Foundry & Forging calculator

Fettling Labor Load Calculator

Estimate fettling labor hours for cutoff, chipping, grinding, riser removal, flash removal, and final dressing. Use it when finishing labor must be scheduled or quoted for castings and forgings.

What this calculator does

  • Estimate fettling labor hours for cutoff, chipping, grinding, riser removal, flash removal, and final dressing.
  • Use it when finishing labor must be scheduled or quoted for castings and forgings.
  • Plans fettling labor load.

Formula used

  • Base fettling labor load = castings or forgings needing fettling ÷ fettling completion rate
  • Required fettling labor load = base time × allowance factor

Inputs explained

  • Castings or forgings needing fettling: Enter pieces requiring fettling, grinding, cutoff, flash removal, or dressing.
  • Fettling completion rate: Use actual parts finished per hour for the same alloy, geometry, riser size, and worker/tool setup.
  • Fettling allowance: Add allowance for tool changes, inspection holds, ergonomic breaks, handling, rework, and difficult geometry.

How to use the result

  • Use for finishing-room staffing and quotes.
  • This calculator is an estimating tool. Results can change with alloy chemistry, furnace practice, ladle losses, mold design, gating and riser layout, core condition, pattern allowance, die temperature, press condition, inspection criteria, rework rules, energy rates, labor standards, and actual shop performance. Validate safety-critical, metallurgical, tooling, press-capacity, and customer-spec decisions with qualified engineering, metallurgy, OEM data, and the applicable control plan.

Common questions

  • What information do I need before using the Fettling Labor Load? Use part count, completion rate, and allowance from a comparable finishing job.
  • What does the result mean? It estimates base and adjusted fettling labor hours.
  • When is the result only an estimate? This calculator is an estimating tool. Results can change with alloy chemistry, furnace practice, ladle losses, mold design, gating and riser layout, core condition, pattern allowance, die temperature, press condition, inspection criteria, rework rules, energy rates, labor standards, and actual shop performance. Validate safety-critical, metallurgical, tooling, press-capacity, and customer-spec decisions with qualified engineering, metallurgy, OEM data, and the applicable control plan.
  • What decision can I make from the result? Use it to schedule grinders, quote finishing cost, and identify parts with excessive riser/flash removal.

Last reviewed 2026-05-12.