FROM THE DRAWING BOARD. INTO CAD.PRODUCT PREVIEW / 01

Turn scanned engineering
drawings into 3D CAD.

We’re developing a workflow from scanned mechanical drawings to editable 3D CAD, with STEP export for your engineering tools.

Engineering-aware. Dimension-driven.

Join early access See how it works PDF, PNG, JPG / Individual mechanical parts

01 — SOURCE DRAWING2D

Original example engineering drawing of a 100 millimetre flange, with front and section views, a 40 millimetre bore and four mounting holes

FLANGE-001 / Rev. Amm · Scale 1:1

RECONSTRUCT

Dimensions
Features
Parameters

02 — PARAMETRIC MODELCAD

Isometric CAD representation of the example mounting flange, showing the raised hub, central bore and four bolt holes

Ø 10012 mm

ZYX

AUTHORED SAMPLESTEP · STL · CADQUERY

[ ] Dimensioned drawing Parametric definition Reviewable geometryIllustrative example. Engineering review required.

YOUR DRAWING HAS THE INFORMATION. RECOVER THE MODEL.2D → PARAMETRIC CAD → 3D

BUILT FOR THE ENGINEERING WORKFLOW

Dimensioned drawingsParametric geometryEditable CADOpen formats

02 / THE PROCESS

From scanned drawings
to parametric 3D CAD.

A planned workflow for dimensioned mechanical drawings. Views, units and tolerances guide reconstruction; engineering review checks the result against the source.

Upload the drawing

Start with a PDF, PNG or JPEG of a dimensioned mechanical part. Include readable dimensions, units and clear front, side or section views.

Read the engineering

The planned analysis pipeline identifies views, dimensions, tolerances and mechanical features.

Reconstruct in CAD

Build a parametric definition around engineering geometry. Dimensions become editable parameters.

Review. Then export.

Inspect the model, resolve ambiguities and use the CAD definition in your engineering workflow.

03 / INSIDE THE EXAMPLE

A drawing.
A definition.
An editable part.

Follow a mounting flange from orthographic views to a parametric CAD definition. The example shows a central bore, bolt circle and raised hub, defined by the dimensions in the source drawing.

PARTMounting flange

FEATURESHub · bore · 4 through holes

DEFINITIONMillimetres · CadQuery

Help shape the first release Authored demonstration, not an AI reconstruction.

flange.pyPARAMETRIC SOURCE

# FLANGE-001 · all dimensions in mm
import cadquery as cq

# Start with the drawing dimensions
outer_diameter = 100
bore_diameter  = 40
plate_height   = 12
bolt_circle    = 72

result = (
    cq.Workplane("XY")
      .circle(outer_diameter / 2)
      .extrude(plate_height)
      .faces(">Z").workplane()
      .circle(30).extrude(14)
)

# Continue with the bore and mounting holes

Readable parameters. Inspectable geometry.

04 / BUILT TO LEAVE THE BROWSER

Planned outputs:
STEP, STL and GLB.

STEP carries solid geometry for CAD exchange. STL and GLB serve mesh and preview workflows. The editable source definition remains available separately.

.py

CadQuery

The editable source.

A Python-based parametric definition you can inspect, change and regenerate.

.step

STEP

CAD that travels.

Solid geometry for exchange with your existing mechanical CAD tools.

.stl

STL

A mesh for the next step.

Triangulated geometry for prototyping, 3D printing and downstream mesh tools.

.glb

GLB

Ready for inspection.

A lightweight 3D preview for visual review and sharing in the browser.

Planned output formats. Join the early-adopter list to hear when reconstruction is available.Join early access

05 / KEEP THE ENGINEERING. LOSE THE REDRAWING.

Recover 3D CAD
from legacy drawings.

For teams recovering mechanical parts from paper and PDF archives when the original CAD is missing. Preserve dimensions, units and revision context throughout the workflow.

Legacy CAD recovery

Recover a starting CAD definition from archived technical drawings. Keep design knowledge accessible as engineering tools change.

Spare part reconstruction

Rebuild a reviewable model when original CAD is missing. Check critical fits and mating surfaces against the actual component.

Manufacturing archives

Prepare paper and PDF component drawings for modern 3D workflows. Organise inputs around parts, revisions and units.

Reverse engineering

Use dimensioned views as constraints for a starting model. Identify missing information before accepting reconstructed geometry.

Engineering migration

Move legacy drawing knowledge into editable, portable geometry and a CAD definition that can be maintained.

06 / GEOMETRY, WITH REASONS

Dimensions are constraints.
Not suggestions.

Mechanical drawings describe relationships: a concentric bore, a bolt circle, a section through a hidden cavity. Scan2BIM is being built to carry that information into parametric geometry.

Join the early-adopter list

Drawing analysis

Views, annotations, dimensions and tolerances.

Parametric reconstruction

CadQuery definitions with explicit geometric parameters.

Model validation

Review geometry, flag ambiguity and verify against the source.

THE TEAM BEHIND SCAN2BIM

Developed by L2Labs.

L2Labs is an AI development team working in computer vision and 3D software. Scan2BIM explores how dimensioned mechanical drawings can become reviewable CAD models, with engineering checks kept in the workflow.

About L2Labs Contact the team

07 / A FEW PRACTICAL QUESTIONS

The details
that matter.

Know what to expect before
you bring a drawing.

What is Scan2BIM being built to do?

Scan2BIM is being developed to reconstruct editable parametric CAD from scanned, dimensioned mechanical drawings. Join the early-adopter list to share your use case and hear when early access opens.

What kinds of drawings are you focusing on?

The initial focus is individual mechanical parts described in PDF, PNG or JPEG engineering drawings. Clear dimensions, units, front and side views, and section views provide useful information for reconstruction.

Which output formats are planned?

The planned outputs are CadQuery Python, STEP, STL and GLB. The parametric CadQuery definition will be the editable source; STEP carries exchange geometry, while STL and GLB provide mesh representations.

Can I upload or convert a drawing today?

This website introduces the product and collects early-adopter interest. Drawing uploads and automated reconstruction are not available here yet. The flange shown is an authored example of the intended workflow.

What is CadQuery?

CadQuery is an open-source Python library for describing parametric CAD models. Dimensions and operations such as extrusions, bores and holes form an editable source definition that can be regenerated.

Will reconstructed models need engineering review?

Yes. Dimensions, tolerances, units, feature placement and missing geometry must be checked against the source and intended use. A model preview alone does not establish manufacturing suitability.

Are assemblies supported?

The initial product scope is individual mechanical components. Assembly reconstruction would require a separate workflow.

What happens after I register?

We will use your submitted details to contact you about Scan2BIM early access and, where relevant, discuss your engineering use case. Registration does not create an account or require you to upload a drawing.

EARLY ACCESS / ENGINEERS WANTED

Be part of
the first drawing.

Working with legacy mechanical drawings? Join the early-adopter list and help shape a tool built around the parts you need to recover.

Hear when early access opens
Share your engineering use case
Help inform the first workflows

No account. No drawing upload. Just a conversation.

Turn scanned engineering drawings into 3D CAD.

From scanned drawingsto parametric 3D CAD.