Identify wood by end grain

Identify wood by end grain by reading the cut end of the board. Growth rings, pores, and rays on that face separate woods that look the same once the face is stained or worn. A sharp phone photo of a fresh cut records the group. It does not, by itself, prove a single species.

Download Wood Identifier : Woodio on the App Store when you want a ranked list from that photo. Use the checks below on the cut before you trust a match. Product details are on the Wood Identifier : Woodio home page.

Why end grain matters

The face of a board shows color and figure. Stain, sun, and wear change both. End grain is the cross-section you see at the end of a plank or on a fresh cut through a firewood round. Growth rings are the bands. Pores are the small holes in hardwoods, the vessels that carried water in the tree. Rays are the lines that run from the bark side toward the center.

Those features stay visible on a clean cut after the face has been finished. End grain wood identification is the check to use when a stained oak and a stained ash look the same from above.

Hardwoods have pores. Softwoods do not. A ring of large pores at the start of each growth ring means a ring-porous hardwood such as oak, ash, elm, or hickory. Small pores of similar size across the whole ring are the pattern in maple, birch, and cherry. Walnut pores are larger in the earlywood and smaller toward the latewood, without the sharp band you see in oak. Softwood end grain shows no pores. Some softwoods show resin canals as scattered dots.

How to photograph end grain with a phone

A phone end-grain ID fails when the cut is rough, sanded shut, or out of focus. Prepare the wood, then the camera.

• Pare a thin slice with a sharp blade, or find a fresh saw cut. Sanding packs dust into the pores and hides them.
• Wipe the cut. A drop of water darkens the surface and makes the pores easier to see.
• Use daylight from a window. Hold the phone parallel to the cut so the pores sit in one plane of focus. Tap the wood to lock focus.
• If the phone cannot focus that close, step back and crop the frame later.
• Rake the light across the cut from a low angle so each pore throws a small shadow.
• Put a coin in one frame when you want a scale for pore size.

Take a face photo as well. The identify wood by picture guide covers face grain, lighting, and what a photo can and cannot settle. This page stays on the cut end.

Reading rings, pores, rays (simple)

Read the cut in this order.

Rings. Each growth ring has earlywood, formed in spring, and latewood, formed later in the season. In a ring-porous hardwood the large pores sit in the earlywood. In a softwood the latewood is often the darker band.

Pores. Note whether the large holes form a band, fade across the ring, or stay small and even. A sharp phone crop is enough to see the large pores in oak and ash. A hand lens helps with the small ones.

Rays. Look for lines that cross the rings, from the outside of the log toward the center. Oak has some rays wide enough to see without a lens. They look like pale streaks on the cut end. Ash, maple, and most other common hardwoods have only narrow rays.

Wide rays on a ring of large pores point to oak. Narrow rays on that same ring point away from oak, often toward ash. The oak vs ash guide is the side-by-side for that pair.

Common lookalikes

Ring-porous boards get sold under the wrong name because stain can make the faces match. Oak and ash are the common pair. Hickory is usually heavier than ash and still has narrow rays. Elm often shows latewood pores in wavy bands, and the grain interlocks, so the wood is harder to split.

Maple, birch, and cherry look similar on the cut end because the pores stay small across the ring. Color, weight, and smell on a fresh surface separate them more than pore size does. The end grain names the group. It does not finish the species call inside that group.

Pine and other softwoods have no pores. Some pines show resin canals. Many cedars do not, and a fresh cedar face has a distinct smell. Treat that as a group check, then confirm with bark, smell, and weight.

If the wide rays have already told you the board is oak, red oak vs white oak is the next comparison. White oak pores are often plugged. Red oak pores are often open. That split is a different question from oak vs ash. See how to identify red oak and how to identify white oak for those two.

When to compare oak vs ash

Compare oak vs ash when the cut shows a band of large earlywood pores. Find the rays before you pay an oak price. Wide rays mean oak. Narrow rays mean you should read the ash pattern in the oak vs ash guide.

Use the app when the cut is too rough to read, when finish covers the face, or when the pores only tell you the wood is a diffuse-porous hardwood and you want a short list of lookalikes. The photo ranks likely species. It does not measure hardness, and it does not replace the ray check on a clean cut.

Wood Identifier : Woodio is free to download and free to try. Species identification requires Premium, sold as a weekly or a yearly subscription. You can cancel anytime. A free trial is included only when the store is offering one.

1. Download Wood Identifier : Woodio on the App Store.
2. Photograph the pared end grain, then the face, using the steps above.
3. Read the top matches and the lookalikes before you buy, burn, or mill the wood.

Start at the Wood Identifier : Woodio home page for the subscription details. For the rest of the photo set, use identify wood by picture.