Painting with a palette knife is one of the simplest ways to introduce bold marks, raised texture and expressive movement into an artwork. Instead of blending every colour into a smooth finish, the knife allows paint to remain visible as ridges, broken edges and distinct layers.
Palette knife painting can be used with acrylics or oils and is suitable for landscapes, abstracts, florals, portraits and mixed media work. It is also an enjoyable technique for artists who want to loosen their painting style and become less focused on small details.
What is a palette knife?
A palette knife is a flexible tool traditionally used to mix paint on a palette. Painting knives have a similar appearance but usually feature angled handles that help keep your hand away from the painting surface.
Today, the terms are often used interchangeably. Both tools can be used to mix colour, spread paint, create texture and remove or reshape wet areas.
Our palette knives and painting knife sets include different blade shapes for broad applications, fine marks and detailed texture. The range includes LUCA Professional Artist Palette Knives. LUCA is exclusive to Art Supplies Australia.
Why paint with a palette knife?
A palette knife produces marks that are difficult to achieve with a brush. Depending on the amount of paint and the angle of the blade, you can create:
- Thick impasto texture
- Thin scratches and fine lines
- Broken areas of colour
- Sharp edges and geometric shapes
- Smooth, flat areas of paint
- Soft colour blends
- Raised highlights that catch the light
The knife also wipes clean quickly, making it practical when changing colours. Because its blade does not absorb paint, colour generally remains stronger and less diluted than it may when repeatedly worked with a brush.
Choosing the right palette knife
The shape and flexibility of the blade influence the marks it creates. You do not need a large collection to begin, but having two or three shapes will give you more options.
Small pointed knife
A narrow pointed blade is useful for controlled marks, fine lines, flower petals, branches and small highlights. The tip can also be used to scratch into wet paint.
Medium diamond shaped knife
This is a versatile option for beginners. It can spread paint, make short directional strokes and form both narrow and broad marks depending on how it is held.
Broad or rounded knife
A broad blade covers larger areas efficiently. It is useful for skies, abstract backgrounds, sweeping colour and wide areas of texture.
Flexible metal or plastic
Flexible stainless steel blades respond well to pressure and are useful for controlled mixing and painting. Plastic knives are lightweight, economical and practical for beginners, classrooms and experimental mixed media projects.
Which paint works best?
Heavy body acrylic paint
Heavy body acrylics are particularly suitable for palette knife painting because they retain visible ridges and peaks. Matisse Structure Acrylic Paint has a thick consistency that works well for direct knife application, impasto marks and textured passages.
If your acrylic paint is softer or more fluid, an appropriate gel or impasto medium can add body without simply loading the surface with excessive paint. Explore the Matisse Mediums collection for options designed to modify consistency, transparency and finish.
Oil paint
Oil paint remains workable for longer, providing more time to blend, scrape and adjust each mark. When building substantial oil paint texture, work with sound layering principles and use a medium intended for the technique. Very thick layers may dry slowly, particularly when the surface forms a skin before the paint underneath has cured.
Do not mix acrylic mediums into oil paint. Always select a medium made for the type of paint you are using and follow the manufacturer’s directions.
Choosing a painting surface
A firm, properly prepared surface helps support textured paint. Primed canvas is a familiar and versatile choice, while a rigid wooden panel is useful when you want minimal movement beneath thicker applications.
You can explore our stretched canvas and linen collection for ready to paint options. If you are working on an unprimed surface, read our guide to using gesso and priming a painting surface before you begin.
How to paint with a palette knife
1. Prepare your colours
Place a small amount of each colour around the edge of your palette. Leave room in the centre for mixing. Begin with a limited selection so the mixtures remain clear and manageable.
2. Mix with the flat of the blade
Pick up two colours and fold them together by spreading and gathering the paint. Wipe the knife before mixing a new colour to prevent unwanted muddy mixtures.
3. Load the knife
Collect paint along the underside or edge of the blade. A small amount creates broken, dry looking marks, while a heavier load produces broad and raised passages.
4. Adjust the pressure
Light pressure allows the paint to skim across the surface and catch its texture. Firmer pressure creates a thinner, smoother application. Try both approaches on a spare surface before working on your main painting.
5. Change the angle
Hold the blade flatter for broad coverage. Raise it onto its edge for narrow marks, stems, lines and sharper details. Use the tip for dots, small highlights and scratched lines.
6. Layer deliberately
Allow some areas of the underpainting to remain visible. Fresh colour dragged lightly across a dry or partially dry layer can produce lively broken marks without completely covering what is underneath.
Five useful palette knife techniques
Spreading
Spread paint across the surface in the same way you might apply icing. This creates broad, confident shapes and can establish large areas quickly.
Dragging
Place a small amount of paint on the knife, hold it almost flat and drag it lightly across the surface. The paint catches raised areas and creates irregular broken colour.
Scraping
Use the clean edge of the blade to remove wet paint, reveal an earlier layer or reshape an area. Scraping is useful when correcting a passage without wiping away the entire section.
Drawing with the edge
Load the long edge with paint and touch it against the surface to create narrow lines. This can suggest branches, grasses, architectural details or strong directional accents.
Layering highlights
Place lighter paint over a darker dry layer using minimal pressure. Avoid repeatedly working the area. One confident application often creates a cleaner and more energetic highlight.
Common palette knife painting mistakes
- Overmixing colour: Stop mixing before every colour becomes completely uniform if you want varied, lively marks.
- Using too little paint: A knife needs enough material to travel across the surface. Begin modestly, but do not expect strong texture from an almost dry blade.
- Pressing too firmly: Heavy pressure can scrape paint away instead of depositing it.
- Reworking every stroke: Repeated passes can flatten the texture and muddy the colours.
- Using an unsuitable medium: Choose an acrylic or oil medium specifically made for your paint and desired thickness.
- Ignoring the surface: Flexible or poorly prepared surfaces may not support heavy applications as well as a properly primed canvas or rigid panel.
How to clean a palette knife
Wipe the blade frequently while painting. For acrylics, wash the knife with soap and water before the paint dries. Dried acrylic can be difficult to remove and may affect the blade’s flexibility.
For oil paint, first wipe away as much colour as possible with a rag or paper towel, then clean the tool using an appropriate artist’s cleaner. Work in a ventilated area when using solvents and dispose of paint residue and oily materials responsibly.
Start with a simple exercise
Divide a spare canvas or panel into several sections. Use one section for broad spreading, one for broken dragging, one for edge lines and one for layered highlights. This creates a useful reference sheet and lets you understand how the knife responds before beginning a finished painting.
Once you are comfortable with the basic movements, try combining palette knife passages with brushwork. Smooth brush layers can establish the composition, while carefully placed knife marks add emphasis, texture and light.
Explore artist palette knives and sets, Matisse Structure Acrylic Paint and acrylic painting mediums at Art Supplies Australia.