Autocad 3D practice drawing : SourceCAD

>> In this video,
I will create a 3D

practice drawing
of a mechanical

component in AutoCAD.

So let's start with

3D modeling workspace and

make sure you're in 3D
modeling workspace.

Right now, you
can see that

I am in 3D modeling.

If you're not,
then click on this

dropdown and change
it to 3D modeling.

You can also
switch this to

3D modeling workspace
from this gear icon.

So click on this gear
and change it to

3D modeling if you're not

in 3D modeling workspace.

Once you have reached
this workspace,

start your drawing by
creating a circle.

So let's go to
this Draw panel

and click on circle.

Click at any point in
your drawing area and

create a circle with

diameter equal
to 36 units.

So press D for diameter
and 36 and Enter.

So here we have
this circle.

So depending upon the
scale of your drawing,

you may find
that this circle

appear very large
or very small,

so we'll just make
some adjustments.

So double-click your
scroll button or

the middle mouse
button and

your drawing will
fit into screen.

Zoom out, and if

you're not able to
zoom out further,

then type REA on
command line,

which stands
for regenerate

all, and press Enter.

So now you'll be able to

freely zoom in
and zoom out.

So now we have done this.

Let's make another circle.

So go to circle again

and make a circle with
diameter of 70 units.

So type D,

Enter, and 70.

So here we have
another circle

with diameter of 70 units.

Now go to circle
again and this time,

I'll create a circle
with radius 45 unit.

So click at the
same center and

enter 45 as the radius.

So here we have this
third circle as well.

Now go to line command,

click at the center
of this line,

and track it upwards.

You'll see that a
green tracking vector

appear if you
track it upwards.

And if this tracking
vector is not visible,

then click on this
Object Snap Tracking

and turn it on.

Once you have turned
it on, you'll see

that this green tracking
vector will appear.

Now, type 65

on command line
and press Enter.

So this will create
a reference line

of length 65 units.

Now we'll create
some circles

on this endpoint as well.

So go to circle again,

click at this endpoint,

and now make a circle with

diameter 18 units or
radius nine units.

So I'll type nine
and press Enter.

Again, go to
circle command.

So for that, I just
need to press Enter.

It will repeat
the last command.

So make another circle

with radius of 24 units.

So here we have
another circle

with radius 24 unit,

and we also need to
make one more circle

with diameter 36 unit
or radius 18 units.

So go to circle with
the same center,

make a circle with radius

18 unit and press Enter.

So here we have
these three circles.

Now we need to

make some adjustments
to this drawing,

but before we
make adjustments,

we need to make one
more reference line.

For making one more
reference line,

select this line command,

click at this point, and

now drag your cursor
towards left.

Again, you'll
again observe

this green
tracking vector.

Now enter a length
of 72 units,

so 72 and press Enter.

So here we have another
reference line.

Now go to line
command again,

click at this endpoint.

Now track it upwards

and enter a length
of 37.5 units.

So 37.5 and press Enter.

Again, go to line command,

click at this point.

And now we need to touch
this line exactly at

the tangent point
of this circle

which is completely
outside.

For that, press and hold

Shift key and
then right-click.

You'll see that

this contextual
menu will appear.

From this menu, select

Tangent and

now move your cursor
to this circle.

You'll see that
it will snap

exactly at the
tangent point now.

So click here and

press Enter to
exit this command.

Again, press
Enter to start

line command and now
go to this center,

but don't click and now

track it towards
right side.

You'll see an
intersection point

at the intersection of

this circle and this
tracking vector.

Click at this point on
the outermost circle

and now drag

it downwards so that it

directly intersects
another circle as well.

So here we have
this next point.

If you're not able to

see that
intersection point,

then make sure
that you have

turned on OSNAP,

and in OSNAP,

intersection is turned on.

Now, let's trim some
of these lines.

But before trimming, I'll

create one more
reference line

that starts from
this point and

extends beyond
the last circle.

Select trim command
now and press Enter.

