How to Choose Lumber at a Sawmill: 9 Things to Check

Well, getting lumber directly from a sawmill will give you more options compared to buying pre-cut lumber from a store. You get an opportunity to select the kind of wood you want, its size, the quality, cut, and many other attributes. However, with all these options, you have to understand what you see.

Whether you are shopping for hardwood lumber to make furniture or buying dimensional lumber for construction purposes, selecting lumber from a sawmill requires understanding the quality, moisture level, dimensions, and the intended use of the board.

1. Know What Your Project Actually Needs

First of all, make a list to roughly estimate the cuts required before heading to the sawmill. Record the thickness, width, length, and number of pieces required.

Why is making a list necessary?

Let’s take an example: The table will require thicker planks than the shelf. Ordering lumber of the same size for both items can result in wastage.

Your list will also help you know what kind of lumber to purchase – rough, S2S, S3S, or S4S.

2. Choose the Right Wood Species

Well, not all woods provide the same level of hardness, stability, appearance, and price.

Some hardwoods include oak, maple, walnut, and cherry, which are ideal choices for a variety of woodwork projects, while some softwoods include pine and cedar ideal for outdoor woodwork.

So, do not pick a particular species of wood based only on appearance but consider its performance in the surrounding environment.

3. Examine the Boards for Defects

At a sawmill, you have the chance to inspect each board before purchasing it. So, make sure to check for the following:

• Big or loose knots
• Brittle spots and cracks
• Too much warping
• Splitting
• Excessive discoloration
• Wane on the board’s edges
• Twisted boards

In some cases, these imperfections can be positive features that make the board appropriate for your project. Knots can give character to a rustic table top, while an absolutely clear board will be more suitable for cabinets.

4. Check for Bow, Cup, and Twist

Well, a board may look appealing yet hard to work with.

Bow is the curvature along the length of the board, cup is the curvature across the board’s width, and twist means that the edges have different elevations.

However, a little warping will probably disappear when milling the wood, but warping that is too much will limit the amount of usable wood and make it difficult to join boards.

5. Ask About Moisture Content

First and most important, ask about lumber’s moisture content since wood continues to exchange moisture with the surrounding air. Lumber is more likely to shrink, swell, or deform after installation if it is not dried enough.

Therefore, dried and acclimatized lumber is the choice when picking lumber for indoor furniture.

Always ask the sawmill if they provide air‑dried or kiln‑dried lumber and what lumber moisture content level they achieve.

In the end, it is not wise to buy wet lumber just because it is cheaper. During the project, wet lumber will require more work on it.

6. Understand Rough-Sawn Dimensions

Most sawmills sell lumber in rough sizes. So, when they sell Lumber as 4/4,  it will not necessarily be one-inch thick after drying and processing.

When you plan to finish lumber, make sure to leave extra thickness so that you can flatten it later. This is why many woodworkers prefer lumber that is slightly thicker than they need.

It is always important to find out whether the dimensions of lumber are rough, nominal, or finished.

7. Think About Grain and Board Orientation

Well, the manner in which the board was cut off from the log affects how the wood looks, its stability, and its grain pattern.

Therefore, when choosing furniture pieces to be visible in the construction, you should look for the grain and figure of the wood before buying it. Choosing the wood boards together ensures consistency in appearance of the furniture parts.

In case of structural pieces, suitability comes first before the grain and figure.

8. Calculate How Much Lumber You Need

Be careful not to guess your cost from the number of boards since wood is measured in board feet and board feet include thickness, width, and length.

The Board Feet Calculator helps you calculate how many board feet of wood you need for your project. It also makes comparing board feet of sizes straightforward.

However, if your lumber supplier sells wood by length, the Linear Foot Calculator will be more helpful. For instance, if you need 40 linear feet of trim with the same width, length measurement will be more useful.

In case of logs before milling, the Log Board Feet Calculator can help you estimate how many board feet of lumber a log will produce.

9. Account for Waste and Future Milling

Remember, when using rough lumber, don’t purchase the exact amount of finished lumber that you have specified in your cut list. Defects, saw marks, jointing, finishing, and poor board layouts can cause you material loss.

For a simple project, you must use a reasonable allowance for waste and add a little more lumber in your cut list when purchasing very figured, irregular, or poor quality boards.

Let’s understand with an example: if your project needs 80 board feet, buying just 80 board feet of rough lumber may result in a material shortage after milling.

What Should You Ask the Sawmill?

Make sure you know these details before you buy wood:

• The type of wood you are buying
• Green, air-dried, or kiln‑dried
• Approximate dimensions
• Grade of wood
• How long the wood has been dried
• Whether the price is by board or by linear foot
• The expected amount of wood wasted when processing?

In conclusion, it’s always a good idea to think about the long-term costs of something before you buy it, because what seems cheap at first can end up costing you a lot more in the end.

Final Remarks: How to Choose Lumber

In conclusion, lumber selection at the sawmill is not the search for perfection, but rather the search for boards which suit the needs of your project. Examine moisture content, dimensions, defects, grain pattern, and yield before buying.

Some simple checking done in the sawmill will save you much time, wood, and money when you get to your work site.

Frequently Asked Questions (FAQs)

How do I select lumber at a sawmill for woodworking?

While learning about how to select lumber at a sawmill for woodworking, you will need to examine the type of wood, moisture content, grain, defects, dimensions, and amount of workable material. Lumber will be selected based on the end product and not on looks.

What do I need to check when selecting rough lumber at a sawmill?

While learning about what to check when selecting rough lumber at a sawmill, one will need to examine for excessive bow, cup, twist, cracks, knots, rot, and other defects. One will also need to establish if the lumber is dry enough for its use.

How much lumber do I need to purchase from a sawmill?

To know how much lumber to purchase from a sawmill for woodworking, you need to begin by examining your cut list and calculating board feet and allowances. Rough or irregular lumber will need more allowance than prepared lumber.