Updated September 28, 2026 · Maintained by Metal3D.ai
Metal3D.ai organizes custom metal part requests from global engineering customers for sourcing in China. Start with your current files and requirements, resolve the questions that affect manufacture, and agree a reviewed quote before production.
The manufacturing scene shown here is illustrative. Capability and delivery are confirmed for each project.
If you need a starting model, AI product design supports L brackets, round flanges and open boxes with editable dimensions in millimetres. A verified account and explicit consent for external text planning are required when the feature is available. Preview the generated model, download STEP and STL drafts, then attach the files to your manufacturing request. These templates do not support assemblies, threads or freeform shapes; the files still need engineering review before manufacture. Read the design and submission guide.
Step 1: Describe every part
Use one RFQ for up to 20 separately specified parts. Record each part's name, material, process, quantity, finish, tolerance needs and drawing revision. Assign files to the matching part or explicitly identify a shared assembly or project package.
The intake accepts STEP, STP, STL, 3MF, IGS, IGES, OBJ, DWG, DXF, PDF and ZIP. Acceptance of a format does not establish that the file is ready for production. For CAD support, put sketches or image references into an accepted PDF or ZIP package and explain the required output.
Include the destination, target schedule and intended use. Prepare an RFQ or review the procurement questions.
Step 2: Check the manufacturing inputs
Local requirements checks flag missing information and prepare questions. New manufacturing requests use these checks and human review, without an external AI summary option. A file being present does not establish its geometry, strength, manufacturability or price.
Request an NDA before sharing information that needs a separate confidentiality arrangement. The request flags the project for human handling and does not itself sign an agreement. Existing project records retain their original review sources and consent history. Read the design and submission guide.
Step 3: Resolve the engineering questions
Use the verified account that owns the project to answer required questions. Engineering reviews the current input before recording a decision. Add requirements, supplement drawings or select revised files before checkout begins; the project preserves the scope before and after each change.
A scope change pauses the affected quote and requires fresh engineering and compliance review. A checkout claim, payment record or manufacturing order blocks direct edits; contact the team to agree a controlled change.
Step 4: Confirm the reviewed quote version
Check each part's scope, selected files, quantity and price, along with the currency, lead time, shipping, tax lines, validity and payment terms. Clarify the inspection plan, exclusions and delivery responsibilities before confirmation.
Published versions retain their original scope and terms. Compare changes with the prior version and explicitly confirm the replacement you approve. Confirmation records scope approval and does not mean payment has been received.
Step 5: Agree production, inspection and delivery
Manufacturing and carrier transit time are confirmed separately. Define the inspection records that are included and the shipping arrangement for your destination. After-sales review compares evidence against the approved drawing and inspection scope.
Quality and inspection · International shipping from China · After-sales and issue review