Now, carefully
remove the lines,

arcs, and circle
which I am removing.

So click at this one,

this one, and this one.

So these are the lines
which we don't want,

and also we don't want

any geometry which
is under this line.

Now, press Enter to exit

this command and erase

these two arcs as well.

So here we have a
completely clean geometry.

Now we have made
this geometry.

All we need to do is

remove these helping lines

which we no longer need.

So let's select
this helping line

and this also remove it.

We also don't need
this line, remove it.

Now, we'll make a mirror

image of this drawing.

For that, select mirror

command from Modify panel,

so expand it,
select mirror,

and now select complete

geometry and press Enter.

Now, click at this
first point and

then this endpoint
and press Enter.

So here we have
a mirror image.

Now we need to join
it because it is

behaving as if these are

two different
kind of objects.

For joining them, select

all these geometries,

type J on command line,

which is for join,
and press Enter.

Now, you'll observe
that this is

a completely
single unit and

all these objects are now

joined with each other.

So now let's convert
this geometry into 3D.

For converting, you
need to move to

3D workspace and in
3D view as well.

So click on
this home icon.

This will take you to

the 3D view of
this geometry,

which includes
z-axis as well,

which was not
initially visible.

Now, select presspull

command from
modeling panel,

and now bring your
cursor inside this area.

So click inside this area,

not on the outline
of any geometry

and enter a height
of 14 units.

So type 14 and
press Enter.

So here we have it.

Now, carefully,

click inside these
two circles,

not on any of
these geometries,

and now enter a
height of 119 units.

So 119 and press Enter.
So here we have it.

Now, again, zoom this area

and click inside

these two
concentric circles.

And now you need to enter
height of 19 units.

So type 19, press Enter.

Repeat it for this
concentric circle as well.

So move here, click here,

and now enter
a height of 19

units and press Enter.

Press Enter again to
exit this command.

So now we have made
many geometries

and we have converted

the initial geometry or

the base geometry into 3D,

but it's not
properly visible.

To make it
properly visible,

click on this visual
style control

and change it
to shaded view.

So once you do this,
you'll see that

your visual style is
now clearly visible.

Let's turn this
grid off also.

And now let's orbit it.

Let's see what
we have made.

So we have made this
much of our drawing.

Now let's make another
part of this drawing.

For that, first, we need
to move our cursor.

So click on this origin

on Coordinates panel,

and now move your
cursor to this point,

carefully move it
to this point,

and now click on this
front hotspot of

ViewCube so

that this front portion
is visible to you.

Now you can see
that z-x plane

is visible parallel
to your eyes.

We need to change
that. We need

to change it to x-y view.

So for that, click on

this dropdown menu for

view and change
it to view.

Now you'll see that x-y is

now visible and we can
make our own geometry.

Now let's start with
rectangle command

and click at
this endpoint.

So now here starts
our rectangle.

Now we need to make
a rectangle so that

its length is 56 units,

and height is 36 unit.

So for that, I'll enter

at -56 because we want to

make our rectangle
towards left

of this coordinate,

comma height 36 because
we want to make

it upwards, and
press Enter.

So here we have
this rectangle

with length 56
and height 36.

Now we need to make
some other geometries.

For that, select circle,

click at this midpoint,

and click at
this endpoint.

Go to circle again,

click at this
center point and

now make a circle with
radius 14 units here,

so 14 and press Enter.

Now go to trim command,

press Enter, and
trim these lines.

So we are not able
to trim these

lines as you can
directly see.

So we have another
solution for this as well.

We can break it

if we are not
able to trim it.

For that, let's expand

this Modify panel
and go to break.

Now, select the circle

and select the
first point,

but before that, click on

first point on
command line.

Make sure that you click
on this first point.

Now here is our first
point and now drag it

in anticlockwise
direction and

click on the second point.

Now go to break command
again, select break.

And again, select
this rectangle

and select this
first point.

Click at this
first point and

then this second point,
and here we have it.

Now our complete
geometry is ready.

All we need to do is
join these two parts.

