Rhino 3D Tip: Crisp Vector Exports from Rhino

Crisp vector outputs from Rhino viewports ensure sharp prints, scalable PDFs, and clean edits downstream in CAD and illustration apps. Here’s how to get consistently professional results.

Pick the right workflow

• Print to PDF (Vector): Use vector-capable display modes such as Wireframe, Hidden, Technical, or Pen in model or layout views. In the Print dialog, set Output to Vector and choose Rhino PDF as the driver.
• Make2D: Generate view-specific vector curves from complex scenes. Great when you need editable curves and layer separation.
• HiddenLine: Fast hidden-line removal for layout-ready linework tied to the active view.

Prepare the model

• Reduce visual noise: Turn off isocurves on heavy objects if not needed (Object Properties > Isocurves). Hide construction layers and references before output.
• Set document tolerances appropriately (File > Properties > Units). A too-loose absolute tolerance can cause tiny gaps; too-tight can slow down Make2D/HiddenLine.
• Use Named Views to lock camera angles you’ll output repeatedly.

Dial in display and detail settings

• Layouts: Add Details with explicit scales (e.g., 1:10, 1/4”=1’-0”). Keep each Detail in a vector-capable mode. Avoid Rendered views when you need pure vectors.
• Technical/Hidden modes: Configure silhouettes, creases, and intersection edges as needed. Fewer edge types = cleaner PDFs.
• SetPrintDisplay: Toggle print widths on in viewports to preview lineweight hierarchy before you print.

Control lineweight, linetype, and hierarchy

• Assign Print Widths by Layer for predictable graphics. Establish a small, reusable set (e.g., 0.10, 0.18, 0.25, 0.35, 0.50 mm).
• Use linetype scaling so dashed/center lines read at plotting scale. Test at final sheet size.
• For silhouettes, consider a slightly heavier width to reinforce figure/ground clarity.

Avoid rasterization triggers

• Bitmaps, gradients, transparency, shadows, and complex hatch patterns can force raster output. If present, isolate them on separate Details intended for raster or swap to simpler hatches.
• ExplodeHatch only if you must edit vectors downstream; prefer native hatches for speed.

Make2D/HiddenLine best practices

• Organize output by layer (Maintain source layers in Make2D) to style lineweights quickly in Illustrator or CAD.
• Hide tangent edges if the drawing reads better; later add key silhouettes with Silhouette.
• Post-process: SimplifyCrv to reduce points, Join where appropriate, and verify closed boundaries for fills.

Quality checks before sending

• Open the PDF in Illustrator or Affinity Designer to confirm strokes (not embedded rasters).
• Check tiny text at 100% zoom; adjust text height or ConvertTextToCurves if sharing with teams lacking your fonts.

Pro tip: Build a template file with pre-tuned vector display modes, page sizes, title blocks, and a minimal layer lineweight system. Save time every project.

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