Part nesting — how layout cuts your laser cutting costs
The way parts are arranged on a sheet directly affects material usage and price. We explain nesting principles, common-line cutting, and how design choices reduce scrap.
Nesting is the process of arranging parts on a sheet so that as much material as possible is used and as little scrap as possible is left behind. In laser cutting it is one of the biggest hidden cost factors — a well-arranged order can be significantly cheaper than the same set of parts laid out at random.
Why layout matters
Sheet metal is bought and billed for the full area it occupies. If your parts cover 60% of the sheet and the rest ends up as scrap, you pay for that unused material too. The goal of nesting is to push material utilization as close to 80–90% as possible.
Common-line cutting
When two parts share a common edge, the laser can travel it once instead of twice. This shortens the cut path, saving both time and material. Rectangular parts are best suited to common-line cutting.
What improves material utilization
- Mix different part sizes — small ones fill the gaps
- Rotate parts so they interlock
- Order more pieces at once for a better layout
- Avoid unnecessarily large margins around parts
- Place irregular shapes toward the sheet edges
Spacing between parts
Parts cannot sit right next to each other — the laser needs a minimum gap (usually at least the material thickness) so that heat from the cut does not transfer to the neighboring part and the sheet skeleton stays stable. Too little spacing causes distortion; too much increases scrap.
Conclusion
You do not have to handle nesting manually — our calculator arranges uploaded parts automatically and optimizes sheet utilization. The biggest lever, however, is yours: ordering more pieces and compact shapes at once gives you the lowest price per part.
