Composites, Fiberglass & Advanced Materials worked example

Vacuum Bagging Cost at 72% bagging scope applied to the part: a worked example

Here is what the math looks like when conditions slip. We hold every other input steady and drop bagging scope applied to the part to 72%, then walk the calculation through step by step. Estimate vacuum bag consumable cost for composite layup, infusion, or cure operations.

The inputs for this scenario

  • Vacuum bag and consumable coverage area: 620 sq ft (held at the documented default)
  • Bagging consumables cost per square foot: 2.45 $ / sq ft (held at the documented default)
  • Bagging scope applied to the part: 72 % (the input this scenario stresses; the baseline uses 100)
  • Fixed vacuum test, fittings and connectors cost: 180 $ (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Variable vacuum bagging cost = vacuum bag consumable area × bagging consumable cost × bagging scope included.
  • total vacuum bagging cost works out to 1,274 $ at these inputs, and this is the headline figure for the scenario.
  • vacuum bagging cost per part or job works out to 2.05 $ / piece at these inputs.
  • variable vacuum bagging cost works out to 1,094 $ at these inputs.
  • fixed vacuum test and fitting cost works out to 180 $ at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where bagging scope applied to the part sits at 100% and the headline result is 1,699 $, this scenario comes in 25.03% below the baseline at 1,274 $.
  • The practical read: the gap between this scenario and the baseline is entirely attributable to bagging scope applied to the part, so recovering it is worth quantifying in dollars before considering equipment or staffing changes. It assumes a single blended consumable cost per square foot and does not break out film, breather, peel ply, and tape separately or model bag reuse.

Results at a glance

  • total vacuum bagging cost: 1,274 $ (headline result)
  • vacuum bagging cost per part or job: 2.05 $ / piece
  • variable vacuum bagging cost: 1,094 $
  • fixed vacuum test and fitting cost: 180 $

Run it with your numbers

  • To rerun this with your own numbers, open the live Vacuum Bagging Cost calculator, set bagging scope applied to the part to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.