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Create Different Type of Arc in FreeCAD 1.0 Sketcher Workbench | FreeCAD Tutorial | Mechnexus |
May 16, 2025
#freecad #freecadtutorial #learnFreeAD In this video I have explained How to Create Different Type of Arc in 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
View Video Transcript
0:05
hello friends welcome to fre tutorial
0:07
and in this tutorial we will learn how
0:09
we can create a different type of arc in
0:12
a frecad sketcher workbench so for this
0:15
tutorial I'm using the frecad version
0:18
1.0 so you must have at least 1.0 or
0:22
higher version of a freecad
0:25
so first I will create a new file and
0:28
then I will insert a body and on the
0:31
origin plane and select the front plane
0:35
and uh create a sketch and now let's uh
0:39
hide the origin plane by pressing the
0:41
space bar in Frecad we can create a
0:45
different type of arc as you can see
0:47
here we can create a arc by center
0:50
create arc by three point and uh ellipse
0:54
hyperola and parabola are the special
0:56
type of arc so you can also see the
1:00
keyboard shortcut for the each arc you
1:03
can maintain this keyboard shortcut in
1:06
an Excel file for each and every tool if
1:09
you hover your mouse to the tool you
1:12
will see the keyboard shortcut like
1:14
coincidence constraint three and if you
1:17
expand this horizontal edge
1:20
V so now let's uh go one by one so first
1:24
we will
1:26
create arc by center so here I will
1:30
click on this tool so this is the arc by
1:33
center so first we have to select the
1:35
center so center could be anywhere so
1:38
where you will click your mouse on
1:42
the screen of your free cat it will be
1:45
considered as a center so let's take a
1:48
center of our origin so once you click
1:51
on it you will uh get here the angle and
1:57
uh this diameter so here I will
2:01
uh select my first point let's I click
2:04
my first point here and I will give the
2:07
angle here so for example I want angle
2:11
uh 45° so I can directly enter it so you
2:15
can see that arc by center is created so
2:19
here if we draw the
2:22
line so this point is passing through
2:25
this
2:28
center so this is a imaginary line and
2:32
uh make it construction and now let's
2:35
make it a
2:36
horizontal so here arc by center is
2:40
created and uh we can uh specify the
2:45
radius dimension for this arc let's make
2:48
uh
2:50
250 so here you can see that
2:53
uh arc by center is
2:56
created even though this construction
2:59
geometry is just for reference one now
3:02
we will create our second arc which is
3:05
uh create arc by three point click on it
3:08
and now here I will select the three
3:10
point first point second point and here
3:15
third point I can take on the top side
3:19
or I can take it on the bottom side so I
3:22
will take it on the top
3:24
side and now to make it a
3:29
concentric let's uh merge it with the
3:32
origin provide the coincidence
3:33
constraint and here is our arc is
3:36
created and we will
3:38
simply select the radius dimension and
3:42
let's constrain it let's make it a 150
3:48
now here if you see when we create a arc
3:52
by three point so it is not a constraint
3:55
so we will make it a constraint if I
3:58
want the half
4:00
circle so this is how we have created
4:03
the points we have a created first point
4:06
here second point here and third point
4:08
we have click here on the upper side you
4:12
can click on the lower side you can take
4:14
this axis you can take first point here
4:17
second point here third point on this
4:19
side or similarly first point here
4:22
second point here and third point here
4:24
so I use a threepoint arc a lot apart
4:29
from this uh arc by
4:32
center because it's uh provide you the
4:35
ability to select a point if I wanted to
4:39
draw the smaller arc then I will select
4:43
the point closer if I wanted to draw the
4:47
bigger arc then I I can select the arc
4:50
size i will take this bottom right so
4:55
this is very convenient to create an arc
4:57
by three points now let's uh move to the
5:02
other type of a creation of arc for arc
5:06
of ellipse
5:08
so ellipse is a type of arc but it has a
5:12
control points which we will see when we
5:15
create it so let's expand it and uh
5:18
create arc of ellipse so here I will
5:23
select one point
5:24
here second point here
5:29
and I will uh create my arc like uh
5:34
where I will drop this my point it will
5:37
be get created so let's I wanted to drop
5:40
my point here so now here you can see