So select these
two geometries,

type J, and command
line, and press Enter.

And here we have a
completely single segment.

Now, click on this
home icon again.

And if you see

that the background
has changed,

then right click on

this ViewCube and
change it to parallel.

So in that, you'll
be able to see

a parallel view
of your drawing.

Now, we need to

again make some
changes to this.

For that, go to

presspull and click inside

this geometry as you
have done previously.

And now we need to drag it

in this direction
up to 75 units,

so type -75,

because positive z is

pointing in
opposite direction,

so for that, you
need to enter

-75 and press Enter.

So here we have it.

Now we need to add more

details to this drawing.

So let's orbit
this drawing

and move our origin.

So click on this origin

and move it to
this center point.

So keep holding Shift,

then right-click,
center will appear.

Now move your cursor and

click when this center
mark is visible.

So you can zoom in also if

this center mark is
not properly visible.

So now I can see
this center.

So click here, and now

this will be placed
exactly at the center.

So now, once it is
placed on the center,

click on this hotspot,
which is front,

and now you'll see
that currently we

have z-x plane as
the parallel plane,

which we don't want, so

again, we need to
change the plane.

So click at this

dropdown and
change it to view.

Here we have it. So now

the current plane
is x-y plane.

Now let's make some
changes again.

So go to this origin,

and again, we need to move

this origin this
time downwards.

Take it all the way
down up to this point

and enter a depth or
value of 30 units,

so 30 and press Enter.

Now here we have it at

exactly the point
where we want it.

Now, click at this
hotspot and on back.

We need to move it
outwards as well.

So for moving it out,

again, we need to
select this origin,

and now you can
see that it's

only moving in these
two direction,

but we actually need to

move it in z-direction.

For that, click
on this home,

and now you'll
be able to move

it in z-direction as well,

but make sure that

z-direction is
visible for you.

So here we have it.

Now this green tracking
vector is visible.

Now enter a distance
of 65 units,

so 65 and press Enter.

So this part is
very important.

You need to move your UCS

exactly at the position
where it should be.

Once you have moved it to

the exactly
proper location,

then go to this
top hotspot,

and rotate your
UCS if required.

Rotate your view
and change it

to parallel by
right-clicking on it.

So here we have our UCS

as X-y coordinate plane.

Now go to circle and

enter 0,0 on command
line and press Enter.

So this will make a circle

exactly at the center of

our new coordinate
and enter

a circle with
radius 12.5 units.

Press Enter
again to repeat

circle command and
enter 0,0 as origin.

And this time,

enter a circle with
radius of 24 units.

So here we have
both these circles.

Now, go to this
home icon and

you'll observe
that these are

the circles which
we have made,

which was not
visible initially,

but now you can clearly

see these two circles.

Now we need to

make a geometry
from these circles.

Click on parallel,
go to presspull,

click inside this
concentric circle,

but make sure that
it is selected.

So go to these two circles

and then click inside.

So now I can select it.

So go to this top view,

and in this way,

you'll be able to see
where this is going.

So all you need to ensure

that this gets
inside this part,

but it should not
come out from this.

So let's click at
somewhere here.

So here we have it.

So this is more or less

like approximation
for this part.

So now we have made
this geometry as well.

So what we need
to do is make

a union because this

acts as if these two
are different objects.

So now we need to combine
these two objects.

For that, go to union,

select this,
and then select

this geometry
and press Enter.

Now this will act
as a single object.

In case you want

to intersect this area

from this
completed drawing

that also you can do.

So for that, go to

Extrude and click on

the circle which
is inside,

BUT before doing that,

make sure Selection
Cycling is turned on.

You can turn on
Selection Cycling if it

is not visible
from this menu.

And here we have
Selection Cycling.

So make it visible and

then click it
to turn it on.

Now click at this point.

You'll see that
this menu will

appear when Selection
Cycling is turned on.

Select circle and
now press Enter.

So a circle will be made.

All you need to
do is get inside

this and make sure

that the circle touches
this center point.

