How does the cut list optimiser work?

The optimiser uses a "first-fit decreasing" algorithm: it sorts all pieces from longest to shortest, then tries to fit each piece onto an existing stock length before opening a new one. This approach typically achieves near-optimal results for most woodworking projects.

What stock lengths are available in the UK?

Common UK timber lengths are 1.8m, 2.4m, 3.0m, 3.6m, and 4.8m. Some species and profiles come in other lengths. Choose the stock length that best matches your longest piece to minimise waste. You can also mix stock lengths by running the optimiser separately.

How much waste should I expect from a cut list?

With good optimisation, aim for less than 15% waste from linear cuts. Simple projects with few different lengths can achieve under 10%. Projects with many different lengths tend to produce more waste (20-30%). Always save large offcuts for future use.

Should I include saw kerf in my cut list?

Yes, always include saw kerf (typically 3mm per cut). This calculator adds kerf to each piece length automatically. Forgetting kerf accumulates errors: 10 cuts x 3mm = 30mm, which can mean running short on the last piece.

WoodCalcs

Cut List Optimiser — Minimise Timber Waste

Optimise cutting patterns to maximise yield from standard boards.

Stock Length

Length of timber you are buying

Saw Kerf

Cut List (up to 4 different lengths)

Cut 1 Length

Cut 1 Quantity

Cut 2 Length

Cut 2 Quantity

Cut 3 Length

Cut 3 Quantity

Cut 4 Length

Cut 4 Quantity

Price per Stock Length (optional)

How We Calculate This

This optimiser uses a first-fit decreasing bin-packing algorithm to minimise the number of stock pieces needed for your cut list.

Algorithm

1. All pieces are sorted from longest to shortest.

2. Each piece (plus kerf) is placed onto the first stock length with enough remaining space.

3. If no existing stock has enough room, a new stock length is started.

Efficiency = Total cut length / Total stock length x 100

Frequently Asked Questions

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Last updated: February 2026

All calculations are estimates. Always verify measurements and material quantities before cutting or purchasing.