Finishes for wood art

Why the finish is decisive in intarsia and veneer work

A finish is not just a protective layer. It changes how wood takes in light, reflects it and looks in colour. In handmade intarsia, the finish can strengthen a calm geometric surface or make it restless without meaning to.

With veneer especially, the surface is closely tied to the thickness of the material, the sanding and the quality of the joints. A finish can deepen good preparation, but it cannot make poor preparation invisible.

Depth, contrast and reflected light

The finish affects the perceived depth of a wood. Dark woods can look richer and heavier, light woods warmer or more golden. At the same time the reflection changes: a surface can stay matt and calm or throw back much more light.

In geometric compositions that is critical. If a dark field looks too closed under the finish, it loses detail in its pores. If a light field shines too much, it can outshine the composition. So the finish is part of planning the composition.

Matt or satin

Matt surfaces look calm, restrained and modern. They can keep geometric shapes clear, because they reduce reflections. The drawback: some species visibly lose depth if the reflection is damped too much.

Satin surfaces show more movement of light. They can make the figure, pores and changes of colour livelier, but need more control. Too much gloss can make an intarsia look less natural and more like plastic.

Pores, change of colour and the character of the wood

Open-pored woods often show more structure under a finish. On oak, pores and rays can look warmer and clearer. That can look very fine if the surface has been prepared cleanly.

Dark woods such as wenge react differently. Oil or glossier surfaces can increase depth, but can also close up black areas. The aim is to use the darkness without losing pores and lines.

The main kinds of finish

Oils get into the surface and can strongly emphasise colour, depth and figure. Waxes can give feel and a calmer sheen. Shellac can build depth and reflection very finely, but depending on how it is applied it looks more classic and glossier.

Matt finishes reduce reflections and can calm geometric shapes. Hybrid approaches combine qualities, such as depth, light protection and a controlled sheen, as hard-wax oil in a matt version does, for example. What decides is not the name of the category but the effect on the actual pair of materials.

Protection and visual purity

A surface should protect, but it should not cover up the woodwork. Too little protection can make an object delicate; too much build-up can make it look artificial. In fine wood art this balance is central.

The right decision depends on the object. A desk object handled often needs a different robustness from a wall piece. Still, the surface should not hide wood, joint, figure and geometry.

Why the finish strongly affects geometric compositions

In geometric intarsia, lines, areas and changes of material have to stay readable under control. The finish can improve that readability by clarifying contrast and depth. But it can also weaken it if reflections get restless or single areas darken too much.

That is why the finish belongs in the thinking from the preparation of the surface. Sanding marks, glue residue, open pores and rounded edges often show more clearly after the finish. The finish shows whether the preparation in the workshop was really calm.

How Reihax approaches surfaces

Reihax gives priority to a surface that leaves the wood visible and does not cover up geometric sharpness. The finish should support depth and the effect of the material without laying a thick, plastic-like layer over the work.

What matters is controlled reflected light, a natural feel, kept edges and balanced protection. Dark materials should keep their depth, light materials should stay light and not shine too much. The aim is no maximum layer of effect, but a calm, lasting surface true to the material. In practice every Reihax piece is finished with hard-wax oil in a satin sheen, in two thin coats.

The finishing pages in detail

These pages cover single decisions in more detail:

• Oil, wax and shellac
• Shellac: depth, chatoyance and repairability
• Hard-wax oil for intarsia and veneer work
• Matt surfaces
• Caring for handmade wooden objects

Finishes at a glance

If you are choosing a finish, you can compare it on these points:

• Type of finish: oil, wax, shellac, matt finish or hybrid.
• Visual effect: depth, gloss, warmth, darkening and reflection.
• Reaction of the material: the effect on wenge, oak, walnut, ash and mahogany.
• Behaviour of the pores: emphasis, calming, filling or visible structure.
• Protection: touch, sensitivity to moisture, care and repairability.
• Preparation in the workshop: the sanding needed, freedom from dust and control of glue lines.
• Geometric effect: sharpness, contrast, calm edges and behaviour in light.
• Use: suitable kinds of object and reasons against.