How to Read a Cutting Diagram
A cutting diagram is the bridge between optimization software and the person at the saw. It is a scaled map of each sheet showing where every part goes. Reading it correctly is the difference between parts that fit and an expensive pile of scrap.
Anatomy of a cutting diagram
- Sheet outline: the full stock panel, drawn to scale.
- Parts: rectangles positioned where they will be cut.
- Labels: each part’s name or ID and its dimensions.
- Offcuts: leftover areas, often shaded, that may be reusable.
- Sheet number: which physical sheet this diagram represents.
Reading dimensions and orientation
Each part shows its width and length. If the material is grain-directional, the diagram indicates orientation so you align the grain correctly. Parts that were allowed to rotate are placed in whichever orientation saved material.
Following the cut sequence
On a panel saw, work from full-length cuts inward: rip the sheet into strips first, then cross-cut each strip into parts. The diagram’s arrangement is designed so this sequence is possible. Cut the largest divisions before the small detail cuts.
Using offcuts
Shaded leftover areas are your reusable offcuts. Label and store the larger ones — a tool like CutList Machine reports their sizes so you can feed them back into future jobs.
Frequently asked questions
What do the numbers on each part mean?
They are the part dimensions (width × length) and often a part name or ID that matches your cut list, so you can confirm you cut the right piece.
Why are some areas shaded?
Shaded regions are offcuts — leftover material not assigned to any part. Larger offcuts are worth keeping for future small parts.
Put this into practice
Plan tighter layouts and cut less waste with the free CutList Machine optimizer.
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