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Overview

Creating production drawings is one of the most time-consuming parts of the design process. Generating views, dimensioning correctly, applying tolerances, populating the title block, and building the BOM all take significant time — and mistakes in drawings cause downstream problems. Nexus can generate multi-view drawings, add dimensions and tolerances, apply GD&T, populate title blocks, and produce bills of materials — directly inside your CAD tool, from a single prompt.

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What Nexus can help with

  • Drawing creation — Generate front, top, side, isometric, section, detail, and break views on a standard sheet format.
  • Dimensioning — Apply dimensions to key features, add tolerances, and annotate to a chosen standard (ISO, ASME).
  • GD&T — Add geometric tolerances, datum references, and surface finish symbols in accordance with the relevant standard.
  • Title block — Populate part number, revision, material, finish, drawn-by, approved-by, and other fields from model metadata or from what you specify.
  • BOM — Generate a structured bill of materials from an assembly, including part numbers, descriptions, quantities, and materials.

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Example prompts

Create a drawing for C:/Projects/Bracket/bracket_v3.SLDPRT. Include front, top, right, and isometric views. Use a B-size sheet with ISO first-angle projection. Populate the title block: part number BKT-0042, revision A, material Aluminium 6061-T6, drawn by R. Aguiar.

Dimension the front view of the current drawing. Include all overall dimensions, the bolt hole positions and diameters, and the wall thickness. Apply ISO 2768-m general tolerances.

Add a flatness tolerance of 0.05mm to the bottom face. Add a true position tolerance of ⌀0.1mm to the four-hole bolt pattern, referenced to datum A (bottom face) and datum B (left edge).

Generate a BOM from C:/Projects/Pump/pump_asm_v2.SLDASM. Include columns for: Item, Part Number, Description, Material, Quantity, and Mass (kg). Format it for inclusion on the assembly drawing sheet.

Review the current drawing for completeness. Check that: all functional dimensions are shown, no features are undimensioned, tolerances are applied consistently, and the title block is fully populated. List anything missing.

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Tips for drafting prompts

  • Specify the standard upfront — ISO and ASME Y14.5 have different annotation conventions, projection methods, and tolerance interpretation rules. State which applies.
  • Describe what’s already there — If a drawing exists and you’re adding to it, tell Nexus what views and dimensions are already present so it doesn’t duplicate them.
  • Name datums explicitly — When applying GD&T, specify datum letters and which faces they correspond to so references are consistent across features.
  • Ask for a completeness check — After generating, prompt Nexus to review the drawing and flag any undimensioned features or missing annotations before you send it for review.