Why Blend at All?

Spinning a single breed from fleece to skein is deeply satisfying, but blending is where the real alchemy begins. A yarn of pure Shetland is warm and honest, yet it will never carry the sheen of silk or the soft halo of alpaca. Combine the two and you have something that behaves differently under the wheel, takes dye unevenly in the most beautiful way, and knits up into fabric with genuine depth. Carding is simply the act of opening, aligning and mixing fibres — and it is the step where you decide what your yarn will actually become.

Know Your Tools

Three tools do most of the work in a British handspinner's studio, and each suits a different scale of ambition.

• Hand carders — a pair of curved paddles covered in carding cloth, usually 72 to 96 teeth per inch for wool and 108 for finer work. Charge one carder with fibre, stroke the other across it, and transfer the rolly mass back and forth. A working surface of around 190mm by 100mm is comfortable for a couple of batts at a time.
• A blending board — a flat board of carding cloth, roughly 30cm by 60cm, used with a dowel or brush to lift fibres into a long, striped batt. Ideal for colour work, sparkle and gradients, and far gentler on the wrists than endless hand carding.
• A drum carder — a geared machine that produces large, even batts quickly. Standard cloth is 72 tpi; choose 120 tpi if you mainly work with alpaca, silk and fine merino.

Choosing Fibres That Get Along

Staple length is the single most important consideration. Fibres of wildly different lengths will slip past one another and create a yarn that sheds or pills. Aim for a spread of no more than about 40mm.

• Wool for the base — Bluefaced Leicester gives lustre and a 100mm staple; Corriedale and Shetland are forgiving all-rounders; merino is soft but short and prone to nepps if over-carded.
• Alpaca for drape — huacaya adds a warm halo, suri adds long, glossy locks. Neither has crimp, so never exceed 30 per cent or you lose elasticity.
• Silk for sheen — tussah top for strength and shine, mulberry for luxury, silk noil for a tweedy, flecked texture. Silk hankies can be stretched into a fine web and laid over the batt.
• Sparkle for delight — fine trilobal nylon or silver-tipped viscose, used sparingly. A pinch goes a very long way.

Loading and Blending Step by Step

On a blending board, work in diagonal stripes. Lay your base wool across the cloth from corner to corner, then add your accent fibres in thin bands, alternating direction so the layers cross. Keep the butt ends towards the bottom edge and the tips upwards. When the board is full but not choked, use your dowel to lift the fibres from the bottom edge, peeling them away in a sheet, then roll that sheet into a rolag from the side. The result spins beautifully with a long draw.

If you are working with hand carders, charge one carder about two-thirds full, then stroke the second carder across it in a light, sweeping motion. Transfer the fibre back to the first carder and repeat. Three or four passes is plenty; beyond that you begin to create nepps rather than blend. Avoid pressing down — let the teeth do the work.

Ratios, Colour and Sparkle

A good rule of thumb is 80 per cent base, 20 per cent accent. Push silk to 30 per cent for a high-sheen yarn, or hold it at 10 per cent for a subtle glint. When blending colours, keep to three or four tones and place them so the stripes run the length of the batt — this produces a slow, painterly shift rather than a muddy average. For a deliberately variegated yarn, blend only two passes so the colours remain distinct.

Sparkle is best added on the final pass, laid lightly on top. If you card it in from the start it will disappear into the mass. A light mist of water on your hands and tools tames the static that plagues dry winter days, and a humid British morning does the job for free.

Faults, Fixes and Finishing

If your batts feel lumpy, you are overloading the cards. If they shed, your staple lengths are mismatched. If they are dense and felted, you are pressing rather than brushing. Remember that carding produces a woollen preparation — airy, chaotic, full of bounce — which suits long draw and warm, rounded yarns. For crisper, more defined stitch patterns, pull your batt lengthways into a roving and spin it semi-worsted with a short forward draw.

Label every batt with its contents and date before it goes into the stash. Six months later, when you are deciding how to spin it, that scrap of paper will be worth more than you can imagine.