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Introduction to FreeCAD 1.0 Sketcher Workbench | FreeCAD Tutorial | 3D Modeling | Learn FreeCAD |
May 14, 2025
#freecad #freecadtutorial #learnFreeAD In this video I have explained FreeCAD 1.0 Sketcher Workbench. ▶️ Get my Complete FreeCAD Course : From Zero to Expert ! https://ko-fi.com/s/1ab4385434 ▶️ Join my channel membership and keep supporting my work: https://www.youtube.com/channel/UCcn6z2whMaFu-_LDsEXCfVA/join ▶️ Visit my website for more info on FreeCAD-: https://mechnexus.com/ ▶️ Download Source File of Tutorial-: https://mechnexus.com/mechnexus-youtube-tutorial-source-file/ ▶️ Buy Me a Coffee I am very grateful that you watch my videos and I am constantly trying to improve the quality of the videos on this channel. If you'd like to help me do this, please consider supporting me so that I can to continue to produce content for your enjoyment. 👉 Help support this channel by buying me a coffee: https://ko-fi.com/mechnexus
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0:00
hello friends welcome to free tutorial
0:02
and uh in this tutorial we will uh learn
0:06
the sketcher workbench it is an
0:10
introduction tutorial for a freead
0:12
sketcher workbench and we will learn how
0:15
we can utilize the frecad sketcher
0:18
workbench with a different workbench
0:21
like uh we can create an sketch with a
0:25
sketcher workbench and we can use it
0:28
with a part design workbench as well as
0:30
part
0:31
workbench so for this tutorial I'm uh
0:34
using the fread version 1.0 so you must
0:38
have a freecad version 1.0 or higher
0:41
version of a freecad for this
0:46
tutorial if you want to learn free from
0:49
the scratch then you can buy my complete
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CAD from a 02
4:35
expert use of a free CAD sketcher
4:38
workbench is to create a 2D sketches
4:42
that can be used with other workbenches
4:46
2d sketches are the starting point of
4:49
any CAD
4:50
models without the 2D sketch we cannot
4:53
create a 3D model
4:56
sketches typically define the profile
4:58
and path for the operations to create a
5:01
3D shape a model may be depend upon
5:04
several sketches for its final
5:07
shape here is a a simple example of a 2D
5:12
sketch created with a free sketcher
5:15
workbench and uh if we see here this uh
5:19
sketch is of a green color which means
5:22
that uh it does not have any degree of
5:25
freedom so once we create any sketch it
5:29
must be fully constrained and uh you can
5:33
see the constraint symbols here like we
5:37
see the equal symbol which means that
5:40
this line and this line is equal this
5:43
line is of a
5:44
vertical and here is a tangent
5:47
constraint which means that this line
5:49
and arc having the tangent relation now
5:55
we can also use the freecad sketcher
6:00
workbench with a part workbench the
6:03
sketcher for
6:04
the to create a constructive solid
6:08
geometry and to build the solid model
6:12
with a part design
6:14
workbench now if we see in freeat if we
6:20
activate our part design workbench we
6:23
get a sketcher workbench inside of a
6:27
part design workbench but if we expand
6:30
it we can see
6:32
the sketcher workbench is a different
6:36
workbench which is a integrated with a
6:39
part design workbench now let's switch
6:42
to the part workbench and here in the
6:45
part workbench we can also see the
6:49
sketcher workbench which means that uh
6:52
we can access frecad sketcher workbench
6:56
independent or we can use inside of a
7:01
part design and part workbench
7:04
now let's uh switch to the part design
7:08
workbench
7:09
and let's uh insert a body and on the
7:14
origin plane and now select the top
7:17
plane and let's activate this uh
7:20
sketcher
7:22
workbench so once you activate it you
7:25
can see that sketchers workbench tool is
7:28
active let's uh hide this origin plane
7:32
now we will understand this tools what
7:38
are these tools and how we can use
7:41
it so if you see the sketcher workbench
7:45
so here is a sketching tools like a
7:49
point poly
7:51
line and the arc we can see the multiple
7:56
arc options we can see the multiple
8:00
options to create a circle here we can
8:03
see the multiple options to create a
8:05
rectangle and here we can see the
8:08
multiple options to create the pentagon
8:13
hexagon square triangle etc and here is
8:16
a two options to create a slot and here
8:21
is a spy lines curves to create it and
8:25
uh this is the to toggle the geometry
8:29
like a continuous or a reference so
8:32
these are the draw tool and these are
8:34
the constraint tools sketcher workbench
