- [Instructor] So, here I've got a sketch created for you.
And I'm gonna go ahead and double click on
that sketch to activate it, and I wanna talk about
some sketch modifications here.
So I've just framed out a few curves for you to
start out with.
The modifications that I do want
to discuss are the trim, and extend,
making a corner, and some fillets.
So the first thing actually I wanna do is
as part of the modifications is
clean up the screen a little bit.
The auto dimensions, as you can see,
they just show up everywhere.
They're great, a super good tool so I
don't want to lose the auto dimensions,
but I don't necessarily want to see them.
So the part of this modification for the sketch
is to go under way at the far end
under the constraints tab is to hit
this little black arrow and you'll notice I
have various settings under here,
internal with the sketch so what I want
to do is I want to turn off
the display sketch auto dimensions.
I know it's turned on, you can see here
its got that highlighter on the icon
so when I click that you'll see
those auto dimensions get hidden.
They're still there. I know when they're still there
because if you look at the cue line down here
still there, I've just hid them away.
Alright so I'm just gonna right mouse click,
I'm gonna fit, bring these curves in.
So the first of the sketch modifications
is what's called quick trim.
I click on the quick trim function,
basically it acts as an eraser.
Now, the way this works is, you just pick the end
of the curve you want to get rid of.
And as you can see, it automatically
trims everything up 'cause of the way
we have everything set up I get my constraint
at those end points.
I can also click and drag if I click and drag,
you'll notice that little pencil that shows up
is indicating where I am getting rid of curves.
If I were to pick a curve that does not trim to anything,
like in this case, this guy, it deletes it.
So you can use this also as a delete.
I'm gonna close and I'm gonna undo.
Just control Z on the keyboard
to get it back to my original.
Now the next tool that I like to use,
is what's called quick extend.
So in this case, if I want to take this endpoint,
and run it up to this line, I can just
go to quick extend, does the opposite of quick trim.
As you can see, snaps it.
Then I can go back to quick trim,
and remove the portion that I want to get rid of.
Pretty easy.
Really intuitive, very nice.
Another tool that's very useful,
is what's called make corner.
So I'm just gonna undo, and it's kinda a combination
of the quick trim and the quick extend,
and it's located in the gallery next to the extended trim.
You'll see this is the fillet tool,
come and talk about this here in a minute.
But I'm just gonna go under the gallery
and I'm gonna go into make corner.
And the way this works is, it's kind of a
combination between these two.
I can pick a curve, and pick a curve,
and you'll notice it'll extend
and trim curves all at the same time.
If I come over here and I have the corner defined,
if I pick and pick, you'll see it trims as well.
If I pick on the other side, so it's
keeping the side that you are picking on.
In other words, you're indicating what
you want to keep versus what you want to get rid of.
Okay. So I'll just undo those.
Next one is fillet. So when I click on fillet,
you'll notice I get this little menu that pops up.
This little menu is asking me what do
I want to trim and how do I want to trim it?
So for here I have trim and I have untrim.
So in this case, if I do a fillet between,
let's say these two here, I can pick one,
pick two, and you can see it's asking for radius,
I can type in a radius value- just again, start typing.
Whenever you see a text field like that, if you
start typing, the system is really smart,
super intuitive, it just automatically knows that
you're entering a number into that text field.
So if I come over here and say I want this at 40,
hit enter, as soon as I hit enter, you'll see
it trims everything up.
And it's based off of where last I moved my mouse.
So if I'm in this quadrant, and I type in the
value that I want, that's where the fillet goes.
If you want to just simply pick a couple curves
without having to actually select them in such a way,
you can basically just click and drag, and then drag again.
And it'll automatically do the trim for you.
Now, something to note: that when I do my
selection in said fash with the click and drag,
the radius is based off of the initial intersection
of the first curve that you picked.
So if I pick close to the corner here,
and I go way out here, do something just way obvious
you'll notice that it trims back to the first location,
that first intersection.
So that's where it infers the radius from.
Alright, let me undo that.
Another option here is the untrim, so when
I do create my radius in here,
you'll see it leaves everything as is,
it doesn't trim anything up.
Go back to trim, and then I have what's called
delete third curve.
So I'm going to turn on delete third curve,
and the way this works, I pick curve one,
I pick curve two, you'll notice it puts in the radius.
Now when I come over to this third curve and pick it,
it basically gives you that tritangent rounded off
effect and it deleted that third curve.
I'm gonna undo that and basically do the same thing
from here to here and this time,
I wanna pick this curve, but I want the arc
to go in the opposite direction.
And that's what this button is for.
Anytime you see alternate solution,
it just means switch from the existing condition.
So when I hit that, you'll notice the arc switches over
so if I come over here now and I wanna trim
to this, you see, came in, arc is in the opposite direction
got rid of that third curve.
Here you can see I can also do modifications
by picking a line, I'm using the first mouse button
just grabbing and holding on and
I can drag these things as well so also if I
pick a line at the end point here,
you'll notice I can drag and drop
similar to the way I created things
but now it's simply a modification.
So lots of options for modifications- quick trim,
quick extend, make corner, and of course
you have fillet, and the last one
is what's called chamfer.
So with chamfer, similar to fillet,
I can pick my first curve, and wherever
I pick the second curve doesn't really matter
because the chamfer is based off
of that first intersection point.
And then you also have options here
for that chamfer in the menu
you can see it's symmetric, asymmetric, offset and angle
so if I say asymmetric, and I go like this
now you'll know that it's wherever
I intersected both curves, it's not
just simply asymmetric.
So those are your modifications, you can grab a line,
drag it, drop it, you have your trims, your fillets,
and it worked really really well.
The only one that's kinda not intuitive is
that trim in make a corner where you're picking the sides
that you wanna keep but other than that,
the rest of them, pretty straightforward.