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Material knowledge

Wood species for intarsia

In intarsia the choice of wood decides contrast, calm, depth, the effect of light and the precision of the craft. This page gives the overview: what sets wood species apart and how to choose them for an intarsia.

Flow No. 2 brings together the four woods Reihax works with most: wenge, oak, ash and walnut.

Photo: Reihax

Why the choice of wood is decisive in intarsia

In intarsia, wood is not just the material something is made of; it is the visible language of the work. Every species brings colour, pores, figure, fibre direction, density and its own way of catching the light. These properties decide whether a pattern looks calm, strict, warm, graphic or spatial.

A good choice does not start with the question of the most expensive wood but with its role in the design. A dark wood can give outline, a light wood can create area and air, a lively wood can create movement. Used in the wrong place, the material can make even a cleanly cut pattern look restless or flat. Concrete examples of such decisions are shown on the pen holder project, where wenge, oak, walnut, ash and mahogany are used in different pairings. If you are starting out in geometric intarsia, you will find advice on choosing materials for a first project in intarsia for beginners.

Contrast between species

Contrast is not only light against dark. Colour temperature, pores, density of figure and reflection all play a part. Wenge next to oak looks graphic and clear. Walnut next to ash can seem softer, warmer and less harsh. The pairings and how their colour temperatures relate are described in detail in contrast and colour temperature.

What matters in intarsia is that contrast stays readable without making the work loud. Too strong an opposition can tear a small object apart; too weak a one can make the pattern disappear. The right tension comes from controlled neighbourhoods.

Two kinds of contrast: walnut with ash plays warm against cool, wenge with oak mainly dark against light.

Photo: Reihax

Figure, cut and visual movement

Every species has its own way of moving. Some veneers show long calm lines, others a marked crown figure, pores or shifting zones of light. These differences act directly on geometric patterns. A calm figure can sharpen edges, a lively one can create movement and depth.

The grain direction matters as much as the species itself. The same material can look lighter, darker, calmer or livelier when it is turned. So the choice of material should always be thought through together with orientation and the fall of light. How the cutting method, crown cut, quarter cut or rift, shapes the visual result is explained in types of veneer and cuts.

Open and closed grain

In the workshop people often talk about open and closed pores. Open-pored woods show their pores more clearly and can make a more tactile, livelier surface. Finer structures that look closed seem calmer and can suit precise geometric areas better.

The pores also affect the finish. A finish can emphasise pores, darken them or fill them visually. So the question is not only how a wood looks raw, but how it looks after sanding, pressing and finishing. How pore structure and cut are connected, and why quarter-cut veneer is usually more stable for geometric intarsia, is described in types of veneer and cuts.

Dark and light compositions

Dark woods give weight. They can anchor lines, sharpen outlines and lend a pattern calm or strictness. Light woods open up a surface, bring air into the composition and make small objects look lighter.

A fine intarsia rarely comes from maximum contrast alone. It comes from dark and light zones that are spread deliberately. The eye should be led, not made to jump. In Reihax objects with a geometric language, this weighting is central.

Veneer format and quality of supply

Decisions about material do not start with the design but with buying. Which veneer format, which thickness and which condition suit geometric intarsia has a direct effect on how it cuts, how flat it stays and how good the joints are. Edge banding is unsuitable for intarsia, and roll veneer or veneer with a fleece or paper backing brings problems of its own, even when they are sold as cheap sources of veneer.

Veneer grades and supply forms explains all the common formats, their pros and cons for different ways of working, and why consistency within one flitch matters so much for compositions with many pieces.

Stability and workability

Species differ in density, hardness, brittleness, pore structure and how they behave when cut. Some veneers can be fitted cleanly and predictably, others react more sensitively at the edges or splinter more easily. For fine intarsia, what counts is not only the look but also the quality of the cut.

Stability also comes from a suitable substrate, an even thickness of veneer, clean gluing and controlled pressing. What is veneer? explains why the build-up of veneer and substrate matters so much for precise surfaces. The practical side of cutting and fitting is described in cutting and fitting veneer.

Flow No. 1: all four woods in one composition, each with its own lightness and figure.

Photo: Reihax

How woods respond to finish

A finish almost always changes how wood is seen. Oil can strengthen colour and depth, wax can give a softer feel, lacquer can bring protection and a more even reflection. Depending on the species, the effect will be stronger or more restrained.

For decisions about material that means raw wood is only the beginning. A combination that looks balanced before the finish can look noticeably darker or warmer after oiling. Good planning therefore tests pairs of materials under conditions close to the final surface. How different finishes look on geometric intarsia patterns with several woods is explained in finishing geometric intarsia. A direct comparison of oil, wax and shellac on single species is in oil, wax and shellac.

The wood species pages

Each of the following pages describes one species in the same way: colour, pores, figure, role in contrast, workability, response to finish and typical use at Reihax.

The species at a glance

All seven species pages follow the same profile, so that wenge, oak, walnut, ash, mahogany, maple and cherry can be compared directly.

  • Colour temperature: cool, neutral, warm or reddish.
  • Lightness: light, medium, dark or very dark.
  • Pores: open, distinct, fine or calm.
  • Movement of the figure: calm, linear, lively or changing.
  • Role in contrast: area, line, weight, accent or transition.
  • Behaviour as veneer: cut edge, tendency to splinter, behaviour in the press.
  • Response to finish: darkening, warmth, depth, sheen.
  • Use at Reihax: suitable patterns, kinds of object and product examples.
Before and after the finish: each of the four woods responds differently, the dark ones gain depth, the light ones get warmer. Workshop light on the left, studio light on the right.

Photo: Reihax

Frequently asked questions

Which wood is best for intarsia?

There is no single best wood. A species is suitable when its colour, figure, pores, veneer quality, stability and finish fit the composition. For clear geometry, controllable contrasts matter more than rarity.

Why are light and dark woods combined?

Light and dark woods make a pattern readable. A dark wood such as wenge can give outline and weight, while oak or ash open up light areas. What matters is that the contrast is placed deliberately as part of the composition, not by chance.

Do the pores of a veneer really matter?

Yes. Open pores can make a surface look livelier and coarser, closed or finer structures calmer. That affects both the look and sanding, filling and finishing.

Can a finish change the colour of wood a lot?

Yes. Oil, wax or lacquer can change contrast, depth and colour temperature. Some woods get noticeably darker or warmer, others keep their lightness better. So the finish should be part of the thinking when the materials are chosen.