8:38
features constraint allowing 2D shapes
8:41
to follow the precise geometrical
8:43
definition in the terms of length angle
8:49
etc a constraint solver calculate the
8:52
constraint ex extent of a 2D geometry
8:54
and allow the interactive exploration of
8:57
a degree of a freedom now let's uh
9:01
understand the what is the degree of a
9:04
freedom so to understand this let's
9:08
uh create one uh rectangle here and now
9:13
you can see that uh free automatically
9:17
applies this vertical horizontal
9:19
constraint and now if we try to move it
9:22
we can move it which means that uh it
9:25
have the degree of freedom and we have
9:29
to make degree of freedom zero
9:34
now let's uh constrain
9:37
this rectangle and uh we will see how
9:42
this degree of freedoms works so our uh
9:47
sketch is white select this smart
9:50
dimension
9:51
option to give the horizontal dimensions
9:55
so let's make it 50 and uh make this
9:59
vertical also 50
10:03
and now we will uh move it so
10:07
here we will uh define this point from
10:10
the
10:14
origin so now we see that uh under
10:17
constraint two dos now click on it so
10:21
you will see the points so if we
10:25
constrain this point from the origin or
10:27
this one our degree of freedom will be
10:31
zero and our sketch is fully constrained
10:34
now here DOF is showing two but if I
10:37
delete this dimension so DOF is a three
10:41
now if I delete this one DOF is a
10:45
four and let's also delete this
10:48
horizontal constraint so DOF is five so
10:51
you can see that uh if I am deleting the
10:55
relative constraint my DOF is increasing
10:58
so here is a eight DFS now let's reduce
11:02
this to the zero and once we apply the
11:05
constraint we will see it reducing so
11:09
first let's apply the horizontal
11:11
constraint apply this horizontal apply
11:16
this
11:18
vertical apply this vertical so here if
11:22
we expand it we can see the separate
11:25
horizontal and vertical constraint if
11:28
you select these options free solver
11:31
automatically detect whether line is a
11:34
horizontal or vertical so you can see
11:37
that we have applied the four
11:39
constraints so now you can see that uh
11:42
our degree of freedom reduced to four it
11:46
was eight we have applied the four
11:49
constraint now let's apply the
11:53
dimensions
11:56
so this is the 50 so it is now become
11:59
three let's apply the vertical
12:01
dimensions now it is two and select
12:05
smart
12:07
dimension and select this point and make
12:11
it 20 so now it is one so now if we
12:15
apply the vertical
12:20
dimensions and uh let's make it uh 20 so
12:24
you can see that uh fully constrained
12:27
and our DOF is a zero since it is zero
12:31
therefore it is not showing and you can
12:33
see that our case constraint color is a
12:37
change to green which means that it is a
12:40
fully
12:41
constrained so this is how constraint
12:44
and degree of freedom
12:47
works now here we have a created sketch
12:51
now if we close it and uh we will uh
12:54
create a simple pad so you can see that
12:58
uh sketch is inside of it and if we on
13:02
our sketch we can see the sketch here
13:05
but we will not see the constraint if
13:08
you wanted to see the constraint of a
13:09
sketch then select the sketch and edit
13:12
it so this constraint will not be
13:16
visible once you created the solid but
13:19
uh you can on and off the sketch by
13:22
pressing the spacear key from your
13:26
keyboard now let's delete this pad
13:31
so if you wanted to create a 2D sketch
13:34
and you do not want to create a solid
13:37
then instead of this sketcher workbench
13:40
use the draft workbench which is very
13:44
useful workbench for creating the 2D
13:47
sketches and you can export those
13:49
sketches into the DXF file and you can
13:54
modify that sketch in a softares like uh
13:58
AutoCAD draft site QCAD
14:01
etc now let's edit the sketch and uh see
14:07
some more option inside the sketcher
14:10
workbench so here under the smart
14:13
dimension you will see the different
14:15
type of dimensional tools like uh
14:19
horizontal vertical align dimensions
14:22
constraint radius constraint
14:25
diameter so let's create one circle here
14:30
and here I will select a smart dimension
14:34
so it will automatically detect that it
14:36
is a circle but you can specific select
14:40
a diameter constraint and you can
14:43
specify the diameter so now once we give
14:48
the dimension we will see here some
14:50
options like uh this is the diameter and
14:53
here is a value and let's make it 100 mm
14:56
name is optional you can give some name
