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Clab Assistant

Pattern making, without the manual drafting.

Clab Assistant helps you create block patterns from your measurements, review them in the preview, and apply size grading using your own size charts.

Enter and adjust measurements

Select a Pattern Type and enter the measurements for your project. Clab calculates related measurements using its internal calculation rules and updates the pattern preview as you make changes.

You can adjust editable measurements to refine the fit and proportions. See Measurements and Preview for details.

Real-time generation and preview

Use the preview to check the shape and proportions of your block pattern as you enter or edit measurements. When the pattern is ready, use Generate Pattern to prepare the files for download.

See Generate Pattern for download options and plan availability.

Size grading with your own charts

With a plan that includes the Grading Pack, you can grade a pattern using a size chart you have created and configured.

  1. Create a Size Chart Template for the relevant Pattern Type, specifying the size list and sample size.

  2. Reuse the configured chart by assigning it to other patterns with the appropriate Pattern Type.

You define the chart's sizes and rules, and Clab applies grading automatically according to the assigned chart.

Supported Pattern Types

Clab Assistant supports a wide range of pattern types to fit different garment categories and design styles, including:

  • Jackets with set-in sleeves

  • Full or two-piece raglan sleeves

  • Women's outerwear (with or without bust darts)

  • Sports trousers and jeans

  • And more

Each pattern type can be used to generate different fits depending on your preferences and measurement choices.


Clab Assistant helps you work faster, with more precision and flexibility — from the very first block pattern to complete graded size ranges.

If you're using a 3D CAD system, you can instantly assemble the pattern and evaluate the fit before defining stylistic or construction details.

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