- In this movie, we'll take a look at line weight,
which determines the thickness of a stroke.
Now, notice down here I have a series of
hand drawn characters that are
based on these letters at the top of the document,
which are set in a font called Adobe Caslon Pro.
Now, if you don't have that font
and you end up getting a font warning when
you open this document, don't worry about it,
it's not going to affect your experience at all.
Now, notice that each one of these letters that
requires more than one path outline,
such as the a and the b, and so forth,
are created as compound paths.
And, you can see that's the case by
the appearance of the words Compound Path
up here in the control panel.
And, the reason compound paths are so useful, is that
they assure uniformity across fill and stroke attributes.
So, for example, take a look at the four paths that
currently make up this letter g,
they're all filled and stroked differently.
But, if I go ahead and partially marquee those paths with
the black arrow tool in order to select them,
and then I go up to the Object menu,
choose Compound Path, and then choose Make,
Illustrator is going to adopt the fill and stroke
attributes of the rear-most shape,
which is this ellipse at the top of the g.
And, as a result, we end up with one set of
fill and stroke attributes,
which is why compound paths are routinely used in
the creation of text, whether hand drawn or otherwise.
All right, now, I'm goint to go ahead
and marquee these letters to select all of them.
Then notice up here in the control panel,
this value right next to the word Stroke,
that's the line weight.
Now, you should know,
Adobe calls this value the stroke weight,
but they are, by far, in the minority in that regard.
This attribute has been with us since the
days of traditional paste-up, which go back decades before
Illustrator ever appeared on the market.
And, it has been called line weight
literally for generations.
But whatever you decide to call it,
it affects the thickness of the stroke.
There's a few different ways to change the line weight.
One is to click on this up arrow icon,
which is going to incrementally increase the
thickness of the stroke.
You can also just click inside the line weight value
and press the up arrow key,
or you can even press and hold that key if you like.
You can also press the down arrow key in order to
incrementally reduce the thickness of the strokes.
If you want to increase or reduce the line weight in
larger increments then you can press shift
along with an arrow key,
either the up arrow key, in this case,
or the down arrow key.
Another way to work is to enter your own custom value.
For example, if I enter 15.33 and then press the enter key,
or the return key on the Mac,
then you can see that the line weight is accurate to
1/100th of a point.
Finally, you can select a preset by
clicking on this down pointing arrowhead
and choosing anything from 0.25 pts onward.
Notice, if I go ahead and choose this first option,
I'm going to have to zoom way in
in order to see these strokes.
And, I'm also going to have to
hide these points and segments by
going up to the View menu and choosing Hide Edges,
or you can press that keyboard shortcut of ctrl + h
here on the PC or cmd + h on the Mac.
Now notice, that even though we are
no longer seeing the points and the segments,
that these letters remain selected.
All right, I'll go ahead and press ctrl + z
or cmd + z on the Mac, to undo that move,
so that we can just take a look at
these line weights for a moment.
Now, notice that I am zoomed in all the way to 400%
and yet the lines are only taking up one pixel on screen.
That's because a quarter point line weight is
1/4 of 1/72 of an inch, which is to say
1/288th of an inch thick, which is about the
thinnest line that an output device can render.
Which is why this line weight is known as a hairline.
Another very thin and common line weight is
0.5 pts, that is to say, half a point.
Which is a little more likely to
survive the printing process.
But, I want some big, thick strokes.
So, I'm going to go ahead
and click this down pointing arrow head once again
and then choose 20 pts from the menu.
At which point we will end up with
these strokes right here.
Now I'll go ahead and bring back my points and segments by
pressing ctrl + h or cmd + h,
and now I'll press ctrl + 0 or cmd + 0 on the Mac
to zoom out.
And then, finally, I'm going to change the
color of these strokes by clicking on the
second swatch up here in the control panel.
Then I'll select this preset purple,
which is R102, G45, and B145,
in order to produce this effect here.
Now, I'll press the escape key in order to hide that panel.
That is how you adjust the
most fundamental element of strokes,
which is the line weight,
here inside Illustrator.