Brush settings

Right-click the Brush slot and Brush Properties opens: the brush's basic settings at the top, its dynamics below, and the list of brushes on the right.

Changes apply to the next stroke straight away — and, if strokes are selected with the Selection tool, to those strokes too.

The basics

Setting	Range	What it does
Color	—	The brush colour. Click to open Pick Color. Ctrl + drag left / right on it changes the lightness.
Size	1 – 512	The brush diameter.
Opacity	1 – 100 %	How strong a stroke is.
Flow	1 – 100 %	Pigment laid down per stamp. Low flow builds up gradually where you go over the same area.
Hardness	0 – 100 %	Edge softness — lower is softer. (Pen, Flat Pen and Brush Pen are always hard-edged.)
Falloff	six curves	How the edge fades: Linear, Soft, Plateau, Sharp, S-curve, Bell.
Reset brush	—	Discard every change to this brush and put it back to how it shipped.

Brush dynamics

The sections fold open and shut; Pressure starts open. Each slider shows its value in its label — "Size 85%".

Pressure

Slider	What it does
Size	How much pen pressure changes the width.
Opacity	How much pressure changes the opacity.
Flow	How much pressure changes the pigment per stamp. Pair a low value with low Flow for a brush that builds up slowly.
Tilt	How much pen tilt widens the stroke — tilt the pen to shade broadly.

At 0 % the setting ignores pressure; at 100 % the lightest touch shrinks the stroke to that brush's minimum.

Speed

Slider	What it does
Size taper	Fast strokes get thinner — the whip-like exit of real ink.
Opacity taper	Fast strokes get lighter.

Tip shape

Setting	What it does
Width / Height	The tip's proportions (10 – 300 %). Equal is round; a lower Height gives a chisel or calligraphic nib.
Angle	The tip's angle, 0 – 360°.
Sharpness	How needle-fine the ends get at low pressure (Pen, Brush Pen and Marker).
Flip tip horizontally	Mirror the tip.

Stroke

Setting	What it does
Spacing	Distance between stamps, as a fraction of the size. Small is a solid line, large a dotted trail.
Smoothing	Steadies a shaky line, at the cost of a little lag. (Applies to the mouse; pen strokes are left as drawn.)
Fade in	How much of the start ramps up from nothing.
Fade out	How much of the end tapers away — applied once the stroke is finished.

Randomise

Setting	What it does
Scatter	A random offset for each stamp.
Count	Stamps per step, 1 – 12. Raise it with Scatter for spray and foliage.
Rotation	Random rotation per stamp.
Size var	Random size per stamp.
Noise	General size and opacity noise.

Rotation, Size var and Noise act on the round-tipped brushes — Pen, Brush Pen, Watercolor and Smudge. Brushes drawn with a shaped or image tip (Pencil, Marker, Chalk, Sumi, Dry Pen, Bristle, Flat Pen, the Sootline pack, and any brush you give a Tip) ignore them; on those, Count adds stamps only when Scatter is above 0.

Texture

Setting	What it does
Tip	An image used as the stamp shape. None uses the brush's built-in round or flat tip.
Paper	A paper or surface pattern the stroke is filtered through. It is fixed to the screen, not the stroke, so every stroke reveals the same surface.
Mode	How the paper eats into the stroke: Paper thins it evenly (ink on textured stock); Speckle breaks it into flecks (chalk, charcoal); Graphite is a fine built-in tooth (pencil); Burn keeps a solid core and lets the paper bite the edges.
Depth	How hard the paper bites. 0 switches it off.
Grain size	How coarse the paper is, 20 – 1200 %.
Cutoff	Speckle mode only: coverage below this is dropped, which breaks a stroke into separate flecks.

Picking a Paper while Mode is None switches Mode to Paper for you.

The Tip and Paper lists show the patterns shipped with Am_sketch and your own, marked (mine). See Your own brushes and textures to add patterns.

Your own brushes

Right-click the brush list for its menu:

Item	What it does
Add brush	Copies the current brush as New Brush and selects it — the way to make a brush of your own.
Rename brush	Renames a brush you added.
Remove brush	Deletes a brush you added. Built-in brushes cannot be removed.
Save current settings	Keeps your changes to this brush across restarts.
Reset to default	Same as Reset brush.
Import texture...	Turns an image into a new brush (PNG, JPG, BMP, TIFF or WebP; light parts paint).

Changes are temporary until you save them

Tweaking a brush changes it for this session only. Choose Save current settings to keep the change — or Add brush first to keep the original and make your version a brush of its own.

A built-in brush with a different paper

To give a built-in brush (Pencil, Pen…) a different Tip or Paper for good, Add brush first and change the copy: a built-in brush keeps its own patterns when Am_sketch restarts.

Your brushes are stored in Documents\Am_sketch\presets — see Files and folders.