Stone, Countertops & Engineered Surfaces worked example

Waterjet Consumable Cost at 61% high-pressure duty cycle: a worked example

This worked example runs the waterjet consumable cost numbers for a tougher week than the baseline: 61% high-pressure duty cycle instead of the typical 85%. Estimates abrasive-waterjet consumable cost from cutting hours, the garnet and wear-part rate, and the share of time at full pressure.

The inputs for this scenario

  • Waterjet cutting hours: 40 hr (held at the documented default)
  • Garnet and parts rate: 28 $/hr (held at the documented default)
  • High-pressure duty cycle: 61 % (the input this scenario stresses; the baseline uses 85)
  • Nozzle rebuild cost: 180 $ (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Waterjet consumable $ = cutting hours x garnet and parts rate x duty% + nozzle rebuild.
  • Total waterjet consumable cost works out to 863 $ at these inputs, and this is the headline figure for the scenario.
  • Waterjet consumable cost per unit works out to 21.58 $ / piece at these inputs.
  • Variable waterjet consumable cost works out to 683 $ at these inputs.
  • Fixed waterjet consumable cost adder works out to 180 $ at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where high-pressure duty cycle sits at 85% and the headline result is 1,132 $, this scenario comes in 23.75% below the baseline at 863 $.
  • Use it when setting the waterjet machine-hour rate, quoting intricate cutouts, or comparing garnet suppliers and grades. A result at this level usually justifies acting on the stressed input before touching anything else, because every other figure in the table is downstream of it.

Results at a glance

  • Total waterjet consumable cost: 863 $ (headline result)
  • Waterjet consumable cost per unit: 21.58 $ / piece
  • Variable waterjet consumable cost: 683 $
  • Fixed waterjet consumable cost adder: 180 $

Run it with your numbers

  • To rerun this with your own numbers, open the live Waterjet Consumable Cost calculator, set high-pressure duty cycle to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.