AutoCAD Spline Command Tutorial Complete - Fit; Control Points; Convert

in this tutorial we will learn:about
spline command in detail if you want to
use spline command from keyboard the
keyboard shortcut is is PL enter and you
can activate spline command if you want
to give it from ribbon for that you have
to click on draw then there are two
types of spline are there spline feet
and spline cv that is control vertices
so at first we will create this spline
feed click on the command give the first
point and click in zigzag mode so it
will create a smooth curvature
press ENTER to come out if you click on
this spline it it is passing through the
feed points that is that is the meaning
of spline feed that means it will pass
through the feed points and the second
is spline CV that is controllable
vertices so it will be created with the
difference to control over size what I
say so you will have to specify the
control vertices click the first point
second point so that point will act as a
control vertices and as per that the
spline will be created this enter to
come out if we click on this line you
will view the vertices if you manipulate
these vertices the shape of the spline
will be modified you have to at first
create the spline and then you can
modify the shape using this either feed
points or control where vertices you can
create the desired shape press escape to
come out spline then the first option is
method it is the same you can choose
feet or CV whatever you is the
requirement so I will go by feet give
the first point now here next option is
start tangency that means you can define
the tangency for the curvature that will
be created
suppose i do tangent
like this and I will use the second
point so my curve is created like that
if I give third point fourth point and
if we I click on in tangency
so using this tangency parameter you can
control the curvature of the spline how
you want it click there
so spline will be created like that so
start tangents will be the curvature at
the start of the spline then again
spline then start point then there is
one more option is tolerance if we give
suppose tolerance of 1 enter and if now
we create the spline so it will be
created with tolerance of 1 if you click
the spline so you can view that the
control the fit points are away from the
spline actually in the original spline
it was on the spline but in this case it
is away from the spline that means it a
tolerance of 1 mm is used so this
distance will be within the tolerance of
1 1 unit actually so in this way you can
control the curvature using tolerance
then there is other option is undo if
you want to cancel the last point you
can click on this undo so last point
will be cancelled and if you want to
connect it to the start point click on
this close option so close spline will
be created then there is one more option
is object you can create spline using
object also so for this object if we
click on it we will need a spline fit
polyline so at first we will create this
spline fit polyline we will skip
polyline great we will create one
polyline then to convert this polyline
into spline feed click on it
right click and then select polyline and
make it spline fit now it is looking
like a spline but it is not a spline it
is a polyline if we check it using list
command enter so it is a right now it is
a polyline so you want to convert this
polyline into spline so click on spline
fit object and select this just created
polyline and enter if now we check the
type of this line list select the object
enter so it is a spline X spline so in
this way you can convert polyline into
spline same way if you want to convert
spline into polyline for that select the
polyline right click spline and convert
to poly line and then you will have to
specify the precision so more this
procedure it will be more away from that
spline the lesser the precision it will
be more accurate suppose I give one so
you can specify from 1 1 to 99 value if
I give minimum of 1 so as per that that
supply polyline will be created so in
this way you can convert spline to
polyline or polyline to spline in this
way we have covered all the options so
we will stop here thanks for watching