Oil, wax and shellac compared

Why comparing finishes is different for intarsia

In intarsia and marquetry the finish does not meet a uniform wooden surface, but several species, joints and layers of veneer. A surface that looks good on a single board can create too much gloss, too much darkening or restless reflections in a geometric composition.

That is why a finish always has to be seen as part of the whole build-up: the pairing of materials, the sanding, the pores, the glue lines, the grain direction and the angle of view all work together.

Oil: depth, darkening and rich wood colours

Oil finishes can deepen wood colours noticeably. They emphasise figure, pores and colour temperature and often create a sense of depth that looks natural. On dark woods this effect can be very strong; on light woods oil can strengthen warmth and a golden tone.

The drawback is the darkening. On wenge, oil can close up detail in very dark areas. On oak, oil can make the light surface warmer and somewhat darker. In high-contrast intarsia this effect has to be tested beforehand.

Wax: a calm feel and controlled sheen

Wax can give a soft, tactile surface and keep the sheen more restrained than many glossier finishes. It often looks less deep than oil, but can be pleasant on small objects, because it does not reshape the wood surface much.

In geometric work wax can help calm reflections. But it is not automatically free of care or especially robust. Depending on use, it may need looking after, and its protection against moisture or wear is limited.

Shellac: depth, reflection and a classic surface

Shellac can give wood a clear depth and a fine gloss. Depending on how it is applied, it creates a very refined, classic surface. In intarsia that can be attractive, because pores, lines and changes of material look livelier.

At the same time shellac has to be used with care. Too much gloss can disturb the geometric calm or make a surface look more formal than suits the object. For modern geometry, controlling the reflection is decisive.

Compared by effect and use

Oil gives strong depth and often a natural look, but calls for control of darkening. Wax gives a pleasant feel and calm reflection, but can be less resistant. Shellac gives depth and repairability, but can look glossier and more classic.

Repairability and care differ too. Wax and shellac can be reworked well in certain situations; oiled surfaces can be sanded locally and re-oiled. Some pure oils need regular care, a hard-wax oil such as the one Reihax uses does not in normal use. No choice is universal. The best decision follows the object, not a fixed ranking.

Veneer work and geometric compositions

In veneer work, the finish must not overtax the thin material, the joints and the preparation by sanding. The page sanding veneer describes why scratches, glue residue, dust and rounded edges have to be checked before the finish.

Geometric compositions react especially strongly to reflection. If a finish makes single areas shine by different amounts, the pattern can look restless. The finish has to sharpen the geometry, not cover it.

Wenge, oak, dark and light woods

Wenge often reacts to finish with a strong sense of depth. Oil can make it richer and darker, wax can make it look calmer, shellac can increase reflection and a deep sheen. What matters is that pores and lines stay visible and do not become a black area.

Oak reacts differently. Oil can increase warmth and a golden tone, wax can make the open pores feel calmer, shellac can emphasise figure and reflection. With light woods, controlling the colour matters: too warm can quickly look yellowish.

How Reihax chooses the finish

Reihax chooses surfaces by the effect of the material and geometric calm. A finish should not hide the wood under a plastic-like layer. It should balance depth, feel and protection so that the composition stays clear.

Preferred are approaches that keep the natural look of wood, control reflected light and do not visually soften edges. With dark and light pairings such as wenge and oak, the check is whether the finish improves contrast and readability or darkens single areas too much.

In practice the choice for every current Reihax piece has fallen on hard-wax oil in a satin sheen, in two thin coats. Reihax uses no lacquer and no shellac (lacquering).