Fineliner, Fountain Pen, Brush Pen: The Tools

Ink forgives nothing. What's on the paper stays there – and that's exactly why it's the best training for your eye and your hand. But before you commit to lines that stay, it's worth laying the tools out side by side. Each one has its own voice: one is matter-of-fact and even, one lively, one fast and broad, one scratchy and unpredictable. You don't need them all, but you should know which one you're carrying in your bag and what it can do.

Fineliner with pigment ink

The fineliner is the most honest starting point. The nib gives one line width no matter how hard you press – that takes a decision off your hands and lets you concentrate on form. The widths range from 0.1 to 0.8: with 0.1 and 0.3 you draw window divisions, railings, roof tiles; with 0.5 and 0.8 you set dark edges, shadow sides and the very front edge of the picture. Two widths are plenty to begin with.

The crucial phrase is pigment ink. It dries waterproof and won't smear when you go over it later with water or paint. Reckon on CHF 4 to 6 per pen, and on rough paper softening and blunting the tip quickly. So keep a fresh pen back for fine work and let the worn one handle the coarse textures – it often writes with a particularly beautiful restlessness.

Fountain pen with a flexible or fude nib

This is where things come alive. A flexible nib spreads under pressure: touched lightly it gives a hairline, pressed harder a strong line. You model weight within the stroke itself, without switching pens. The fude nib is bent upwards; held steeply it gives a very fine line, laid flat a broad one. A single tool thus covers the whole range from detail to darkness – you just turn your wrist.

The point where many people stumble is the ink. Most fountain pen inks are water-soluble. That's not a flaw but an opportunity: run a damp brush over the dry line and colour lifts out, giving you soft grey tones straight from the drawing. But if you want to lay watercolour over it and keep the contour, you need a waterproof document ink such as Platinum Carbon or De Atramentis Document. These pigment inks ask for a little care: don't let them dry out for weeks, and flush the pen with water now and then.

The brush pen

The brush pen has a flexible, pointed fibre or hair tip and moves from wafer-thin to finger-wide in a single stroke. It's the tool for mass: tree canopies, shadows under canopies and awnings, dark window cavities, wet asphalt. Because it covers so much area so fast, it's also the most dangerous tool – in two minutes a sketch can be completely black. Use it deliberately at the end, once you know where the darkest spot in your picture is. Incidentally, a half-dried-out brush pen is worth its weight in gold for grey, streaked areas.

Bamboo pen or twig with an ink well

The most archaic tool is also the most surprising. A bamboo pen or a sharpened twig has no reservoir: freshly dipped, the line is rich and broad; after a few centimetres it turns dry, scratchy, broken. These accidents give stone, bark, plaster and old façades a texture you'll never get that way with a fineliner. The price: you need a table or a stable surface for the open ink well. This is a café, bench or balcony tool, not a tool for standing at a crossroads.

The paper underneath

Nibs want it smooth. A satin surface lets the tip glide without catching or tearing up fibres. For fineliner textures a slightly rough surface is nicer: hatching breaks up a little and looks more alive, though the tip wears out faster. As soon as you want to add washes, meaning work with water, you need 200 g/m² or more, otherwise the sheet buckles and the line sits in a dent.

Waterproof or water-soluble – decide deliberately

Ask yourself this question before the first stroke, not after. Should the line stay put and colour merely accompany it? Then waterproof. Should the line itself become grey, with soft edges and transitions? Then water-soluble. Test each of your tools once at home: draw a stroke, let it dry for two minutes, run a wet brush over it. What you see there you'll know for good.

Exercise

Take a sheet and divide it with a pencil into as many fields as you have tools. In each field draw your alphabet of marks: one long, slow line, a row of dots, a patch of hatching, a continuous loop. Give each tool about a minute. Then sit by the window or go outside and find a single window detail – a frame with a handle, a shutter, a glazing bar with a reflection. Redraw that one detail with each tool, two minutes each, small and without preliminary pencil work. At the end, lay the versions side by side and decide which line feels most like your own. That's the one you'll carry into the next module.