# [Plan a modular or mitred blanket](https://threadcabin.com/explore/372/plan-a-modular-or-mitred-blanket)

> Measure a finished joined module and keep its orientation and assembly sequence explicit.

- Canonical page: https://threadcabin.com/explore/372/plan-a-modular-or-mitred-blanket
- Language: en
- Published: 2026-09-25T17:26:35.1842475+00:00
- Updated: 2026-09-25T17:26:40.9824849+00:00
- Craft: Knitting
- Primary image: [Plan a modular or mitred blanket — example diagram](https://threadcabin.com/images/learning/n08-plan.png)

Measure a finished joined module and keep its orientation and assembly sequence explicit.

## Before you start

Gather the measurements, counts or timing sample needed below. Record their units and whether they describe a sample, the whole project or one purchased package. Use a finished sample when dimensions or material use depend on fabric structure.

## How to do it

1. **Plan modular and mitred construction** — Measure a joined module and map its orientation. Centered decrease lines and pickup direction determine how adjacent units meet.
2. **Join edges with mattress-style seaming** — Join corresponding edge bars while keeping the seam allowance consistent. Tighten short sections gradually and preserve the fabric’s natural length.
3. **Record sample measurements and behavior** — Record numbers alongside the exact material, tool, stitch pattern and finishing method. Add observable behavior rather than only a gauge total.

## Try this example

A joined square module advances 10 cm in both directions. A 40 × 50 cm field needs four by five modules, or 20, before borders; verify one four-module intersection first.

## Check your result

- Recheck the inputs against the actual sample or label, keep units consistent and round only the final count or purchase. Repeat a sample if a small measuring difference changes the decision.
- These arithmetic examples assume the measured structure stays comparable. Shaping, borders, dense textures and color changes require their own allowances or samples.

## Sources

- [www.purlsoho.com: all about gauge](https://www.purlsoho.com/create/all-about-gauge/)
- [www.craftyarncouncil.com: yarn weight system](https://www.craftyarncouncil.com/standards/yarn-weight-system)

[Browse editable craft templates](/crafts?craft=knitting)

[Report a correction](/corrections).

## Sources and provenance

- [Plan modular and mitred construction](https://threadcabin.com/explore/185/plan-modular-and-mitred-construction)
- [Join edges with mattress-style seaming](https://threadcabin.com/explore/190/join-edges-with-mattress-style-seaming)
- [Record sample measurements and behavior](https://threadcabin.com/explore/111/record-sample-measurements-and-behavior)
- [Motif layout planner](https://threadcabin.com/tools/motif-layout-planner)
- [Gauge is a fabric measurement, not a needle promise](https://threadcabin.com/explore/2/gauge-is-a-fabric-measurement-not-a-needle-promise)

## [Motif layout planner](https://threadcabin.com/tools/motif-layout-planner)

Turn a measured, joined motif repeat into rows, columns, and a make count for a rectangular project.

Join and finish several sample motifs before measuring the repeat pitch between matching points. Enter the motif field after subtracting borders.  Cover rounds up each axis; complete-only rounds down. Extra motifs are spares outside the layout.  Extra outer-edge allowance is added twice to each target dimension. Internal joins belong in the measured motif pitch.

Required field = target width/height + twice the outer-edge allowance. Divide each axis by the finished joined motif pitch, swapping axes when rotated. Cover rounds up; complete-only rounds down. Multiply rows by columns, then add the rounded-up spare percentage. This model covers aligned rectangular layouts.

- Joined repeat width: 10 cm
- Joined repeat height: 10 cm
- Target width: 40 cm
- Target height: 50 cm
- Extra motif allowance: 0 %
- Motif orientation: As measured
- Edge treatment: Cover target (round up)
- Seam or edge allowance: 0 cm