How deep? (conventions, India first)

The pattern of it: straight edges take deep hems (weight, body, better hang); curved or flared edges take narrow hems (less extra cloth to ease away). These are conventions, not laws – but break them knowingly.

Hemming curves: easing in

On a curved hem, the folded-up edge is a longer curve being asked to fit a shorter one, so it ripples. The cures: keep the hem narrow (less difference to ease); or ease the fullness in – sew a long machine stitch (4 mm) along the raw edge, 6 mm in, and pull the bobbin thread gently until the edge draws in enough to lie flat inside the fold, sharing the slight gathers evenly, then press and stitch. Press with the curve lying flat on the board; never drag the iron along a curved hem.

Marking on a person

A hem is level when it is an even height from the floor, not an even distance from the waist – bodies are not symmetrical, and cloth drops differently at seams and bias. So mark hems on the wearer:

1. The wearer stands naturally, in the footwear the garment will be worn with, arms down, looking ahead – not down at you.
2. Measure up from the floor with a ruler or metre stick to the chosen hem height, and place a pin at that height, parallel to the floor.
3. Move around the wearer (they stand still; you move), pinning every 8–10 cm at the same height from the floor.
4. Take the garment off, true the pinned line with chalk and ruler into a smooth curve, add hem allowance below it, trim the excess and hem.

Let a garment that may drop – bias cuts, loose weaves, flared skirts – hang for a day or two before marking, or the bias sections will grow below the hem later.

Letting hems down for growing children

School uniforms and children’s clothes are cut with deep growth hems for exactly this day. To let one down: unpick the hem stitching, press the old fold hard with a damp pressing cloth to erase the crease, re-press at the new depth and restitch. The old fold usually leaves a wear line – a faded or shiny crease. To hide it honestly: press with vinegar-water on a cloth (test first) to revive the crease line’s colour; cover the line with a row of decorative stitching, ric-rac, braid or a tuck, which on a uniform reads as trim; or fold a false hem – stitch a strip of matching cloth to the edge to add length when the growth hem is spent. A wear line half-hidden is normal and honest; generations of school skirts carry one.

• Make a card hem gauge: a strip of stiff card with notches at 1, 2.5 and 4 cm. Fold cloth over it and press – faster and more even than measuring with a tape at every point.
• Match the seams first when pinning any hem round a tube (trouser leg, kurta), then halve the gaps; fullness distributes itself.
• Press before you stitch, always. A pressed hem practically sews itself; an unpressed one fights at every pin.
• Trim seam allowances inside the hem diagonally below the fold line, so the hem is not lumpy at every side seam.
• Start stitching at a side seam, never mid-front, so the small join where stitching meets itself hides at the side.
• Overlap the stitching 1 cm where it meets itself, no backstitch needed on a loop – it locks itself and shows less.
• Thread colour test: lay one strand of the candidate thread across the right side in daylight; the strand tells the truth a reel never does.
• Sew hems from the wrong side so you steer the distance from the fold – the side you watch is the side you control.
• Stitch a scrap rehearsal of a blind hem at three bite widths and pick the one that shows least on this cloth.
• Heavy or springy hems: tack them up first and leave the tacking in until after pressing; pins alone let bias hems creep.
• A twin needle makes a knit hem with two parallel rows and stretch underneath – worth knowing when you meet T-shirt cloth, though wovens are this lesson’s home ground.
• Hang, then hem: any flared or bias garment hangs for a day before marking, or the hem you level today is uneven by next week.

The hem ripples and will not lie flat (usually on a curve).

1. Unpick, press the folds out, and re-hem narrower – half the depth, half the ripple.
2. If the depth must stay, run an easing thread along the edge and draw the fullness in before restitching.
3. Prevention: narrow hems on curves, eased folds, and the depth table above.

The hem looks level on the table but crooked on the body.

1. Re-mark it on the wearer, measuring up from the floor, and re-hem to the pinned line.
2. Check for a dropped bias section: if one area grew, trim the new line there rather than lifting the whole hem.
3. Prevention: mark hems on the person, in their usual footwear, after the garment has hung a day.

The stitching line wanders, showing on the right side.

1. Unpick the wandering stretch and restitch from the wrong side, eyes on the inner fold, foot edge as the guide.
2. Slow down: hem stitching is show stitching, sewn at half seam speed.
3. Prevention: press well, pin enough, and keep a constant landmark (foot edge to fold) the whole way round.

The blind hem shows dimples – or caught nothing and fell down.

1. Dimples: the bite is too deep. Unpick, re-fold, and move the guide so the bite takes only a thread or two.
2. Fell down: the bite missed the fold. Unpick and resew with the fold snugger against the guide.
3. Prevention: scrap rehearsal on the project cloth before every blind hem, and matching thread always.

The hem twists around a trouser leg like a spiral.

1. Unpick and re-pin with the side seams matched to each other first, easing the rest evenly.
2. If the leg itself is off grain, level the hem on the person and accept the compromise the cloth allows.
3. Prevention: match seam to seam at pinning, and check grain at cutting (Module 5).

A lump at every side seam inside the hem.

