At Rebecca’s suggestion, I decided to post a few examples of shading techniques by a couple differnent artists. These demonstrate methods of shading with ink lines. I had to keep the images small so I hope the deatils are clear enough.
Here’s a drawing by Joseph Clement Coll:

It has an almost painterly feel to it in how all the forms are carved out with the lines. Instead of outlining the shapes, like the buildings in the background, they are drawn with short broken strokes to represent the details, and the lighter tone in this area is very consistent. Notice how all the lines are fairly short and straight. He also varies the density and thickness of the lines to create darker values. The technique he uses on the rocks in the background is repeated in the shirt; a sort of a woven pattern that Coll used often in his other drawings.
Here is a close-up of an ink drawing by Virgil Finlay:

[font=Verdana][size=2]All the lines follow a diagonal path, and the shading is created completely in terms of values made by the density of the lines. The forms are not shaped with the lines, but are just suggested by the values they make. This technique creates a dense atmosphere where nothing is outlined, and all surfaces have the same texture.
Heres a detail of another Finlay drawing.

[font=Verdana][size=2]He uses a great variety of lines in this image, and the short strokes create a wide range of value and texture.
Okay, one more Finlay (yes, I love his stuff.) He’s a good example here since he uses so many different textures in his drawings.

I wanted to show this one as an excellent example of stippled dots of ink. He shades the face beautifully this way, and the dot pattern has to follow the contour of the face to be convincing, but he also mixes in some cross-hatching in the darker areas.
I hope these drawings inspire people to try different techniques with ink pens.
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