Why does embroidery thread tangle, knot and fray?

Why floss misbehaves

Almost every thread problem comes from two things: twist and wear. Each stitch turns the needle a little in your fingers, and that turn travels up the thread as twist. Twisted thread folds back on itself into small loops, and loops catch into knots. Meanwhile, every pass through the linen rubs the floss. After enough passes the fibers lift, and you get fuzz, then fraying, then a thread that snaps.

Length: the change that fixes most of it

Cut from your fingertips to your elbow, about 18 inches. DMC gives the same measure as a maximum, and warns that longer thread gets worn, frayed or dirty from all the handling. Needle 'n Thread works with 18 to 20 inches of cotton floss and says really long lengths cause trouble.

A long thread doesn't save time. Its last few inches have been through the fabric dozens of times, so they're the fuzziest, the most twisted and the most likely to knot. Rethreading every 18 inches feels slower, and it's much faster than picking out a knot.

Using a loop start? You pull one strand about 36 inches long and fold it in half, so the working length is still about 18 inches. The loop start shows how.

How to untwist floss as you stitch

• The dangle. Every few stitches, or the moment the thread starts to kink, lift the hoop and let the needle hang free. It spins back until the twist is gone. Then carry on.
• Roll it back. If you notice you always turn the needle the same way, give it a small roll the other way between your fingers every few stitches.
• Separate one strand at a time. Strands peeled off as a pair twist around each other from the start. Pull each one out on its own and lay them back together. How many strands walks through it.
• Keep the strands flat. Two strands lying side by side cover the line like a ribbon. Twisted into a rope, they look thinner and catch more.

How to rescue a knot without breaking the thread

1. Stop pulling. A knot that's pulled harder only gets tighter. The moment the thread jams, let go.
2. Turn the hoop over and look. Most knots that form mid-thread are really a loop that has caught on itself. You can usually see where the loop is.
3. Open the loop with a needle. Slide the tip of a spare needle into the loop and ease it bigger, gently, lifting it away from the fabric rather than pulling the thread.
4. Draw the thread back through. Once the loop is open, pull the working needle slowly so the thread slides back out of it. Then let the needle dangle to take out the twist that caused it.
5. If it won't open, end the thread. Cut the thread on the back, leaving enough tail to weave in. Weave it under 4 or 5 stitches and start a fresh length. A new thread is better than a torn hole.
6. Check the front. If the tug pulled a stitch out of shape, nudge it back with the tip of the needle from the back.

Fuzzy, fraying or breaking floss

It goes fuzzy halfway along.

That's wear. Change to fresh thread as soon as it loses its sheen, instead of trying to finish the length. Satin fills show fuzz the most, so start every eye and nose with a new, shorter piece.

It shreds right at the eye.

The eye rubs the same spot on every stitch. Every so often, slide the needle a little way along the thread so the wear moves. Use a needle sized for your strands: Needle 'n Thread pairs a size 9 crewel with 2 strands and a size 7 with three.

It breaks when I pull.

Usually worn thread, or a needle that drags. A needle that's gummy from a stick and stitch sheet drags on every stitch: clean the sticky needle.

It feels tacky and picks up fuzz.

When you stitch through a stick and stitch sheet, a little of its glue rubs onto the thread, most of all in dense fills. Wipe the needle more often there, and start the next area with fresh thread.

A new skein looks fuzzy from the first stitch.

Floss varies. Good six-strand cotton is smooth and has a soft sheen. If one skein is rough from the start, try another.

Should you use thread conditioner or beeswax?

Some stitchers run floss across beeswax or a conditioner to tame it. Needle 'n Thread argues that decorative cotton floss shouldn't need either: a coating changes how the strands spread, beeswax darkens on thread over time, and conservators have raised concerns about silicone-based conditioners on natural fibers. Beeswax still has a place where strength matters, like sewing on beads or buttons.

For a pet portrait, our pick is no wax and no conditioner. Short lengths, one strand at a time and the dangle do the same job, and nothing is left in the linen when you rinse it. Wax won't help a gummy needle either. Rubbing alcohol does.

Questions people ask

Keep going

• How-to guideHow many strands of embroidery floss should you use?One firm answer per stitch: 2 strands for back and satin stitch on linen, 1 for fine details, with a table and how to separate floss without tangles.
• How-to guideHow to fix embroidery mistakes (puckers, tangles, uneven stitches)Unpicking, puckering, tangles, uneven stitches and loose threads: what causes each, and the fix, for hand embroidery on linen.
• How-to guideHow to start embroidery without a knotThe loop start, the waste knot and the away knot, step by step: three ways to anchor your thread with no lump on the back.
• How-to guideHow to thread an embroidery needle (even with shaky hands)Pinch and press, the fold method and a threader, the right needle for 2 or 3 strands, and tricks for tired eyes and shaky hands.
• How-to guideNeedle getting sticky with stick and stitch? Here's the fixWhy stick and stitch makes the needle gummy, how to clean it in seconds, and the other small problems that turn up mid-stitch.
• How-to guideHow to end embroidery thread (and keep the back neat)Tie off without a knot, know when to stop a thread, and keep the back neat so nothing shadows through light linen.