Crochet Sweater and Waistcoat in Stylecraft Special DK - 9645 - Downloadable PDF

Crochet Sweater and Waistcoat in Stylecraft Special DK – Pattern 9645

Pattern 9645 from Stylecraft is a downloadable PDF crochet pattern featuring two distinct designs: a textured crochet sweater with short sleeves and a longline crochet waistcoat. Both garments are worked in Stylecraft Special DK yarn and are sized to fit a wide range of bust measurements, from 81–86 cm (32–34 in) up to 122–127 cm (48–50 in), making this pattern an excellent choice for crocheters who want inclusive sizing in a single purchase. The pattern is rated as intermediate difficulty, meaning it is best suited to crocheters who are comfortable working beyond basic stitches and are ready to tackle simple stitch patterns and garment shaping.

About the Two Designs

Design One: The Crochet Sweater

The sweater is a relaxed-fit pullover with a generous actual bust measurement ranging from 94 cm (37 in) to 135 cm (53¼ in) across the five sizes. It features a full length of 58–69 cm (22¾–27¼ in) and relatively short sleeves of 30–32 cm (11¾–12½ in), giving it a casual, contemporary silhouette that works well across seasons. The sweater is shown in Spearmint shade 1842, a fresh, cool-toned green that highlights the surface texture of the stitch pattern beautifully.

The defining feature of the sweater is its crossed treble crochet stitch pattern, which creates a subtle woven or lattice-like texture across the fabric. This technique involves deliberately skipping a stitch, working a treble into the following stitch, and then returning to work a treble into the skipped stitch behind the first — creating pairs of crossed stitches that interlock across every right-side row. Alternate rows are worked as plain treble crochet, allowing the crossed stitches to stand out clearly against a smooth background. This two-row repeat is simple enough to memorise quickly but produces a fabric with considerably more visual interest than standard treble crochet.

Shaping at the back neck and shoulders is achieved by working across multiple stitch types in a single row — transitioning from double crochet through half treble crochet and into treble crochet — a classic crochet technique for creating a smooth, graduated slope without the need for separate cast-offs or sewn seams at the shoulder line.

Design Two: The Crochet Waistcoat

The waistcoat is a sleeveless, longline layering piece with an actual width of 51–71 cm (20–28 in) and a full length of 70–81 cm (27½–32 in), making it a versatile wardrobe staple that can be worn open or as a lightweight outer layer. It is shown in Silver shade 1203, a cool neutral that gives the garment a sophisticated, understated finish. The longer length and sleeveless construction make it particularly well suited to layering over tops, shirts, or dresses throughout the year.

Like the sweater, the waistcoat is constructed using treble crochet as the primary stitch, keeping the fabric light and drapey — qualities that are especially important in a sleeveless garment where weight and movement matter. The overall construction follows a classic crochet garment approach, working flat panels that are seamed together, a method that gives the finished piece clean, structured edges.

Techniques Used

• Crossed treble crochet: The signature stitch of the sweater, creating a woven, textured surface by crossing pairs of treble stitches across right-side rows.
• Foundation chain and turning chain method: Both garments begin with a foundation chain, with turning chains counted as stitches throughout — a standard intermediate crochet convention that crocheters should be comfortable with before starting.
• Stitch-type shaping: Shoulder and neck shaping is worked by transitioning between double crochet, half treble crochet, and treble crochet within a single row to create a smooth gradient rather than abrupt steps.
• Flat panel construction: Both designs are worked in flat rows and seamed, rather than worked in the round, giving the maker full control over tension and stitch count at all times.
• Garment sizing and pattern reading: