The September Coat 18-28 - Merchant & Mills Sewing Pattern (English)

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Product description

Overcoat meets duster. An oversized coat for striding through town and country with purpose.

Choose to make either lined or unlined. The September works for a variety of seasons, in oilskin or wool it can be a proper winter coat, or in linen it feels like a casual throw on.

This is a multi-size paper pattern, sizes UK 18 – 28.

Skill level – intermediate.

All seam allowances are 1.5cm unless otherwise stated.

Suggested fabrics – Dry oilskin, oilskin, mid – heavyweight linens, 7 – 12oz denim, wool corduroy, cotton twills or canvas. A heavier weight cloth will result in a more structured coat. For the lining, we’d suggest using Barrier Lining if you are using oilskin. You could also use cotton voile, lightweight linen, cotton poplin, hemp/cotton, lightweight wools or a traditional slip lining.


You will need:
1 x Matching thread
5 x 2cm/3/4″ buttons
Optional (recommended for most fabrics) 1.3M/1.5YD interfacing.
A note on sizing:
The September has an oversized fit, always consult the finished measurements table to see how much ease you’d like in your coat. For example, Elwen in the video is wearing a size 10 but could wear 8-14 depending on the fit she wanted.

Fabric Requirements:

Self18 - 2022 - 2426 - 28
110cm/43.5" wide (with or without nap) 4.6m/5yd 5.5m/6yd 5.5m/6yd
120cm/47" wide (with or without nap) 4.6m/5yd 4.7m/5.5yd 5m/5.5yd
140cm/55" wide (with or without nap) 4m/4.5yd 4m/4.5yd 4.3m/4.75yd
150cm/60" wide (with or without nap) 3.8m/4yd 4m/4.5yd 4m/4.5yd
Lining (lined version only)      
110cm/43.5" wide (with or without nap) 3.9m/4.25yd 3.9m/4.25yd 4m/4.5yd
120cm/47" wide (with or without nap) 3.5m/3.75yd 3.9m/4.25yd 4m/4.5yd
140cm/55" wide (with or without nap) 2.7m/4yd 3.3m/3.5yd 3.5m/4yd
150cm/60" wide (with or without nap) 2.5m/2.75yd 2.8m/3yd 3.4m/3.75yd

Finished Measurements (in cm):

Bust 139.9cm/55" 145.6cm/57.25" 152cm/60" 158.2cm/62.25" 164.5cm/64.75" 170.8cm/67.25"
Waist 143.4cm/56.5" 149.7cm/59" 156cm/61.5" 162.3cm/64" 168.6cm/66.5" 175cm/69"
Hip 149.4cm/58.75" 155.7cm/61.25" 162cm/63.75" 168.3cm/66.25" 174.6cm/68.75" 181cm/71.25"
Length (cb) 123.2cm/48.5" 123.7cm/48.75" 124.1cm/49" 124.6cm/49" 125cm/49.25" 125.5cm/49.5"
Sleeve length (underarm) 49cm/19.25" 49cm/19.25" 49cm/19.25" 49cm/19.25" 49cm/19.25" 49cm/19.25"
Bicep 51.1cm/20" 53.3cm/21" 55.5cm/21.75" 57.7cm/22.75" 59.9cm/23.5" 62.1cm/24.5"

UK Sizing

Bust 108.25cm/42.5" 114.5cm/45" 120.75cm/47.5" 127cm/50" 133.25cm/52.5" 139.5cm/55"
Waist 91.25cm/36" 97.5cm/38.5" 103.75cm/41" 110cm/43.5" 116.25cm/46" 122.5cm/48.5"
Hip 114.25cm/45" 120.5cm/47.5" 126.75cm/50" 133cm/52.5" 139.25cm/55" 145.5cm/57.5"

Perfect fit

Linen-Wool - Old Rose Multi Check
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