle next.
06:12	Edges and faces are often rounded off in engineering drawing.
06:18	This practice aid to reduce stress points and are called fillet or chamfer.
06:26	Rectangle is a closed loop single entity.
06:30	Hence, first downgrade the object to individual lines before fillet is applied.
06:38	Next, select two neighboring edges or lines.
06:43	Click on fillet.
06:44	Change the fillet value to 10 mm and press the Enter key.
06:50	Notice the sharp edge is now smoothened over.
06:55	Notice that both the original object and the fillet are present now.
07:01	Again, select two adjacent lines, and click on fillet.
07:06	Next, check the box for delete the original object.
07:12	Enter 12 for fillet and notice that only filet remains.
07:19	Next, pick another set of adjacent lines in the rectangle.
07:24	Then choose the fillet tool.
07:28	This time, check the box for both chamfer and delete original object.
07:34	Notice that Chamfer is more smooth and rounded around the corner than fillet.
07:42	Often we have to make angular measurements in the drawing.
07:47	Click on dimension.
07:50	Hold down Shift and Alt keys.
07:55	Notice the parameter changes in combo view.
08:00	Holding the keys down, select the two lines where the angle is to be measured.
08:07	We can measure the inside or outside dimension.
08:13	Move the cursor on the canvas between and outside the selected lines.
08:19	Notice the arc denoting the measurement also flips.
08:25	Left click once to measure the angle.
08:30	Only now, release the SHIFT and ALT keys.
08:35	Next, let’s learn to create a leader line.
08:39	Leader line aid to move annotation to a more suitable position in the canvas.
08:47	Choose the Label tool.
08:50	Choose a corner on the rectangle and left click.
08:55	Notice the blue pointer when the cursor is close to the corner.
09:01	Draw a line to a side.
09:04	Then drag the line to a side.
09:09	Click once and drag again to the side as seen.
09:14	Left click to accept the leader line.
09:18	Notice the label text showing in the canvas.
09:22	Sometimes the Label does not show on the canvas.
09:27	If so, first select the label line and click on the view tab.
09:34	Let’s change the size of the text on the canvas.
09:39	Scroll down in the View tab and to text properties.
09:44	Increase the text size to a higher value, to show the label.
09:51	This value may be different for each of you.
09:56	In Combo view, go to the Data tab.
10:00	Click on the Custom text form in the Label section.
10:05	Click on the Ellipsis seen on the right side.
10:09	A List dialog box opens.
10:13	I will type “R 10” and click on OK.
10:16	Some of you may not see the label update.
10:21	Though the form value is updated, symbol does not appear on the canvas.
10:29	First click on the custom text form and then on the canvas to see the update.
10:36	As needed save your work and exit FreeCAD.
10:41	Now let's summarize.
10:43	In this tutorial, we learned about
10:46	Continue option when drawing line
10:50	Split a line
10:52	Use of snap tools when creating intersections in lines
10:58	Fillet and Chamfer
11:01	Measured angular dimension and
11:05	Created leader line to add label
11:09	For assignment activity, please do the following.
11:13	Create a drawing as seen here.
11:17	This video summarises the Spoken Tutorial Project .
11:22	Please download and watch it.
11:25	The Spoken Tutorial Project team,
11:28	conducts workshops and
11:29	gives certificates.
11:32	Please write to us. Please post your timed queries in this forum.
11:38	Spoken Tutorial Project was established by Ministry of Education Government of India.
11:46	Thank you for joining.

Contributors and Content Editors

Madhurig