Now in beta. The AI copilot for structural steel is open for early access. Bring a drawing set and see it read. Book a demo →

The AI copilot for structural steel

From contract drawings to a coordinated model without the redraw.

Fablnx reads your contract drawing set, finds the steel, and helps you trace it into one coordinated 3D model — with the design spec, RFIs and a full material takeoff along the way, and a trail back to every sheet.

20-minute demo · we reply within a day · your drawings stay confidential.

Built by Acero-AI In the browser or as a desktop app
After · coordinated model
Before · contract drawing
← the contract sheet you have todaythe coordinated model you build →
Built for the people who work from contract drawings
[ 01 · The problem ]the manual grind

A drawing set still gets turned into a model by hand — sheet by sheet.

01 · The paper

It arrives as a PDF.

A steel package comes in as a contract drawing set — hundreds of sheets. Pixels, not data. Nothing a model can read.

02 · The redraw

Then it's rebuilt by hand.

Every grid, column and beam is read off the sheet and re-created in a model — member by member, sheet by sheet.

03 · The gaps

And the sheets disagree.

Notes conflict, dimensions go missing, revisions clash — and it surfaces late, on the model or in the shop.

Stop redrawing. See it on your own drawings.

20-minute demo · reply within a day · your drawings stay confidential.

[ 02 · Why it stayed manual ]until now

Software never fixed this — for three reasons.

Lock 01

Unstructured PDFs

Drawings are pixels, not data. There's nothing to read programmatically.

Lock 02

Expert reading

Which line is a beam, which note governs — it takes a trained eye, sheet by sheet.

Lock 03

Fragmented tools

The PDF, the model and the takeoff live in separate tools — no thread runs between them.

So the drawing gets retyped by hand, every project. Fablnx is the thread that finally runs from the sheet to the model.

Stop redrawing the drawings. Start from what the copilot already found.

Drop the contract PDF in. The copilot reads the sheets, finds the steel and detects the frame — you review, correct, and commit it to one coordinated model.

[ 03 · What it does ]read, trace, coordinate, take off

One workspace, drawings to takeoff.

01 · Read

The copilot reads the whole set.

Drop in the contract PDF and the copilot goes through every sheet — scanned or vector — sorts the steel structural pages from the rest, and reads the general notes into a clean AISC design spec.

02 · Trace

Trace the frame on the drawing.

A precise 2D editor lets you place grids, columns, beams and braces right over the sheet — with the copilot detecting most of it, so you review instead of draw. Snapping and progressive unlock keep it honest.

03 · Coordinate

One coordinated 3D model.

Everything you verify commits into a single model you can orbit, section, measure and color — the way a detailer expects. Export to IFC for the rest of your toolchain.

04 · Take off

The takeoff, and the gaps.

Every member rolls up into an advance bill of material — mark, quantity, profile, grade, length and weight — exportable to CSV. Validation flags conflicts and missing info as RFIs, each one click from the exact spot on the sheet.

[ 04 · How it works ]four steps, one workspace

Drawings in. A coordinated model out — with you in the loop.

01

Drop the drawings

The contract PDF is the whole input. No setup, no export from another tool, no re-keying.

02

Read off the page

The copilot reads every sheet, sorts the steel pages, and pulls the general notes into a design spec.

03

Trace + coordinate

Place grids, columns and beams over the drawing — with the copilot detecting most of it — and commit them to one coordinated 3D model.

04

Take off + export

Roll up the material takeoff, resolve the RFIs, and export to IFC or CSV.

One modelcoordinated from the drawing, not rebuilt by hand
[ 05 · Why it's different ]what sets it apart

The whole job in one workspace.

One place to go from the contract drawing set to a coordinated model and a full takeoff — with a trail back to every sheet.
PDF → 3D
read the drawing set, commit one coordinated model
Design spec
grades, bolts and welds, read from the general notes
RFIs
conflicts and missing info, one click from the sheet
IFC · CSV
export the model and the takeoff to your toolchain
[ 06 · What we won't compromise ]how it's built

Built the way detailers work.

“Every fact in the model traces back to the sheet it came from. You can always see where a grid, a member or a spec was read — and jump straight to it.”

Traceable by designNothing enters the model unsourcedSee what it does →

“The copilot does the grunt work — reading sheets, detecting members, tallying steel. The detailer keeps the judgment, the corrections and the sign-off.”

You stay in controlReview, correct, commit — you decideHow it works →
[ 07 · Questions ]the real objections

Answers for detailers.

How much does the copilot do on its own?
It reads the sheets, sorts the steel pages, extracts the design spec, and detects grids, columns and beams — but nothing enters the model until you confirm it. You review and correct on the drawing; the copilot just removes the retyping.
Who owns the model and the data?
You do. You keep full ownership of every model, takeoff and file you produce in Fablnx.
What happens to our drawings?
They're encrypted in transit and at rest, never used to train shared models, and yours to delete. NDA on request.
Can we get the model into our other tools?
Yes. Export the coordinated model to IFC, and the material takeoff (advance bill of material) to CSV.
Where does it run?
In your browser, or as a desktop app for macOS, Windows and Linux — same workspace either way.
[ Book a demo ]

Give the redraw to the copilot.

20-minute demo · we reply within a day · your drawings stay confidential, covered by NDA on request.