.IORECOMMENDED
Build in Studio
Create your own brick model in BrickLink Studio and save the project as an .io file. This preserves the model's structured parts and colours.
GET STARTED
Bring your model or inventory to BrickFlow.
The most reliable starting point is a structured model you made or have permission to use. You do not need a particular third-party inventory website.
.LDR / .MPD
Use an LDraw model
If you design in an LDraw-compatible editor, save a complete .ldr or preferably self-contained .mpd model. Include referenced submodels.
.BSX
Organise an inventory
BrickStore creates .bsx inventory files. These can describe part numbers, colours and quantities without a 3D source model. Grouping depends on the information saved in the file.
CSV / XML
Prepare a structured list
Have a parts list from your own design or another authorised workflow? Put it into BrickFlow's documented inventory format. Include a part ID, colour and quantity for each line.
PDF
Use a compatible inventory document
A PDF can work when it clearly identifies parts, colours, quantities and sections. An instruction booklet made only of pictures may not contain enough information for reliable extraction. Check the format requirements before purchasing.
OFFICIAL INSTRUCTIONS
Find instructions for a set you own
LEGO's official building-instructions library offers downloadable PDFs. These may help you identify individual parts or the contents of a whole bag you need to replace. Not every booklet contains a usable parts inventory or will import successfully into BrickFlow. For genuine missing or broken pieces, see LEGO's replacement-parts service.
BrickFlow is independent of the LEGO Group. LEGO® is a trademark of the LEGO Group, which does not sponsor, authorise or endorse this site.
YOUR RIGHTS
Use authorised content
Only process models, inventories or instructions you created or are permitted to use. Availability of a download does not by itself grant rights to reproduce or distribute a model or its printable parts.
BEFORE YOU BUY
Check the input, then the output.
BrickFlow organises recognised physical parts into 3MF projects. It cannot guarantee geometry for every part or recover missing IDs from every document. The app reports unavailable geometry instead of silently substituting parts.