15:00
to your dimensions to link the dimension
15:03
we will see
15:05
these
15:07
options in a upcoming lectures how we
15:10
can use it to the link the dimension and
15:13
here is a reference dimensions reference
15:16
dimension are extra dimension which we
15:19
can give to our uh
15:22
drawing let's say okay so if you if you
15:27
wanted to make this dimension as a
15:30
reference
15:31
then see one example for example here I
15:35
have a given the diameter 100 and uh
15:38
let's select the smart dimension and uh
15:43
constrain this circle to the 200
15:46
distance and uh let's provide the
15:49
vertical dimensions and make it a 100 mm
15:54
now here I wanted to give the radius as
15:58
a reference dimension so let's select a
16:01
smart dimension and from here select
16:03
constraint
16:04
radius so here you can see that uh this
16:08
constraint is a redundant constraints
16:11
which means that uh this is an extra
16:14
dimensions which uh free not allowing me
16:18
to do that
16:20
so here I will click on the reference
16:23
and say okay so you can see that uh
16:27
reference dimension is created this is
16:30
an extra dimensions now for this circle
16:34
I wanted to give the radius and uh I
16:38
wanted to make this 100 diameter as a
16:41
reference so what I will do I
16:44
will edit this dimension at make it a
16:48
reference now here if you see this both
16:52
dimension are a reference then we have
16:55
the one degree of a freedom now here I
16:58
will make this reference dimension as a
17:01
default dimension and say okay and
17:04
degree of freedom is removed so this is
17:06
basically an extra dimension some
17:09
people's prefer the radius some people
17:13
refer prefer the diameter so that is an
17:16
optional dimension you can give now
17:20
let's understand the dimensional part so
17:24
let's consider this 200 dimension to
17:27
edit the dimension all we have to
17:29
doubleclick on this 200 and change the
17:32
value let's make it is a 210 and now
17:37
this dimension is also recorded in a
17:41
solver message here
17:44
so let's select the 210 dimension and
17:48
scroll down so you can see that
17:51
uh this is the horizontal dimensions and
17:55
it's having the number constraint 14 and
17:59
here is a value 210 we can also edit the
18:03
dimension by clicking on here
18:07
so we can directly edit from here by
18:10
double clicking or we can also click on
18:14
here now let's uh click on this circle
18:19
so here under the elements sections you
18:23
can see that uh this circle is got
18:26
highlighted if you uncheck it it will be
18:30
get hidden for example this tool is very
18:33
helpful if you are creating very complex
18:36
sketch and you want to hide something
18:38
for temporary basis so this way we can
18:42
hide it for example let's hide this uh
18:46
square as well press control key select
18:48
all so once you select here everything
18:51
is going to be select here in a browser
18:54
as well we can see that say that this is
18:57
a overall property of our sketch now if
19:01
we uncheck it this will be also
19:06
hidden if you wanted to on it just check
19:10
it you can on it so this is how we can
19:14
hide the constraint and we can hide the
19:17
element as
19:19
well now let's learn how we can validate
19:23
our sketch so for example I will delete
19:27
this circle and I will close it
19:30
now if I select my sketch and uh go to
19:34
the validate sketch
19:37
option and click on the highlight
19:40
troubleshoot vertexes so you can see
19:43
that it is highlighting because nothing
19:46
is open now we will make one error in
19:50
our uh sketch we will
19:54
uh we will delete this line and uh we
19:59
will uh draw one
20:02
line
20:04
and from this point to this
20:09
point let's provide the gap
20:15
0.001 okay and
20:21
uh select the dimensions and same
20:25
provide here
20:30
0.001 now our sketch is fully
20:33
constrained and uh let's come out of
20:38
it and let's try to extrude it select
20:42
the sketch and click on the pad so we
20:45
cannot pad it because our sketch is not
20:49
valid and
20:51
from top view if you see the
20:55
sketch we cannot find that it has a open
20:59
loop because we have created
21:03
very small gap
21:05
here so identifying such type of open
21:09
loops is very difficult but do not worry
21:13
free having tool to detect it so we have
21:17
the open area at this position so we
21:19
will select our sketch and click on the
21:22
validate options and click on the
21:25
highlight troublesome vertexes so you
21:28
can see that uh free CAD is highlighting
21:30
here one points which means that it is
