Volex Labs / Forge / Box section tube generator — text to CAD.

Box section tube generator — text to CAD.

Describe the tube — outside width, outside height, wall thickness and length — and Volex Forge builds the hollow section as one solid and returns a STEP, STL or DXF.

Square and rectangular both work from the same sentence. The bore is cut right through, so the part is genuinely hollow and weighs what the section weighs — not a solid bar with the right outline.

Generate this part — from £2.99 → How Forge works Already have a file? Check it free

Free to try Parts from £2.99 STEP · STL · DXF Verified before download

What you get

Rectangular and square hollow sections from one prompt
Outside sizes, wall thickness and length all parametric
Genuinely hollow — the bore runs the full length
Wall checked against both outside dimensions before it builds
STEP, STL or DXF, checked before download

From a plain-English prompt

80 × 40 × 3 RHS, 500 mmExample — measured from the part this prompt builds

A rectangular box section tube 80x40x3, 500mm long

Parameter	Value
Outside width	80.0 mm
Outside height	40.0 mm
Wall thickness	3.0 mm
Length	500.0 mm
Bore	74.0 × 34.0 mm
Export	STEP / STL / DXF

Every part is checked before you download it — geometry, and where relevant FEA against textbook theory. See the verification report.

Frequently asked

RHS or SHS?

Both. Give two different outside dimensions for a rectangular hollow section, or the same number twice for a square one.

Are the corners radiused?

No — the corners are square, inside and out. A hot-rolled RHS has a corner radius of roughly 1.5–2.5 times the wall; if that matters for your fit, model it in afterwards or say so in the prompt.

Is it hollow all the way through?

Yes. The bore is cut the full length and the measured volume reflects it, so the mass you get from the STEP is the section mass, not a solid bar.

Which format should I use?

STEP for CAD and CNC, STL for 3D printing, DXF for the 2D outline.

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Need a hollow section that weighs what it should?

Free to try · parts from £2.99 · STEP, STL or DXF · every part verified before download.

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