A practical planning sequence for small sawmills, from choosing an end use to preparing stacks, drying capacity and storage By Nate Speelman of Stumps Custom Wood
Stumps Custom Wood-A log is on the mill, the blade is ready, and the grain appearing beneath the bark makes the next cut tempting. Before carrying on, another job needs settling: where will those boards go when they come off the bed?
For a small sawmill, that question reaches beyond finding an empty patch of ground. The boards need a purpose, a way to remain identifiable and a suitable route through drying. They also need somewhere to go afterwards. Planning those steps before sawing helps keep a promising log from becoming a stack that nobody can confidently allocate to a job.
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At Stumps Custom Wood in Shelby, Ohio, we operate an in-house sawmill and an iDry kiln and make live-edge wood products. Working with both the raw material and the finished product gives me a useful perspective: decisions at the mill should account for the work still ahead of the timber.
Begin with the finished use
Before choosing a cutting pattern, identify the wood’s most likely use. A batch intended for shelves presents different requirements from a pair of wide slabs reserved for a table. Even without a named customer, a realistic product category gives cutting decisions some direction.
Write down the required finished dimensions, then consider the allowance needed for shrinkage, flattening, machining and trimming. No single extra thickness suits every species or product. A wide board that moves during drying may require removing more material to flatten than a narrower component. Cutting to the finished dimension leaves no room for that work.
Decide which features are worth keeping. A natural edge may be central to one project and waste on another. Boards from the same log may have more value kept together for matching grain or colour. Mark that intention while the relationship between the pieces is still obvious.
This does not mean forcing every log into a fixed order. The wood may reveal a better opportunity as it opens. It means making a conscious decision when the plan changes and updating the destination for the resulting boards.
Match the cutting day to the space available
Before a milling session, look at the whole route: removal from the mill, stacking, any holding period, kiln loading and storage after drying. An empty kiln chamber is only one part of the available capacity.
Measure the usable stacking area and check the clearances and package dimensions your handling and drying equipment require. Leave access to move and check the timber. A stack that fits neatly against another pile may become awkward to reach when it is the next one needed.
Decide who will label and stack the boards as they are produced. Have the supports, stickers, marking materials and any appropriate end coating ready. If one person is doing everything, allow time for those tasks within the cutting day.
The practical limit is how much timber you can handle and prepare properly. Once that capacity is committed, starting another log can create extra handling and an unplanned drying delay.
Give each batch an identity
A simple identification system is enough if it survives handling and stays with the wood. Assign a batch or log reference and record the species, sawing date, rough dimensions, intended use and current location. If the species is uncertain, record that uncertainty instead of turning a guess into a permanent label.
For individual slabs or matching boards, add a piece number and a quick photograph. Note defects that may affect the usable length or width. Make customer reservations visible in the record so a desirable board doesn’t accidentally get allocated twice.
For example, a record might read: “Batch 17, walnut, sawn 8 November, shelf stock, rack B, drying pending.” A photograph and measured dimensions can sit beside that entry.
Choose marking materials and positions that will not spoil the intended finished surface. Keep a second record in a notebook or shared file, then update it whenever a batch moves. The useful record is the one another person can understand without needing the mill operator beside them.
Prepare the stack before the boards arrive
For air drying, prepare a stable, level foundation with clearance beneath the timber. Sort the boards into sensible groups, particularly by thickness and species. Mixing thicknesses within a layer can leave some pieces poorly supported; mixing batches with very different drying behaviour makes later decisions harder.
Stickers, the narrow spacers between layers, should be dry and consistent in thickness. Align them vertically through the stack and over the supports, with proper support at board ends. Their dimensions and spacing should suit the timber and drying method. Use the relevant drying guidance rather than copying a spacing from an unrelated stack.
Provide suitable protection from rain and excessive direct sun while preserving the airflow required for the chosen method. Do not treat an improvised, tightly wrapped cover as a substitute for a planned drying arrangement.
Consider end protection before cutting. Where end coating is appropriate, have a suitable product ready and apply it promptly, following its instructions. It can help reduce end checking; it cannot repair splits that are already there.
Stack promptly as boards come off the mill. A pile awaiting attention is already exposed to drying conditions, even though nobody has formally started the drying process.
Choose a drying route for that timber
Species, thickness, starting moisture content and equipment all matter when choosing how to dry a batch. Outdoor conditions also affect air drying. A familiar calendar rule cannot tell you whether a particular stack is ready for its intended use.
If another business will dry the wood, contact it before sawing. Confirm the rough dimensions it accepts, how to prepare the load, whether air drying is required first, and when it can receive the batch. Agree on the final moisture requirements for the product and destination.
For an in-house kiln, plan around the equipment and load instructions. For our iDry, as with any kiln, read the operating guidance alongside the load details. Loading arrangement, species, thickness and moisture checks all belong in the drying plan.
When considering a mixed load, establish that the materials are compatible rather than combining them simply to fill the chamber. A slower or more difficult batch can change how you need to manage the load.
Decide how progress will be measured before the stack is built. Leave access to the pieces or samples needed for checks and keep those results with the batch record.
Make room for the dry timber as well
The next destination should be ready before the kiln is unloaded. Plan a protected storage position where the batch remains supported, identifiable and accessible for machining or sale.
Drying does not permanently fix wood’s moisture content. Timber continues to respond to the surrounding conditions, so storage and the eventual service environment matter. Select the moisture target for the intended use and check suitability again before manufacture.
Follow the moisture-meter manufacturer’s instructions for species settings, temperature corrections and measuring depth. A convenient surface reading on a thick slab may not reflect the condition deeper inside. Where that difference matters, use an appropriate sampling or measurement method.
Record the checks and keep the batch status clear. “Sawn”, “drying” and “checked for the next operation” describe different stages. This gives the person planning production something more useful than a rough recollection of how long the wood has been in the yard.
A short check before the first cut
Before starting, check that you can answer six questions:
- What is the intended use, and what rough dimensions will leave enough material for the finished job?
- Which pieces need to stay together, and how will you identify them?
- Is the stacking position ready, with suitable supports, stickers and weather protection?
- Who will move, mark and stack the timber as it comes off the mill?
- What drying route is planned, and has the equipment or service provider’s loading guidance been checked?
- How will moisture be assessed, and where will the wood go after drying?
These questions can live on a single sheet beside the cutting list. They do not require an elaborate inventory system, but they do need answers that match the day’s timber and the capacity actually available.
The aim is to carry the value revealed at the sawmill through to usable wood. Before the blade enters the log, give the boards a destination and make sure that destination is ready.
About the author
Nate Speelman owns Stumps Custom Wood in Shelby, Ohio. His business operates an in-house sawmill and an iDry kiln, producing live-edge wood products and custom woodworking for customers across the United States.
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