5:43
that we have a four control points 1 2 3
5:49
and four so to control it we have to
5:53
define this
5:55
length so select uh horizontal dimension
6:00
select this line and uh let's provide it
6:02
a 200 mm vertical I wanted to control it
6:05
so I will select this point and this
6:08
point so here specific I will select the
6:11
vertical dimension select this and this
6:16
let's provide a 400
6:19
mm so this is how
6:22
ellipse is a special type of arc and you
6:25
can create it now I wanted to remove it
6:29
so I can simply make it a coincidence
6:32
with it or I can trim it so let's make a
6:35
coincidence let's make
6:37
a coincidence and here we can see that
6:41
relation is not applied horizontal and
6:43
vertical so I will make it horizontal i
6:47
will select it and I will make it
6:49
vertical
6:51
now still it is not fully constrained so
6:56
we will select it and uh add a
6:59
coincidence relation and I will also
7:02
select this and this and add a
7:04
coincidence relation so let's see there
7:06
is some conflict so we will press Ctrl Z
7:10
and extend it here
7:13
now let's try the trim
7:15
tool so trim tool is working and now
7:19
let's close this profile select the line
7:23
tool and
7:26
uh join it so ellipse is useful when you
7:30
are creating any surface body and let's
7:32
come out of the sketch so you can see
7:35
that uh this profile is created we can
7:38
simply pad it
7:42
so this is a sketcher tutorial so we
7:44
will not go about the solid modeling
7:47
tool so this is how we can create a
7:49
ellipse now let's move to the next
7:53
tool our next tool is to create a
7:57
hyperola so I will again on the origin
8:01
plane and uh press zero for isometric
8:05
zoom it and we will again select the
8:07
front plane and click on the sketch
8:11
now let's uh of the origin
8:14
plane and now we will create a hyperola
8:17
so here we will select create arc of a
8:21
hyperola so here we require four control
8:25
points in hyperola so first point I will
8:27
select here second point I will select
8:30
on
8:31
origin and here you can see that
8:34
imaginary hyperola is showing so I will
8:37
click my third point here
8:40
and I will click my fourth point here so
8:44
you can see that hyperola is created and
8:47
now let's uh apply the relevant
8:49
horizontal and vertical constraint so
8:52
make it
8:53
horizontal select it and make it
8:56
vertical and now I will select this
8:59
point and this point and add a
9:03
vertical and
9:07
now if you wanted to control the
9:10
position then we have to fix these two
9:12
points let's uh select
9:17
it and let's make it 100
9:20
mm and let's select this
9:26
point let's first uh see what happened
9:30
so you can see that uh this point and
9:34
this point is a control point so we will
9:36
also constrain
9:38
it and let's make it a
9:41
200 and
9:43
now these two points we will connect
9:46
with the
9:50
line and let's see let's provide the
9:54
dimension
9:58
let's make uh 100 mm so you can see that
10:02
uh control points are different in
10:05
hyperola and this is how you can uh
10:08
create a sketch of a hyperola and uh you
10:12
can uh create a
10:15
pad this uh parabola hyperola and
10:18
ellipse are used in surface
10:20
modeling now let's uh move to the next
10:24
tool now our next tool is to create a
10:27
parabola so here I will on the again
10:30
origin plane and uh select this front
10:34
plane and click on the
10:36
sketch now we will create the arc of a
10:39
parabola so here I will select the
10:43
create arc of a parabola options and now
10:46
here I will select my first point here
10:49
second point on origin and you can see
10:52
that uh imaginary parabola is showing so
10:56
third point I will select this and I
11:00
will create the
11:03
parabola so now this is control with the
11:07
first point and second point so let's uh
11:10
add a
11:11
dimension select this and this and let's
11:13
uh add a 50 mm and uh same way we can uh
11:19
connect this and this and add it uh
11:24
horizontal and now let's see what is the
11:28
constraint so let's provide the vertical
11:30
dimension select a smart dimension
11:33
select this and this and let's provide a
11:36
30 mm and let's come out of the
11:43
sketch so this is how we have created
11:48
the different type of arc in a frecad
11:51
sketcher workbench arc by center arc by
11:54
three point arc of ellipse I arc of a
11:56
hyperola and arc of a parabola so this
12:01
is all about this tutorial thank you for
12:04
watching and thank you for your valuable
12:06
time