Additive Manufacturing worked example

Print Scrap Rate at 4.6% target scrap rate: a worked example

Push target scrap rate up to 4.6% and the picture changes. This example computes every intermediate figure at that operating point. a quality manager needs to monitor additive scrap by material, printer, or product family

The inputs for this scenario

  • Scrapped printed parts: 9 parts (unchanged)
  • Total produced parts: 210 parts (unchanged)
  • Target scrap rate: 4.6 % (raised for this scenario; the documented default is 4)

Working through the calculation

  • Applying the documented formula (Print scrap rate = scrapped printed parts รท total produced parts) to the inputs above produces each figure below.
  • At this operating point the engine returns 4.29 % for print scrap rate, the number this scenario is built around.
  • At this operating point the engine returns 0.31 points for gap to target.
  • At this operating point the engine returns 9 parts for scrapped printed parts.
  • At this operating point the engine returns 210 parts for total produced parts.

How this compares with the baseline

  • Against the tool's baseline example, where target scrap rate sits at 4% and the headline result is 4.29 %, this scenario lands almost exactly on the baseline at 4.29 %.
  • It divides scrapped printed parts by total produced parts to give a print scrap rate, then compares it to your target scrap rate to show the gap. The value of this scenario is the size of the gap it exposes: that gap, priced out over a year, is the budget you can justify spending to close it.

Results at a glance

  • Print scrap rate: 4.29 % (headline result)
  • Gap to target: 0.31 points
  • Scrapped printed parts: 9 parts
  • Total produced parts: 210 parts

Run it with your numbers

  • Every input above is editable in the live Print Scrap Rate calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.