Which CAD format should I choose?

DXF if the geometry is going into a drawing — AutoCAD, BricsCAD, LibreCAD and most 2D/3D packages read it directly. OBJ if it is going into visualisation or a renderer. STL if it is going to a 3D printer or a mesh tool. All three describe the same box; they differ in what downstream software expects.

What units does the exported file use?

Exactly the units you typed. If the market is imperial, the file contains feet; if metric, metres. Nothing is converted on the way out, deliberately — a silent conversion is the single most common way a CAD import ends up at the wrong scale.

Is the file generated on a server?

No. The geometry is assembled and the file text is written in your browser, then handed to the browser's download mechanism. Nothing is transmitted.

Can I model something other than a box?

Not here. This is a rectangular-prism tool for the elements estimators deal with most — slabs, footings, wall panels, beams. For anything shaped, model it in a CAD package; this exists to produce a correctly scaled starting solid quickly.

What is the volume figure for?

It is the same number a concrete or material calculator would give you for that element, shown live so you can sanity-check the dimensions before exporting. Feed it into the concrete calculator to get bags or cubic yards including waste.

Why does the viewport not appear?

The 3D view needs WebGL. It is disabled on a few locked-down corporate browsers and on very old hardware. The inputs, the volume readout and the exports all still work without it.

Will the DXF open in Revit or SketchUp?

Both import DXF, though Revit treats it as a linked drawing rather than native geometry. SketchUp imports DXF and OBJ directly. Confirm the unit at the import dialog in either case.

Can I export several elements at once?

Not in one file — export each element separately and assemble them in your CAD package, where you can position them relative to each other properly.

Field tool

3D Blueprint & CAD Export

Model a rectangular element — slab, footing, wall panel or beam — then export it as a real CAD file. Drag the model to orbit it.

Screen & modellingWhat it works from
Any deviceWebGL

Timber-framed house under construction with ladders, sawhorses and lumber

Length (ft)Width (ft)Height / thickness (ft)

Solid volume

120.000 ft³

4.444 yd³ — net geometric solid, before any waste allowance.

Export formats

DXF — R12 line geometry, opens in AutoCAD, LibreCAD, QCAD and most jobsite viewers.
OBJ — quad-faced mesh for general 3D packages.
STL — triangulated solid for 3D printing and slicers.

Coordinates are written in the units shown above with no conversion — set the unit when importing.

Scope. This produces accurate geometry for a single rectangular element — it is a drafting aid, not a structural model. It carries no reinforcement, connections, loads or material properties, and is not a BIM deliverable. Anything structural still needs an engineer’s drawing.

How to use the 3D Blueprint & CAD Export

Set your market
The unit shown follows the active market, so an imperial market gets feet and a metric one gets metres.
Enter length, width and thickness
The model and the volume readout update as you type.
Orbit to check it
Drag the viewport to rotate. Proportions that look wrong on screen are usually a units mix-up in the input.
Export the format you need
DXF for CAD drawings, OBJ for visualisation and most 3D software, STL for printing and mesh workflows.
Set units on import
Tell your CAD package the same unit you typed here. DXF carries a units flag that many packages ask you to confirm.

Where this tool stops

It models one rectangular element. It is a dimension-checking and file-generation tool, not a modeller — there are no assemblies, joins or reinforcement.