A generator, not an image model
Most 'technical drawing generators' online are AI image tools that paint something drawing-shaped. Drawlytic projects your actual CAD solid on the OpenCascade kernel — the dimensions are real measurements.
Complete drawing packages
Multi-view SVG line art, framed PDF sheets (A4–A1 + Letter, fit or true scale), orthographic DXF, 1:1 cut-layer DXF for laser/CNC, STL reference — per part, from one upload.
You stay in control
Orient parts in 3D before drawing, name them for the title block, then add your own measurements, angles and cross sections free — as many revisions as you need.
How it works
- 1Export a STEP file from your CAD (SolidWorks, Fusion 360, Inventor, CATIA, Onshape, FreeCAD…) and upload it — or upload a 2D DXF directly.
- 2Orient and name every part in the interactive 3D preview.
- 3Generate: views are projected with hidden-line removal and dimensioned automatically.
- 4Fine-tune with the free measure tool, then download PDF, SVG, DXF and STL.
What a technical drawing generator has to get right
A technical drawing is a contract: the person machining, welding, laser-cutting or inspecting the part relies on every number printed on it. That sets a hard requirement for any tool that claims to generate one — the dimensions must come from the geometry itself. Drawlytic loads the exact boundary-representation solid from your STEP file into the OpenCascade CAD kernel (the same class of kernel that powers professional CAD systems) and computes each view by hidden-line removal: visible edges solid, hidden edges dashed, third-angle projection, millimetres throughout.
Dimensioning follows the same principle. Hole diameters are read from the model's cylindrical faces and grouped into counted callouts like 4×Ø8; fillet radii, chamfer angles, overall width/height/depth, thickness chains and center marks are all detected and measured on the B-rep — so the drawing agrees with your CAD system to the hundredth of a millimetre. Labels are placed with collision avoidance so callouts stay legible even on busy parts.
Generation is deterministic: the same model produces the same drawing every time. There is no prompt, no sampling, no 'roll again until it looks right' — which is exactly what you want from a document production will build against.
From 3D model to finished sheet
The workflow keeps the two decisions that need human judgment in your hands and automates everything else. First, orientation: every part opens in a 3D preview where you rotate it, snap the face that defines 'front' or lay the part flat, and name it — orientation decides which features are dimensioned most clearly. Second, refinement: after generation, the free Measure & adjust mode lets you dimension any edge, measure point-to-point distances and angles, drag labels, and pick a paper scale from fit-to-page to true 1:1, 1:2, 1:4 or 1:8.
Everything else is automatic. Assemblies split into up to 30 parts (largest first) plus an assembly overview drawing; each part gets vector SVG line art, PDF sheets in five paper sizes with a filled title block, an orthographic projection DXF with VISIBLE and HIDDEN layers, a 1:1 top-view DXF on a CUT layer for laser and CNC work, and an STL reference. Cross sections — a proper SECTION A-A with 45° hatching — are generated on demand and are always free.
Projects are saved to your account with their part names and files, so drawings can be re-downloaded, refined or sectioned weeks later without re-uploading the model.
Who uses it
Engineers and designers who model in SolidWorks, Fusion 360, Inventor or Onshape but need shop-ready 2D documentation faster than a drafting session. Job shops and fabricators who receive bare STEP files with RFQs and need a dimensioned sheet for the quote and a cut file for the machine. Makers and hardware startups without a drafting seat who still need real drawings for suppliers. If you can export a STEP file — every mainstream CAD can — Drawlytic can draw it.
Frequently asked
Is Drawlytic an AI image generator?
No. Drawlytic is a deterministic CAD tool: it projects your actual 3D geometry with hidden-line removal and measures dimensions on the exact solid. AI image tools generate a picture that looks like a drawing; the dimensions in it are decoration. See our comparison page for a detailed breakdown.
What inputs does it accept?
3D: STEP files (.step/.stp, AP203/AP214/AP242) from any CAD system, up to 25 MB and 30 parts per upload. 2D: DXF files. DWG needs a one-click DXF export first; mesh formats (STL/OBJ/3MF) are rejected because they carry no exact geometry.
What outputs do I get?
Per part: multi-view SVG drawing, PDF sheets (A4, A3, A2, A1, Letter) with frame and title block, orthographic projection DXF (VISIBLE/HIDDEN layers), 1:1 top-view cut DXF, STL reference — plus assembly overview and optional cross-section sheets. All dimensions in millimetres.
How accurate are the dimensions?
They're measured on the B-rep geometry your CAD exported — the same numbers your CAD system reports. Nothing is estimated from pixels.
Can it do section views?
Yes — draw a section line and Drawlytic generates a SECTION A-A view with cut faces hatched at 45°, as SVG and its own PDF sheet. Cross sections are free and unlimited.
What does it cost?
Free: 3 drawings a month (A4 sheet, small watermark) — no credit card. Pro: $19/month or $190/year for 100 drawings a month, all paper sizes, DXF export and no watermark. Credit packs from $0.28/drawing cover heavy months on any plan.
Do I need to install anything?
No — it runs in the browser. The geometry processing happens server-side on the OpenCascade kernel; your machine only needs to upload the file.
Which standards do the drawings follow?
Third-angle projection, solid/dashed line conventions for visible/hidden edges, counted hole callouts (n×Ø), section hatching at 45°, and framed sheets with title blocks — the conventions machine shops expect. Units are millimetres.
Related guides
Try it on your own part
Upload a STEP file and get your drawing in about a minute — or use the built-in sample part.
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