21:34
the problematic
21:36
area so now let's close it we have
21:40
identified the
21:42
problems and now let's select it and
21:46
delete it select and delete it and now
21:49
let's uh zoom it select this and this
21:54
and add a coincidence constraint now
21:57
close
21:58
it now we will again validate it now we
22:02
will not see any problem and if we try
22:05
to create a pad we can successfully
22:09
create a pad so this is how when you
22:12
create a sketch in freead you must
22:15
validate it do not proceed further for
22:19
the pad revolve or other solid
22:23
features because if you not validate it
22:26
you will not be able to find the problem
22:29
in your sketch so keep this standard
22:32
practice create a sketch validate it and
22:35
then go for the solid modeling features
22:38
like a pad revolve groove
22:41
etc now learn some more techniques to
22:46
create a sketch
22:48
so let's create a circle now here we can
22:52
create a circle and uh then we can
22:56
provide a dimensions like I have created
22:58
a circle and now I will provide uh 100
23:02
mm to save the times you can directly
23:06
enter this value let's delete this
23:08
circle create a circle and now if you
23:12
see that uh as I am increasing or
23:16
decreasing my mouse positions my
23:19
diameter value is changing now here I
23:22
can directly put 100 mm and press enter
23:26
so you can see that uh rather than
23:29
creating a circle and then providing the
23:32
di dimension of diameter 100 I have just
23:36
entered that value while creating the
23:38
sketch so once you become the pro user
23:41
then uh you can utilize these tools and
23:45
uh it will be much easier to create a
23:48
sketch and save your time but for a time
23:50
being as a beginner user you follow the
23:54
normal method just create a profile and
23:57
then constrain it with a dimensions like
24:00
a horizontal vertical dimensions and
24:02
this works with the line as well if I
24:05
wanted to draw the line of 100 mm then
24:08
you can see that as I am moving the line
24:11
my length of a line is changing so if I
24:14
wanted to create a line of 100 mm then I
24:18
can directly provide the 100 mm and here
24:23
press the angle zero because I want it
24:26
horizontal so you can see that uh it is
24:30
created or in a simple way you can
24:34
create a line of any length and then you
24:37
can uh fix it with the dimensions so
24:42
both the methods are okay and it depends
24:45
uh for which method you are more
24:47
comfortable those who who have used the
24:50
tools like AutoCAD they are very
24:53
comfortable with entering the
24:55
values while creating any profile either
24:58
line arc circle rectangle and uh it also
25:02
works for the rectangle as well so let's
25:05
uh I want horizontal distance of 100
25:09
press the tap key so that uh it will
25:12
switch to the vertical dimension and 50
25:15
so here I wanted to create a rectangle
25:17
of 100 by 50 and I have enter the value
25:20
and say okay so you can see that uh this
25:24
angle is
25:26
created this dimension is created and
25:30
also constraint has been applied
25:34
so this is the all about the basic
25:36
overview of the constraint tools and
25:41
uh profile creations tools like a line
25:44
arc circles so this is the fundamentals
25:48
tools of a free sketcher workbench and
25:52
we have also learned the doofs we have
25:55
learned the constraint and elements and
25:58
in upcoming lectures we will create a
26:01
profile and uh we will
26:04
uh see some advanced tools in a free cat
26:08
like uh symmetricity tangency
26:11
perpendicularity parallelity
26:13
constraining and the some profile
26:16
example with a
26:19
uh reference geometry trim
26:22
extend so this is the introductions to
26:26
the free CAD sketcher workbench what it
26:29
is and how we can utilize it with a
26:33
different workbenches like a part design
26:35
and part workbench and at the same times
26:39
the fundamental concept of a free
26:42
sketcher workbench is a degree of
26:45
freedoms
26:46
and this validate sketch options so if
26:51
you create a sketch by considering this
26:53
doofs and uh no any open loops so you
26:58
will not face any problem while uh
27:01
creating the 2D into the 3D so this is
27:06
all about this tutorial thank you for
27:08
watching and thank you for your valuable
27:14
time
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heat heat heat
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and now we will come back to our
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tutorial
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