What is Blocking
Blocking is the process of soaking, pinning, and drying your finished knitted or crocheted project to achieve the correct shape. It's like "ironing" for knits — it evens out irregularities, opens up lace patterns, stabilizes dimensions, and gives a professional appearance.
Many knitters skip blocking — and it shows. The difference between blocked and unblocked projects is dramatic, especially with lace shawls, cable sweaters, and blankets.
Blocking Methods
Wet Blocking
The most effective method for most natural fibers (wool, cotton, alpaca).
Process: Soak the project in lukewarm water (86°F) with a drop of gentle detergent for 15–20 minutes. Remove and gently squeeze out water (don't wring!). Wrap in a dry towel and press — the towel will absorb most of the water. Lay the project on a blocking mat (foam tiles or towel) and pin it to the desired shape and measurements. Let dry.
Steam Blocking
Faster method, suitable for less dramatic corrections.
Process: Lay the project on a mat and pin in place. Hold a steam iron or steamer 1–2 inches above the project and steam. DO NOT touch the project with the iron — steam is sufficient. Let dry.
Warning: Don't use steam blocking on acrylic — acrylic fibers can lose elasticity when exposed to hot steam and "die" (becoming permanently flat and shiny).
Spray Blocking
The gentlest method.
Process: Pin the project to a mat and spray with water from a spray bottle. Let dry. Less effective than wet blocking — suitable for minor corrections or yarns sensitive to soaking.
When Blocking Helps Most
Lace shawls — lace patterns open up dramatically after blocking and increase significantly in size. Unblocked lace looks like a crumpled rag — after blocking, it's beautiful.
Cable patterns — blocking evens out stitches and makes cables pop dramatically.
Stockinette stitch — edge curling is reduced after blocking (though it won't disappear completely).
Sweater pieces before seaming — blocking ensures pieces have correct measurements for proper assembly.
When NOT to Block
Ribbing — if you want to maintain the stretch of ribbing, don't block too aggressively. Blocking will stretch out ribbing and reduce its elasticity.
Acrylic + steam — block acrylic with wet or spray methods only, never steam. Hot steam will irreversibly damage acrylic fibers.
Blocking Tools
Blocking mats — foam puzzle tiles. Pins hold well in them and you can assemble any size needed.
T-pins — stainless steel, won't rust or stain. Regular ball-head pins work too.
Blocking wires — long stainless steel wires threaded through the edge of your project. Perfect for long straight edges (shawls, blankets). Instead of dozens of pins, you thread one wire.