1. Open the hem locally, trim the seam allowances inside the hem diagonally, re-fold and restitch over the junction.
2. Press the junction over a rolled towel to settle the layers.
3. Prevention: trim allowances inside the hem before folding, every garment, every time.

The old crease shows after letting a hem down.

1. Press the line hard through a damp cloth (vinegar-water, tested on the inside first) – most of the crease lifts.
2. Hide what remains under a tuck, braid, ric-rac or a row of decorative stitching, placed as deliberate trim.
3. Prevention: on children’s clothes, hem with a soft fold and avoid scorching creases in; a gently pressed hem lets down cleanly.

You ran out of hem allowance – the garment is too short to hem at depth.

1. Hem narrow: a 1 cm topstitched hem costs little length.
2. Add a false hem: stitch a strip of matching or lining cloth to the edge, press it up inside, and hem that – no visible loss at all.
3. Prevention: decide hem depth before cutting and include it in the pattern length; write it on the pattern piece.

Mistakes

• Stitching an unpressed hem and steering wobbles all the way round.
• Measuring hems from the waist down instead of the floor up.
• Deep hems on flared skirts, then fighting the ripples the flare guarantees.
• Hemming a bias garment the day it is sewn, before it has hung and dropped.
• Contrast bobbin thread forgotten from the last project, appearing on the right side of the hem.
• Skipping the scrap rehearsal for a first blind hem on the actual garment.

Myths

• “Machine hems are the cheap option.” Shirts, jeans and most fine ready-made cottons are machine-hemmed. The skill is evenness, not the tool.
• “A blind hem is invisible on everything.” It hides best on textured, medium cloth in matching thread; on smooth shiny cloth, hand hemming or honest topstitching wins.
• “Deeper hems are always better quality.” Depth follows the edge: deep on straight, narrow on curved. A deep hem on a circle skirt is a mistake, not a luxury.
• “A let-down hem always looks let down.” Pressed and trimmed well, the line fades; trimmed with braid or a tuck, it looks designed.

1. Gauge drill: cut a card hem gauge and press a 2.5 cm double-fold hem along 50 cm of scrap, even within 2 mm, before any stitching.
2. The straight mile: stitch that hem keeping the line a constant distance from the fold all the way; inspect from the right side at arm’s length.
3. Narrow hem: a 3 mm double-fold hem along 50 cm of voile or fine cotton – guideline, press, trim, fold, stitch.
4. Curve: hem a half-circle of cotton (draw round a big thali) with an eased 1 cm hem – no ripples when it lies flat.
5. Blind hem rehearsal: three blind-hem samples at three bite widths on the same cloth; pick the winner and pin it in your notebook.
6. The real thing: level, mark and hem one garment on a real person, floor-up method, footwear on.

As a hobby: hemming is the gateway repair – the first fix most people attempt – and with this lesson you can also shorten your own new trousers and kurtas instead of queueing at the tailor. A card hem gauge and an evening of drills pays back for years.

For earning: hemming and shortening are the bread-and-butter of alteration work: high volume, quick turnaround, and judged entirely on evenness and a clean right side. Measure your time per hem type and build a method rate from it. The professional touches customers notice: marking on the person from the floor, pressing before and after, and asking about footwear before pinning a single pin.

For teaching: hems teach precision kindly – every fault shows, every fix is quick. Run the gauge drill as a race for evenness, not speed. For the blind hem, have students deliberately sew one too-deep and one too-shallow sample first; seeing both failures makes the correct bite obvious. Marking on a person is best taught in pairs, swapping roles, with a broom handle standing in for the metre stick if needed.

• Final press from the right side through a pressing cloth, and let the hem cool flat before the garment is worn or hung.
• Hang garments by the shoulders, not folded over a wire at the hem, or the hem creases into angles.
• Check hems at every wash: a hem beginning to fall is a two-minute catch and a twenty-minute re-hem later.
• Keep leftover hem thread wound on a card pinned inside the garment’s seam allowance for exact-match repairs years later – an old tailors’ courtesy.

• Is your hem depth right for the garment and the curve of its edge?
• Was the hem pressed to depth before any stitching?
• Is the stitching an even distance from the edge all the way round?
• On a curved hem, is the fullness eased so the hem lies flat?
• Was a worn garment’s hem marked on the person, up from the floor?
• Does the right side please you at arm’s length in daylight?

If all six are yes, your garments end as well as they begin. Next: shaping flat cloth to a body – darts, gathers and casings.

• Hem: a garment’s finished lower edge, folded and stitched.
• Hem allowance: the cloth provided below the finished length for folding up.
• Double-fold hem: folded twice so the raw edge is enclosed; the standard hem.
• Narrow hem: a tiny double-fold hem, about 3 mm + 3 mm, for fine or flared edges.
• Blind hem: a hem caught with tiny bites so almost nothing shows on the right side.
• Blind-hem foot: the presser foot whose guide rides the fold for a blind hem.
• Easing: drawing in a longer edge evenly, without visible gathers, to fit a shorter one.
• Growth hem: an extra-deep hem on children’s clothes, made to be let down.
• False hem: a separate strip sewn on to act as hem allowance when length runs short.