UV Curing worked example

UV Dose Mapping Spread with coldest grid-point dose of 480 mJ / cm²: a worked example

Here is what the math looks like when conditions slip. We hold every other input steady and drop coldest grid-point dose to 480 mJ / cm², then walk the calculation through step by step. Take grid-pass radiometer readings and reduce them to the dose spread, max-to-min range, and a quick variation-from-average percent.

The inputs for this scenario

  • Coldest grid-point dose (cold spot): 480 mJ / cm² (the input this scenario stresses; the baseline uses 950)
  • Hottest grid-point dose (hot spot): 1,450 mJ / cm² (held at the documented default)
  • Average dose across the grid: 1,180 mJ / cm² (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Dose spread = max − min (mJ/cm²).
  • Variation from average works out to 82.2 mJ / cm² spread at these inputs, and this is the headline figure for the scenario.
  • Dose spread (max − min) works out to 970 mJ / cm² at these inputs.
  • Cold spot dose works out to 480 mJ / cm² at these inputs.
  • Hot spot dose works out to 1,450 mJ / cm² at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where coldest grid-point dose sits at 950 mJ / cm² and the headline result is 42.37 mJ / cm² spread, this scenario comes in 94% above the baseline at 82.2 mJ / cm² spread.
  • The practical read: the gap between this scenario and the baseline is entirely attributable to coldest grid-point dose, so recovering it is worth quantifying in dollars before considering equipment or staffing changes. The result is only as good as your grid; too few points, or points that miss the true cold spot at part edges, will understate the real spread.

Results at a glance

  • Variation from average: 82.2 mJ / cm² spread (headline result)
  • Dose spread (max − min): 970 mJ / cm²
  • Cold spot dose: 480 mJ / cm²
  • Hot spot dose: 1,450 mJ / cm²

Run it with your numbers

  • To rerun this with your own numbers, open the live UV Dose Mapping Spread calculator, set coldest grid-point dose to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.