What you get
- A PDF manual in three layouts: the full manual (cover, parts list with a picture of every kind of part, exploded overview, two steps a page), a compact one (six steps a page) and an A4 poster.
- Exploded drawings for every step: the parts of that step in colour, the ones already fitted in line art, an arrow showing where each part goes in, and a box listing the parts and quantities used.
- An assembly animation (MP4, 1080p) that flies the parts in step by step with sound, ready for a product page or a training video.
- The text in your language: Traditional and Simplified Chinese, Japanese, English or Korean.
How it works
- Export STEP from your CAD. Export the top-level assembly, not single parts. See the CAD export guides if you are unsure where the option is.
- Open it in the workbench. Drag the file onto the page. A 15 MB assembly with 900 parts opens in about 15 seconds; very large machines (6,000+ parts, 66 MB) take under a minute.
- Let the AI plan the steps. It groups identical parts (four M4 screws become one step "×4"), orders the build from the base outwards and writes one line of instruction per step. A 900-part assembly takes about 20 seconds.
- Adjust if you want: merge, split or reorder steps, rename parts.
- Preview and export the PDF and the animation.
What makes a good input
- An assembly, not one solid. A single solid has nothing to take apart; the workbench then shows it in section instead.
- Meaningful part names. The AI reads the part and sub-assembly names. "M8 hex nut" plans better than "Part37".
- Solids, not surfaces or meshes. STEP AP203, AP214 and AP242 all work. STL and OBJ are meshes without parts and are not supported.
- Up to about 10,000 placed parts for the AI plan; bigger machines are better split into sub-assemblies, one manual each.
Price
Opening a file, the automatic step order, the preview and the export are free. The AI plan is free once a day; after that it costs US$0.50 from prepaid credit (top-ups of US$5, 10 or 20, no fees). Free manuals carry a light AssemblyStep watermark; removing it costs US$1 per manual. Sharing a manual to the public gallery earns US$0.20 of credit (once per model).
See a finished manual
Every manual in the gallery was made this way: open one to see all its pages, the step list and the animation without signing in.
Questions
Is my STEP file uploaded?
No. The file is read in your browser with a WebAssembly build of the OpenCascade reader. For the AI plan only the part names and their sizes and positions are sent, never the geometry. See why the STEP file stays in your browser.
Which CAD programs work?
Anything that exports STEP: SolidWorks, Fusion, Onshape, FreeCAD, Inventor, Creo, CATIA, Solid Edge, NX and others.
Can I edit the steps the AI made?
Yes. Steps can be merged, split, reordered and renamed before export, and the manual can be regenerated in another language.
Can I use the manual commercially?
Yes, the manuals you make are yours to use. Remove the watermark first if you print or sell them.
1 free AI plan a day · your STEP file stays in your browser
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