FablnxThe AI copilot for structural steel

Upload a contract drawing. Let the copilot find the steel. Trace it into a coordinated 3D model with a full material takeoff — all in one workspace.

Get started

Your first model

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Read any drawing set

Drop in a contract PDF and the copilot reads every sheet — scanned images or native vector drawings — and sorts the steel structural pages from the noise.

Files & pages

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An AI copilot that does the grunt work

Triage sorts the sheets and Lectora reads the general notes automatically. Inside a scene, detection finds the grid, the columns and the beams so you review instead of retype.

Meet the copilot

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Trace the model on the drawing

A precise 2D editor lets you place grids, dimensions, columns, beams and braces right over the drawing, with snapping and progressive unlock.

Scene editor

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A coordinated 3D model

Commit your traced facts into one coordinated model you can orbit, section, measure and color — the way a detailer expects.

3D model viewer

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Design spec, extracted for you

The general notes are read into a clean AISC design spec panel — grades, bolts, welds and defaults, without hunting through pages.

Design spec

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Questions that point at the problem

Validation surfaces conflicts and missing information as questions, each of which jumps you straight to the spot on the drawing. An RFI goes to the engineer only when you agree.

Questions and RFIs

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Material takeoff in a click

Every member rolls up into an advanced bill of materials — mark, quantity, profile, grade, length and weight — exportable to CSV.

Material takeoff

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Built like an IDE

Tabs, split views, a command palette and keyboard shortcuts throughout — a workspace that gets out of your way.

The workspace

Scene editor — trace grids, columns and beams over the drawing

Page viewer — read any sheet, zoom, and mark it up

Design spec — the steel grades, extracted for you

RFIs — conflicts and missing info, one click from the drawing

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Scene editor — trace grids, columns and beams over the drawing