The furniture industry has a vocabulary problem. The word "wood" is used to describe at least four wildly different materials, and salespeople rarely volunteer which one is on the price tag. Knowing the difference saves you money and disappointment.
The four materials, ranked
1. Solid timber
An actual tree, cut into boards, kiln-dried, planed and joined. It is what most people picture when they say "wood". It is the most expensive option, and the most repairable: scratches can be sanded out, dents steamed up, finishes stripped and re-applied indefinitely.
Solid timber moves. It expands across the grain in humid weather and contracts in dry. A good cabinetmaker designs around this movement with breadboard ends, floating panels and seasonal-tolerance joinery. A bad one ignores it, and the piece splits within five years.
2. Plywood
Layers of wood veneer glued together with the grain alternating. Plywood is dimensionally far more stable than solid timber and, in marine and birch grades, structurally excellent. It is appropriate for chair seats, drawer bottoms, cabinet backs and structural panels. It is not appropriate (cosmetically) for visible surfaces, unless edged in solid wood.
3. Veneer over substrate
A very thin slice of real wood (usually 0.6 mm) glued onto a substrate of plywood, MDF or particle board. The visible surface is real, beautiful, often very expensive timber (walnut, rosewood, burr veneers). The substrate is cheaper. A well-made veneered piece can be visually indistinguishable from solid timber and is sometimes structurally superior.
The risk is edge wear. Veneer is thin. If the edge chips, it cannot be sanded down or repaired easily. Good veneered pieces have solid-wood edging to protect against this.
4. MDF / particle board
Wood fibres or chips glued together under pressure. MDF is dense, smooth, and accepts paint beautifully — it is the right material for painted built-in cabinetry. Particle board is its lower-grade cousin, used in flat-pack furniture because it is cheap and uniform.
Neither holds a screw well. Both swell catastrophically if water gets into a cut edge. Neither can be repaired in any meaningful sense; if a corner chips off, you replace the whole piece.
When each material is appropriate
| Solid timber | Visible structural pieces: dining tables, chair frames, headboards, sofa frames, table legs |
|---|---|
| Plywood | Structural panels under upholstery, chair seats, drawer bottoms, cabinet backs |
| Veneer over plywood | Large flat surfaces where solid timber would warp: wardrobe doors, sideboard tops, panelling |
| MDF | Painted built-in cabinetry, wall panelling, painted door fronts |
| Particle board | Honestly: avoid in furniture you intend to keep more than five years |
The showroom test (no tools required)
Stand in front of a piece. Open a drawer or a door. Look at the edge where the front meets the side.
- If you see continuous grain pattern wrapping the corner: solid timber
- If you see a thin layer of grain over a different-looking, often layered, edge: veneer on plywood (acceptable)
- If you see grain on the face and a smooth, often rough or papery, edge that has been painted to match: veneer on MDF or particle board (red flag for an expensive piece)
- If the edge is the same painted colour as the face with no visible wood: MDF (fine for painted built-ins, not fine for a "wood" sideboard)
Then tap. Solid wood and dense plywood sound dull and heavy. Hollow particle board sounds tinny. Veneered MDF sounds in between.
Veneer is not a lie. Veneer-on-MDF sold as "solid wood" is a lie.
What we use, and why
At Yottabit we use solid walnut, white oak and ash for all visible structural pieces — chair frames, table tops, sofa frames, headboard frames. We use birch plywood for chair seats, sofa frames where they will be upholstered over, and drawer bottoms. We use solid wood with veneered panels for wardrobe doors and sideboards larger than 1.8 m, because pure solid wood at that size will warp.
We do not use MDF for anything visible in our standing collection. We will use it occasionally on commissioned built-ins where the surface will be painted — because that is the right material for that job, and using anything else would be wasteful.
The takeaway
Most furniture buying disappointments come from a mismatch between what the buyer thought they bought and what they actually bought. The fix is not to memorise wood species; it is to ask the question, in plain language: "What is this piece actually made of?" A maker who answers it directly and shows you the inside is a maker worth buying from.
If you'd like to see real solid timber, real plywood and real veneered panels side-by-side, our material library lives at the Glenmarie atelier — drop by.