Idea to 3D Part.

From a design brief to a CNC cutting outline

By the Partvo team · Updated October 1, 2026

Partvo’s hosted design workflow can create a 3D reference model and, when requested and successfully validated, a DXF outline for flat cutting geometry. It helps you prepare a part for review. It does not send a job to a machine or produce machine-ready G-code.

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What to put in your brief

State the full outside width, depth and height with units. Name the stock material and thickness, the number of separate pieces, and how the pieces connect. For a slot or tab, give its intended location and fit. If you have a photo, include at least one known measurement; an image alone does not establish scale. The Studio accepts confirmed outside dimensions up to 5,000 mm per axis, but complex designs can still fail to generate or validate.

Can I request a large interlocking plywood assembly?

You can describe a large assembly in the Studio, including a proposed 2.2 m display made from interlocking panels. The 5,000 mm per-axis limit is an input cap, not a promise of successful generation, a usable DXF, sheet fit, structural stability or fabrication. Break the design into panels that can fit your actual stock and machine, and review each joint and the assembled structure before cutting.

What measurements should the brief include?

• Stock and sheets: Give plywood grade and thickness measured with calipers at several locations, not just its nominal label. State each sheet’s usable length and width after clamping and trim margins, plus grain direction where it matters.
• Tabs and slots: Name each mating pair, insertion direction, tab width, slot width and depth, reference edge and intended fit. Mark unknown clearances for a test coupon cut from the same stock instead of guessing a universal allowance.
• Cutting process: Record cutter diameter, expected kerf or offset and whether inside corners need dogbone relief. Confirm or add those details in CAD/CAM; do not assume the generated outline includes cutter compensation or dogbones.
• Assembly and stability: Describe panel order, base footprint, supports or anchoring, expected loads and the risk of tipping. A large freestanding structure needs independent stability review before use.

Brief to adapt: “I want a proposed 2.2 m tall interlocking plywood display. Overall width and depth: [measured or target values]. Available sheets and usable cutting bounds: [length × width]. Measured plywood thickness at several points: [values]. Cutter diameter: [value]. Draw separate panels and label every mating tab and slot; ask me for missing fit and stability measurements. I will test a joint in the actual stock before approving full-size cutting.” This is a planning example, not a completed Partvo design or a fabricated product. As of October 1, 2026, Partvo has no public, comparable cut-tested full-size panel example to cite.

Will Partvo supply ready-to-cut CNC files?

Only a successfully validated result that lists DXF provides a cutting outline. Partvo does not nest panels on sheets, apply machine-specific kerf or dogbone settings, or provide a toolpath or G-code. Review any DXF in your own CAD/CAM software and create machine instructions there.

What the DXF contains

When a result lists DXF as an available format, the file is intended to contain flat, closed 2D cutting contours in millimeters. Separate outer profiles and openings can be represented as distinct contours. Inspect the DXF entity types and geometry in CAD/CAM: a 3DFACE mesh of the 3D model is not a 2D cut outline, and open or duplicate contours also need correction before machining. The download includes the available 3D reference files for that result. Check the version’s file list before promising a DXF to a customer or fabricator: not every request yields one.

What you must do before cutting

Open the DXF in your own CAD or CAM software and check its physical scale, every contour, panel orientation, fit and clearances. Decide the sheet layout, stock dimensions, tool diameter, kerf or offset, tabs, cut order, feeds, speeds, hold-down and safe machine setup. Partvo does not evaluate sheet fit or kerf and does not generate a toolpath, G-code, cut sheet or machine instructions. Test a small fit sample where practical and obtain qualified review for uses that require it.

How billing works

Partvo uses prepaid design credits. The first top-up is $2.50 before applicable tax for 5 million credits, once per account; later top-ups start at $5. AI usage can consume credits even when an attempted design fails, so review the displayed limit before generating. A saved design, validated file and real-world manufacturing fitness are different checks. Read the current pricing and usage policy.

For agent access, see Partvo for agents and the REST and MCP guide. For ordinary model exports, see STL versus STEP.