Hickory vs Ash for a Clear-Finished Bench

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For a clear-finished bench, the choice between hickory and ash comes down to appearance, workability, and how much wear the seat or top will see. Both are strong, open-grained hardwoods that take clear finishes well. Hickory is generally harder and more visually varied; ash is usually easier to work and more consistent in color. Either can make a durable bench, but neither will hide poor sanding or uneven finish.

Hickory vs. ash at a glance

Janka figures are averages, not a promise about every board. Species, growing conditions, and moisture all affect the wood. For a bench, sound joinery and adequate thickness matter more than a few hundred pounds of difference in a hardness rating.

How they look under a clear finish

A clear finish darkens both woods to some degree and brings out their grain. Ash tends to stay light and show long, straight growth lines. It suits a simple, modern bench or a project where you want the construction and shape—not color variation—to draw attention.

Hickory is less predictable. One board may contain both nearly white sapwood and darker heartwood, sometimes in sharp bands. That contrast can be the point, but it can also look patchy across a wide seat. Before buying, lay the actual boards together in the arrangement you plan to use. A small sample from a different board will not tell you whether the finished bench will look uniform.

Neither species needs stain to look finished. If a pale, even result is important, ash is the lower-risk choice. If you like visible variation, hickory can make a distinctive top. Avoid choosing hickory based only on one attractive board in a showroom; ask to see the whole bundle or buy enough stock to select and match parts.

Strength, dents, and bench use

Hickory is notably harder than ash, so it generally resists dents better from dropped tools, belt buckles, and routine knocks. That advantage is most useful for a shop bench or a seat that sees rough daily use. It does not make hickory immune to scratches, nor does it compensate for a thin top or weak joints.

Ash is still a tough, practical hardwood. For an indoor entry bench or occasional-use seat, it is often more than durable enough. If the bench will be used for heavy work, a thicker top, well-supported span, and sound fastening will do more for long-term performance than choosing the hardest available board.

Both species are best kept out of prolonged wet conditions unless the entire design and finish are intended for outdoor exposure. A clear coating slows moisture exchange; it does not make wood waterproof. Seal end grain carefully, and expect seasonal movement as indoor humidity changes.

What to buy and inspect

For a top, look for straight, dry boards with no loose knots, checks, or twists. A moisture content around 6–8% is typical for wood used in many heated indoor spaces, though the right target depends on your local climate. Let the lumber acclimate in the shop before milling, and recheck it after rough cutting if the stock is thick or has been stored in a very different environment.

Hickory can be demanding to machine. Sharp cutters, light passes, and a steady feed help reduce burning and tear-out; drilling pilot holes for screws is sensible. Ash is more forgiving, though it can still splinter across open grain. If you do not have sharp tools or much experience milling hard stock, ash may save time and frustration.

For a clear, durable surface, compare a water-based polyurethane with an oil-based polyurethane. Water-based finishes usually preserve a paler look and dry faster; oil-based finishes add a warmer amber cast and commonly need longer between coats. Follow the label for application conditions and recoat times. Test the finish on offcuts from the actual boards, especially if the hickory has contrasting light and dark areas.

Sanding and finishing without blotches

Flatten the assembled top before final sanding, then work through grits without skipping steps. A practical sequence is 80 or 100 grit for milling marks, then 120, 150, and 180. Stop at 180 for most clear film finishes unless the product instructions say otherwise; sanding much finer can reduce adhesion, and extra-fine sanding may make a surface look burnished and less even.

Vacuum thoroughly between grits. Open-pored ash and hickory can hold dust in the grain, which becomes especially visible under a clear coat. Inspect the surface in raking light, because scratches that disappear in overhead lighting often show after finish is applied. Ease sharp edges slightly—roughly a 1/16-inch roundover is enough for many bench edges—so the finish does not form a thin, fragile film on a knife-sharp corner.

Apply the first coat to an offcut and check for raised grain, color shift, and uneven sheen. Lightly sand between coats only as directed, using a fine abrasive such as 220-grit sanding sheets when the coating is ready. Sanding too early can gum the abrasive; sanding too aggressively can cut through the finish on edges. Build enough coats for the maker’s stated use, and allow the surface to cure before putting the bench into service. “Dry to touch” is not the same as fully cured.

Which one should you choose?

Choose hickory if you want extra dent resistance, enjoy strong color variation, and can work carefully with hard stock. Choose ash if you want a lighter, more uniform look and a smoother build with less fight at the machines. For a lightly used indoor bench, ash is often the sensible, cheaper option when it is priced lower locally; there is little benefit in paying extra for hickory’s hardness if the bench will not be abused.

Whichever you pick, buy for the actual boards, not just the species name. Match the grain across the top, test the clear finish on offcuts, and spend time on surface preparation. Those choices will have more effect on the finished bench than the label on the lumber rack.