Now we need to subtract

this circle from the
complete geometry.

So select Subtract,

select this
outside geometry,

press Enter,
and then select

the circle which we have

made and press
Enter again.

And you'll
notice that it's

now intersected
from the geometry.

So we have done this.

Now, one final detail
that we need to add in

this geometry is wedge
shape over here.

So for creating
that wedge shape,

we need to move UCS.

For that, click
on this origin

again and this time,

move your cursor to
this center point,

and click on this left.

You can rotate this
view if you want.

And again, click on

this view and
change it to view.

Here we have this x-y.

Make sure that you

always make your drawing
in x-y plane because

a drawing cannot
be made in

any other plane
in AutoCAD.

So now we have reached
this x-y plane.

Let's start making
our geometry.

So I'll start with
a line command

and select this
center point.

Now, make a line,

so drag your
cursor towards

this left side of

your geometry and enter
a length of 35 units.

So 35 and press Enter.

So we have made a
line now press Enter.

Over this drawing, you'll

see that a line
has been made.

Now we need to

move this already-made
geometry.

So we have made
this polyline.

So select this polyline,

and now we need
to move it.

So here we have it.

When you select
this polyline,

you'll see that this
gizmo will appear.

Now, click on
this green gizmo.

If you are not able
to see this gizmo,

then go to this Move Gizmo

and select Move
Gizmo before

selecting the object
and you'll be

able to observe
this gizmo.

Now, once this
gizmo is selected,

drag it towards
the side and enter

a length of 37.5 units.

So here we have it,
37.5 and press enter.

Now, this will
move it exactly to

the center of this

geometry which
we have made.

Now go to top view,

rotate it towards
90 degrees,

select this line
command again,

click on this endpoint,

and we need to make a line

which is tangent
to that geometry.

So again, press
Shift and hold it.

Then right-click, select

tangent, and move to this.

And here we have a
tangent geometry now.

Now we need to make
remaining geometries.

For that, again, I'll
select line command,

go to this point
and now drag

it downwards and
enter a length

of 105 units
and now drag it

towards left and
enter a length

of 37 units and
press Enter.

So here we have it,
which is exactly

at the point which we want

and now press Enter.

The results may not

be visible to
you right now,

but we need to orbit
this geometry,

and now we need
to hide some

parts of this geometry in

order to see the
result which we

have created.

So select geometry,

this geometry, and
this geometry.

Now, right-click,
select Isolate,

and select Hide objects.

Now, all these
objects are now

hidden from our view,

and now you can see

all the 2D geometries
which we have created.

If you want, you can hide

these two
geometries as well.

Select these
two geometries.

Now isolate and
hide objects.

So all the geometries
are now hidden.

You can directly remove
these geometries.

We don't need
them anymore.

And you can remove

this internal
circle, as well.

And this is the
geometry which

we want to take care of.

So here we don't

want this line,
so remove it.

Now go to break and
select this object.

Select first point and

select this as
the first point,

which is the
intersection of

this line and
this segment.

And now as second point,
select this point.

So here we have our
geometry which we need.

So again, select

all this geometry
and click on join,

or you can
directly type J on

command line and
then join this.

So here we have this
as a single polyline.

Now, click on this icon of

unisolate objects
and click

on "End Object Isolation".

So this would bring

all the objects
in clear view.

So here we have
this geometry.

All we need to do is add

a final detail for
that. Select Extrude.

Select this line,
press Enter,

and enter thickness
of -6 unit

because positive z is
pointing towards you

and we want to make it
in the negative side.

So press Enter now.

Go to presspull,

select this phase, and

enter at length of six
units. Press Enter.

So now we have made
this geometry with

a thickness of 12 units.

So here we have our
a final geometry

of 3D mechanical component

which we want to make.

I hope this video
was useful to you.

If you have questions,

if you're not able
to understand

certain part of
this drawing,

then please let me
know the comment box,

and I'll get back to you
as soon as possible.

And do like, comment,

share, and subscribe.
Thanks for watching.