How to calculate cost per part in laser sheet cutting

Assess sheet utilisation, cycle time, gas, handling and secondary operations when comparing laser cutting equipment.

A faster laser cutting machine does not automatically deliver the lowest cost on every job. Nesting, hole count, batch size and secondary operations all affect the result. Instead of converting catalogue speed directly into a production cost, build a comparison around representative work from your own order history.

Calculate cost per accepted component

Divide the total batch cost by the number of accepted parts. Using all produced parts when some are rejected or reworked understates the actual cost. Include material, machine time, assist gas, labour, consumables and necessary secondary operations. Document the contents of your machine-hour rate so that expenses such as energy or maintenance are not counted twice.

Evaluate nesting and reusable remnants

Different layouts can consume different amounts of sheet for the same components. Consider sheet dimensions, orientation requirements, edge allowances and remnants that can realistically be used later. Treating every empty area as equally valuable scrap is misleading, but assuming every remnant will be reused is also optimistic. Track actual reuse rather than theoretical availability.

Look beyond contour length

A component with many holes and starting points creates a different cycle from a simple part with similar external dimensions. File preparation, piercing, loading, unloading and sorting also contribute to production time. Compare proposals using the same drawing, material, thickness, batch quantity and quality target. Unmeasured speed assumptions should not be treated as guaranteed output.

Include work after cutting

Deburring, surface preparation, inspection before bending and packing vary by order. A shorter cutting cycle can lose its advantage if additional finishing is required. Continue the trial assessment until the part is ready for the next operation. Request configuration-specific information for gas consumption and consumables rather than using a general estimate as a confirmed production figure.

Build a comparison package

• Current drawings for three frequently manufactured components.
• Material grade, thickness, sheet dimensions and batch size.
• Dimensional and edge-quality acceptance criteria.
• Existing cycle times, rework records and remnant reuse information.

Review laser cutting systems and send a representative job package to BİEM LASER. This gives the equipment discussion a practical basis and helps connect the proposed configuration to your actual production needs.