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Engineering · Calculator

Stock allowance calculator.

Illustrative per-side stock allowance from rule-of-thumb factors. This does not establish a purchase size: verify stock tolerance, scale, distortion, workholding, datum cleanup and process sequence before ordering material.

Inputs

Recommended stock

Allowance per side
—
Total stock dimension
—
(nominal + 2× per-side allowance)
Surface scale removal —
Finish-pass allowance —
Heat-treat distortion —
Send these numbers to a quote →

Per-side allowance for a single feature. For deep pockets, internal walls, or unusual aspect ratios, increase by 25–50%. For 0.0001″-class final tolerance, add another 0.001″ per side for a precision finish pass.

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