8-Foot vs 10-Foot Boards: Compare the Whole Cut List
Compare 8-foot, 10-foot, and mixed board purchases with a verified cut list, usable lengths, saw kerf, offcuts, and clearly labeled sample prices.
For the ten-part list below, five 8-foot boards cost $60 and four 10-foot boards cost $62. Buying two of each length brings the stock cost down to $55. These are hypothetical US-dollar prices, before tax and delivery, for otherwise equivalent stock.
The useful comparison is the purchase that produces every required part. Run the same list through the board cut optimizer, then compare the layouts, prices, and usable leftovers.
Start with one finished cut list
Assume all parts use the same species, grade, thickness, width, and profile, with square crosscuts.
The list contains 424 inches of finished parts. The example assumes the boards are already suitable for final-length cutting, with no intervening defects or additional joinery or milling allowances.
For this worked case, suppose the boards measure exactly 96 or 120 inches before cleanup. Preparing both ends removes a combined 1/2 inch per board, including the trim-cut kerfs. The usable lengths are therefore 95.5 and 119.5 inches. Enter those usable lengths in the calculator; do not deduct the end loss again.
Use a 0.125-inch planning kerf here. This is an example input, not a universal blade specification. Manufacturers distinguish cutting width from plate thickness: Diablo's D0760A specifications list a 0.059-inch kerf and a 0.040-inch plate. Use the value appropriate to your actual setup; the kerf measurement guide explains the check.
| Part | Finished length | Quantity |
|---|---|---|
| Long pieces | 58 in | 4 |
| Medium pieces | 37 in | 4 |
| Short pieces | 22 in | 2 |
The all-8-foot purchase
Enter 95.5 inches of usable stock, 0.125-inch kerf, and a hypothetical price of $12 per board. The verified calculator result uses five boards.
Each long-and-medium pair spans 95.125 inches after its internal kerf. Separating the terminal remainder consumes another 0.125 inch, leaving 0.25 inch. The short-piece board leaves 51.25 inches after both cuts.
The purchase costs $60. Finished-part yield is 88.8% of the total usable stock length. Terminal remnants total 52.25 inches, but almost all of that length sits in one useful-sized piece. The four quarter-inch remnants are arithmetic leftovers, not a recommendation to save tiny scraps.
- Boards 1–4: 58 + 37 inches on each board; 0.25-inch terminal remainder each.
- Board 5: 22 + 22 inches; 51.25-inch terminal remainder.
The all-10-foot purchase
Change usable stock to 119.5 inches and the hypothetical price to $15.50. Keep the parts and kerf unchanged. The verified result uses four boards.
The purchase costs $62, with 88.7% finished-part yield and 52.75 inches of terminal remnants. Those remainder lengths already include the additional cut needed to separate them.
Both purchases contain 480 nominal inches of stock. Four longer boards save one board to handle, but do not reduce purchased length in this example. Their slightly different usable totals come from preparing four sets of ends instead of five.
- Boards 1–2: 58 + 58 inches; 3.25-inch terminal remainder each.
- Board 3: 37 + 37 + 37 inches; 8.125-inch remainder.
- Board 4: 37 + 22 + 22 inches; 38.125-inch remainder.
Find the price crossover
For these all-one-length plans, four 10-foot boards beat five 8-foot boards when the price of one 10-foot board is less than 1.25 times the price of one 8-foot board.
With 8-foot boards at $12, the 10-foot option must be below $15 to be cheaper; at $15 the stock costs tie. Add any differing delivery or handling charges before choosing. This crossover applies only while the cut list still needs five shorter boards or four longer ones.
4 × price of a 10-foot board < 5 × price of an 8-foot boardprice of a 10-foot board < 1.25 × price of an 8-foot boardHypothetical USD prices before tax and delivery. Recalculate if the required board counts change.
Check a mixed purchase too
A manually checked mixed-length layout improves this example: put 58 + 37 + 22 inches on each of two 10-foot boards, and 58 + 37 inches on each of two 8-foot boards.
Each longer board uses 117.25 inches through its last finished part, including two internal kerfs. After the terminal cut, it leaves 2.125 inches. Each shorter board leaves 0.25 inch.
The mixed purchase costs $55 and contains 432 nominal inches, or 430 usable inches after end preparation. Its finished-part yield is 98.6%, with 4.75 inches of total terminal remnants.
That saves $5 against the all-8-foot purchase and $7 against the all-10-foot purchase. It also gives up the larger leftovers. A planned use for a 51.25-inch offcut might influence your decision, but do not count an unspecified future project as guaranteed savings.
Download the worked board-purchase comparison (CSV). All sample stock costs use hypothetical USD prices before tax and delivery.
| Purchase | Nominal inches | Usable inches | Part yield | Terminal remnants | Sample stock cost |
|---|---|---|---|---|---|
| Five 8-foot boards | 480 | 477.5 | 88.8% | 52.25 in | $60 |
| Four 10-foot boards | 480 | 478 | 88.7% | 52.75 in | $62 |
| Two of each length | 432 | 430 | 98.6% | 4.75 in | $55 |
Why these counts are proven for this example
SawNest's methodology describes a best-fit-decreasing heuristic. Its general result is a practical plan, not a universal optimality proof. This small example has separate checks.
The $55 mixed purchase is consequently the lowest stock cost under the stated assumptions.
- Four shorter boards contain only 382 usable inches, less than the 424 finished inches required. The feasible five-board layout therefore reaches the minimum all-8-foot count.
- Three longer boards contain only 358.5 usable inches. The feasible four-board layout reaches the minimum all-10-foot count.
- Any three-board purchase is too short. Four boards containing at most one 10-foot board provide at most 406 usable inches. A four-board purchase therefore needs at least two longer boards. Two of each cost $55 and fit. Five or more boards cost at least $60 at these prices.
Recheck before buying
The current board optimizer accepts one stock length per run. The mixed purchase above is a manually verified allocation, not an automatic mixed-stock search. To check it with the tool, run two of each part length against 119.5-inch stock, then the remaining two 58-inch and two 37-inch parts against 95.5-inch stock. The tool may group those assigned parts differently while retaining the same counts.
Measure the actual boards and inspect defects before relying on these tight fits. If you still need to mill the wood, plan appropriate rough-size blanks first; Woodcraft's cut-list guidance separates that allowance from finished dimensions. Verify transport, support, and safe operations using your tool manufacturer's instructions. A material layout is not a cutting procedure.