PRU-004Heuristic screen

Hole too close to bend

Sheet metal

Scope and limits

Check if round holes are too close to bends (2T+R / 2.5T+R from the tangent line, Atlas Manufacturing); bend-end reliefs are skipped and holes spanning the bend are INFO.

Standards and references

No standards reference is assigned to this check. The scope described above applies.

STEP examples for this check

Sheet metal · CC0-1.0

Hole too close to the bend

Model example

The Ø6 hole leaves only 1 mm of flat material before the bend tangent. Bending can distort this opening.

Dimensions (approx.): 46 × 36 × 60 mm

Expected check result

PRU-004 should warn: the hole edge is 1.0 mm from the bend tangent line, against a published minimum of 8 mm (2 × thickness + inside radius). It is a WARNING because it is below 1 × thickness (2 mm).

Finding expected

PRU-004

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