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THE FEUTEX TOOLKIT

Turning Geometric Surface Roughness

Compare approximate Ra and peak-to-valley feed marks for a round tool nose.

Manufacturing workspace● Runs in your browser
01 Your input
02 Your result
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FormulaRa≈f²/(32r); peak-to-valley≈f²/(8r).
Sources and model references

Worked example

Inputs

Feed per revolution
0.2 mm/rev
Tool nose radius
0.8 mm

Expected results

Approximate geometric Ra
1.5625 µm
Approximate peak-to-valley height
6.25 µm

Load the example in the workspace to reproduce these results. Display rounding does not change the underlying calculation.

How to use this tool

  1. Enter every input in the labeled units; use measured or independently specified properties.
  2. Check the stated model assumptions before calculating.
  3. Interpret the output as a model estimate and verify it independently for the intended application.

Try this example

{
  "feed": 0.2,
  "radius": 0.8
}

Accuracy and scope

Ideal round nose with small feed/radius; excludes material tearing, built-up edge, wear and vibration. Educational engineering estimate only; not structural or safety certification, equipment selection, or operating recommendations.

Is my data uploaded?

This tool runs locally in your browser. Input and output are not sent to a processing server. Copy or download your result before leaving the page.