Fabrication

Sheet Metal Bend Radius Rules for Cleaner Quotes

Design notes for bend radius, flange height, hole distance, and relief features in fabricated parts.

2026-02-04 / 6 min read

Sheet Metal Bend Radius Rules for Cleaner Quotes

Design notes for bend radius, flange height, hole distance, and relief features in fabricated parts.

Use practical inside radiiKeep holes away from bendsCall out hardware clearly

Use practical inside radii

A good starting point is an inside bend radius close to the material thickness. Smaller radii may need process review.

Keep holes away from bends

Hole distortion increases when features sit too close to a bend line. Add relief or move the feature when possible.

Call out hardware clearly

For self-clinching hardware, include the hardware type, installation side, and any pull-out or torque expectations.

Manufacturing notes

Get practical design and sourcing updates.

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