Plating, Anodizing & Surface Treatment calculator
Rework Cost Calculator
Rework Cost tells a finishing shop what it truly costs to strip and re-run parts that failed thickness, coverage, adhesion or color spec on the first pass. Line supervisors, quality engineers and estimators in plating, anodizing and coating shops use it because a rejected rack is not just scrap value lost — it is strip-bath chemistry, re-racking labor, a second pass through the tank line, and re-inspection. Getting this number right keeps rework off the hidden-cost list and forces the question of whether re-finishing or scrapping is cheaper. It also feeds cost-of-quality reporting that justifies process fixes like better masking or bath maintenance.
What this calculator does
- Estimate finishing rework cost from parts re-finished, per-part rework rate, the salvageable share, and flat strip-bath or inspection adders.
- Use it when a plating or anodizing lot fails inspection and you need to price stripping and re-running the affected parts.
- It computes the total dollar cost to strip and re-finish a batch of nonconforming plated or anodized parts, plus the effective cost per salvaged part.
Formula used
- Rework cost = parts x rework cost per part x salvageable share% + strip-bath and inspection adder
- Cost per salvaged part = rework cost / parts stripped and re-finished
Inputs explained
- Parts stripped and re-finished:
- Rework cost per part:
- Salvageable share:
- Strip-bath and inspection adder:
How to use the result
- Use it after inspection rejects a rack or lot and you need to decide between re-finishing and scrapping, or to book cost-of-quality for a defect trend.
- It assumes a flat rework cost per part and a fixed strip/inspection adder; complex defects with variable strip times or multi-layer re-builds will cost more than a single averaged rate implies.
Current U.S. benchmarks
- The producer price index for industrial chemicals stands at 344.336 (BLS, May 2026), up 16.1% from a year earlier. Quotes priced off last quarter's material cost miss this move.
- The U.S. has 14,543 chemical manufacturing establishments employing about 911,245 workers (Census County Business Patterns, 2023).
Common questions
- How do you calculate plating rework cost? Multiply the number of parts by the rework cost per part and by the salvageable share, then add the fixed strip-bath and inspection adder. For 40 parts at $3.75 each with an 85% salvage share plus a $90 adder, that is 40 x 3.75 x 0.85 + 90 = $217.50 total.
- What is the cost per salvaged part in this example? Divide total rework cost by parts stripped and re-finished: $217.50 / 40 = $5.44 per piece. That is higher than the $3.75 per-part rework rate because the fixed adder and the salvage yield are spread across the whole lot.
- Why include a salvageable share instead of assuming 100%? Not every stripped part survives re-finishing — some show pitting, base-metal attack or dimensional loss after stripping. The 85% share means you only pay to re-run parts you realistically expect to recover, so the variable cost is 40 x 3.75 x 0.85 = $127.50.
- What goes into the strip-bath and inspection adder? It captures fixed per-batch costs that do not scale with quantity: chemical stripping bath time and consumption, waste treatment, re-racking setup, and the re-inspection or re-test labor. In the example this fixed adder is $90 regardless of lot size.
- When is it cheaper to scrap than to rework? Compare the per-salvaged-part cost against replacement cost. At $5.44 per salvaged piece, if a new blank plus first-pass finishing costs less than that, scrap and re-run new stock instead of stripping.
Last reviewed 2026-05-12.