- [Instructor] On occasion, we're provided 2D data
from another source or from a coworker
or from a contractor that we're working
and it just has too much information in it.
Here I've got a 2D shoulder bolt drawing
and you can see we've got
tons of lines that we really don't need.
All of these points, all of this geometry
that's going to just make my model bogged down
if I want to replicate this in 3D.
So let's say we want to keep this geometry.
We don't want to go in here
and start deleting all of this out
because it's still a good reference visually
if we need it down the line,
but we can always suppress this sketch.
What we can do is create a sketch from selection.
So if we go to sketch tools,
you can see here the option create sketch from selections.
What this does is gives you the ability to do exactly that:
create a sketch from the things that you select
in the edit sketch mode.
So I'm going to go in, edit this sketch
and I'm going to just select the contours that I need
so I'm going to select that.
I'm going to select the chain here.
Start selecting the outer extents of this bolt.
Now you can see I've got a number of things selected here,
all with holding down the control key while I did so.
I'm going to go up here, go to tools.
Go to sketch tools.
And say create sketch from selections.
Solidworks is going to think for a minute.
Makes that sketch and doesn't do anything
that I can notice in the background.
Now when I hit the green check mark here,
you'll notice that in front of the freeze bar
we have sketch four.
It's created a new sketch,
and if I hover over it, you can roughly see where it is.
So I'm going to go ahead and hit accept
and I'm going to hide my original 2D geometry.
And now you can see, I've got a model
that's based on the original geometry that I had there.
Now the one thing that didn't stick
is there's no relations in between them.
So it just made a copy of this geometry for reference.
If I want to make sure that this isn't going to change at all,
I'm going to want to select all of that and say fix
and lock it into place.
Otherwise you could go in here and start editing it
and moving things around.
Like even these points aren't fixed right now.
I can drag them so I'll want to go in
and fix those as well if it's required.
But, I have a good representation of the geometry
that I want, without all of the extra excess
from the original model.