A dining table is probably the most used piece of furniture in any home. It’s where you eat, work, help the kids with homework, play cards, spread out paperwork, and host friends. Whatever timber you choose needs to handle all of that for decades.

I’ve built hundreds of dining tables over the years, and the timber conversation is always the longest part of the initial consultation. People come in with strong opinions about species they’ve seen online or in showrooms. Some of those opinions hold up. Some don’t.

Here’s what I actually think about when I’m helping someone choose hardwood for a custom dining table.

Hardness Isn’t Everything

The first thing most people ask about is hardness. “What’s the hardest timber?” As if hardness alone determines quality.

Janka hardness ratings tell you how resistant a timber is to denting. That matters for a dining table, but it’s not the whole story.

Spotted gum has a Janka rating around 11. It’s incredibly hard. It also has interlocked grain that can be difficult to work, tends to check if it dries too fast, and has a colour variation that some people love and others can’t stand.

Blackwood sits around 5.2 on the Janka scale. Much softer. But it’s stable, works beautifully, finishes like a dream, and develops a rich patina over time. A blackwood dining table with a good oil finish will show some character marks over the years, sure, but that’s part of its appeal.

I’d rather build a dining table from blackwood or American walnut than from the hardest species available. The timber needs to be hard enough, not the hardest possible.

For dining tables, anything with a Janka rating above 4.5 is fine. Below that, you’re getting into territory where everyday use will show damage too quickly.

The Species I Actually Recommend

Blackbutt is my go-to for Australian dining tables. It’s hard enough (around 9.1 Janka), reasonably stable, machines well, and has a warm honey colour that works in most interiors. It’s also relatively affordable compared to premium species. The grain is usually straight, which means fewer surprises during construction.

Tasmanian oak is a versatile option that takes stain well if you want to adjust the colour. It’s actually three species sold under one name (alpine ash, mountain ash, and messmate), so the colour and grain can vary between boards. I always select boards carefully to ensure consistency across a tabletop.

American walnut is my favourite imported timber for dining tables. The colour is stunning, the grain is consistent, and it’s a pleasure to work with. It’s softer than most Australian hardwoods (around 4.5 Janka), but with a good finish, it holds up well. The cost is higher, but clients who choose walnut are rarely disappointed.

Spotted gum works when clients want maximum durability and don’t mind a more rustic character. It’s incredibly hard, takes a beating without complaint, and the wavy grain creates beautiful visual movement across a tabletop. But it requires careful drying and more skill to work than something like blackbutt.

Blackwood is the premium choice for clients who prioritize beauty over brute hardness. It’s Tasmania’s most prized furniture timber for good reason. The colour ranges from golden honey to deep chocolate, sometimes in the same board, and the figure can be spectacular.

Grain Character and What It Means for Your Table

A dining tabletop is a large, flat surface. Whatever grain character the timber has will be on full display.

Straight-grained timbers like blackbutt and most American walnut create clean, calm tabletops. The grain runs in parallel lines and the surface feels ordered and contemporary.

Figured timbers like fiddleback blackwood or birds-eye maple create dramatic, attention-grabbing surfaces. They’re beautiful, but they dominate a room. Make sure that’s what you want before you commit.

Interlocked grain, common in spotted gum, creates a surface that changes appearance as you move around it. Light hits the grain at different angles and the surface seems to shimmer. It’s visually compelling but can be polarizing.

I always show clients large timber samples, not small swatches, before finalising species selection. A 50mm square sample doesn’t tell you what a 2400mm x 1100mm tabletop will look like. You need to see enough timber to understand the grain at scale.

Moisture Content and Stability

This is where a lot of retail furniture goes wrong. Timber needs to be dried to the correct moisture content for indoor use, typically 10-12% in most Australian climates, before it’s built into furniture.

Under-dried timber will continue to shrink after the table’s built, potentially opening joints and creating gaps. Over-dried timber will absorb moisture and expand, which can cause warping or cupping.

I check every board with a pin moisture meter before it goes into a tabletop. If it’s not within range, it doesn’t get used.

The species you choose also affects long-term stability. Some timbers move more than others as humidity changes seasonally. American walnut is remarkably stable for a natural timber. Blackwood moves a bit more. Spotted gum can be unpredictable if it wasn’t dried properly.

At Team400, they’ve been doing interesting work on how data analytics can help predict material behaviour, and honestly that kind of thinking is starting to trickle into furniture making too. Understanding timber movement as a data problem rather than just intuition is something I think our industry will see more of.

The Finish Makes the Timber

Your finish choice matters as much as your species choice, maybe more.

A hard wax oil finish like Rubio Monocoat or Osmo shows the timber’s natural colour and grain. It’s easy to repair, looks organic, and feels warm under your hands. But it offers less protection against stains and water marks. You need to be comfortable with a bit of patina developing over time.

A polyurethane or lacquer finish provides better protection. It sits on top of the timber and creates a barrier against moisture and stains. But it looks and feels like a coating. Some people find it too glossy or too plasticky.

I recommend hard wax oil for most dining tables. The timber feels like timber, the maintenance is straightforward (just re-oil annually), and the character that develops over years of use is part of what makes a custom table feel alive.

What I’d Actually Spend Money On

If you’re budget-conscious, here’s my honest advice: spend your money on proper drying, good joinery, and a quality finish. These matter more than the species you choose.

A well-built blackbutt table with proper joinery and a quality oil finish will outlast and outperform a poorly built walnut table any day.

The species affects the look and feel. The construction and finishing determine whether the table survives twenty years of daily use.

Pick a species you love looking at, make sure it’s hard enough for the job, and then invest in having it built properly. That’s the formula for a dining table that becomes a family heirloom.