Cross Hatching is an extremely popular technique used by inkers to indicate shadows. It's a very effective technique, if done correctly. Below are some different examples of cross hatching techniques...

These are the 4 different cross hatching methods. They are names that I have made up for them because they make moer sense when you describe them the way they are shown in the drawing. Cross hatching uses lines coming from 4 completely different directions. (See picture, bottom illustration) But it is common to use just one layer of lines, or 2, which I called 1/4 hatching and 1/2 hatching respectively. I find it makes it easier to call different kinds of cross hatching by different names because this way it's easier to identify which section of a piece you're critiquing. As well, each different kind of cross hatching provides different shaded values. So depending on how dark the area is needed, you will use a different kind.

Figure 1 is an example of good cross hatching. It did it quickly so it's not all that good, but when you do use cross hatching, it should look something like this. The light the area in question gets, the less layers you use. You can see here that the very top has four different layers with the lines going in four different directions whereas the las section only has only layer with the lines going in one direction. Makes sense, doesn't it? I think so.

Figure 2 is another example of cross hatching, but this is something I've never used before, so it felt a little awkward inking it. This is composed of 1/2 hatching using only 2 different layers. I've never actually used this in an inking before, and I don't think I've ever really seen it before. (My example is terrible) It was an example in my inking book, so i figured I'd put it here as well so that you can have a look see.

Figure 3 still uses the 1/2 hatching like from figure 2, but it's a little nicer to look at. I have used this before. It is very easy to use, and I really like the way it looks. It's more of a sparatic (?) cross hatching that needs less control, and still looks really good. But I can look bad if it's too tight. Use this one wisely young padawan learner.

Figure 4 is the last example of cross hatching I have for you. Figure 4 is horrible cross hatching, a major faux pas in the world of inking if you will. Never ever use cross hatching like this. It is plain and boring. It does not fade, and it's too technical to use on anything except perhaps a building, and even then you'd want to use something like Figure 1 instead. Also, the lines all intersect at right angles, which makes it look too mathmatical for it's own good. Very very boring.