Double buttonhole stitch
- Double blanket stitch
- Dovetail buttonhole

This stitch consists of two facing rows of buttonhole stitch where the ‘legs’ of the stitch interlock.
See double buttonhole bars for a related version of this stitch.
Examples of the use of double buttonhole stitch exist in both historic and contemporary embroidery: the Victoria and Albert Museum, London holds an early 18th century whitework fichu (neckerchief) which features the stitch; embroidery worked by the nomadic Rabari peoples of north-western India have traditionally used double buttonhole stitch; and Wallachian embroidery, popular towards the end of the 19th century in the US, features double buttonhole stitch (sometimes known as dovetail buttonholing) as one of its core stitches.
For more background see the entry for buttonhole stitch.
Method
Work a row of blanket stitches from left to right.
Work a second row of blanket stitches from right to left. Make sure that the vertical stitches fit into the spaces between the blanket stitches in the first row.
Continue as required.

Structure of stitch
Common uses
Embroidery Techniques
Related Stitches
References
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'Whitework fichu', Victoria and Albert Museum (2021). Available at: https://collections.vam.ac.uk/item/O360210/fichu-unknown/ (Accessed: 12 October 2021)
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Judy Frater. (1999) 'When parrots transform to bikes: social change reflected in Rabari embroidery motifs', Nomadic Peoples pp.31-49 (19 pages). Available at: https://www.jstor.org/stable/43123556