Coin Weights for Sewing: Protect Softshell, Silk and Leather

Anyone who works with silk, softshell or leather knows the issue: every pin can leave irreversible damage. Professional studios therefore use a remarkably simple trick: unwanted coins are repurposed as small weights that secure pattern pieces without touching the fabric with a pin. Apparently worthless metal becomes a precise sewing tool.

Why coin weights are so popular for sewing

Many homes have a jar of old coins tucked away somewhere. Foreign currency, obsolete currencies, bent pieces or heavily worn coins can no longer be spent. In sewing circles, these very coins become useful workroom supplies: they are used as pattern weights, holding a pattern in place on fabric without any pins.

Coin weights keep fabric and patterns securely in place, without holes, pulled threads or damage to the fibre structure.

Textile technology specialists have long advised using as few pins as possible with delicate or technical materials. Every puncture can create a micro-perforation. It may not be visible straight away, but it permanently weakens the fibre.

Typical troublesome materials include:

• silk, chiffon, organza and other exceptionally fine fabrics
• softshell, performance fabrics and coated outdoor textiles
• leather and faux leather
• oilcloth, coated cotton and other coated fabrics
• fine jersey and knitted fabrics

For rain jackets or softshell jackets, every pin becomes a potential problem: each puncture can later allow water through. Leather retains every hole like a scar, while silk can quickly tear or develop runs. This is exactly where coin weights prove their worth, keeping everything in position through weight and friction alone.

Before making them: which old coins can you actually use?

Before putting coins in the sewing box, it is worth checking whether they have any value. An old currency is not automatically scrap. Some pieces may still interest collectors, while others retain at least a metal value.

Collectors use a rarity index from 0 to 100 for this purpose. A low figure means that a coin is common and therefore usually less sought-after. For example, in numismatics, a widely available silver coin with an index of 4/100 appears very frequently, though it still has a silver value.

This is the dividing line: coins containing precious metals do not belong in the sewing drawer. They should be assessed first and, where in doubt, sold or kept.

Rule number one: sort first, make later – never the other way round.

Many common candidates for the sewing room are made from cupronickel, a copper-nickel alloy with no significant precious-metal content. These coins are ideal working materials:

• old circulation coins with no silver content
• foreign cents, pfennigs or other small-denomination coins
• visibly worn, scratched or tarnished pieces
• coins produced in huge quantities that nobody collects any more

The important point is that coins are neither drilled nor heavily reshaped. They are stacked and covered, while remaining recognisable as coins. If a particular series later turns out to be collectable, it can be removed from the fabric covering if necessary.

The ideal weight for effective pattern weights

In practice, a clear range has emerged: pattern weights for everyday use should weigh 40 to 60 grams each. This is enough to hold a pattern piece securely without distorting the fabric.

A straightforward calculation helps with planning. If a typical old coin weighs around 10 grams, stacking four to six coins produces the ideal weight for one sewing weight.

A useful rule of thumb:

• light, slippery fabrics (silk, chiffon): closer to 40 g
• standard woven fabrics (cotton, linen): 50–60 g
• firm fabrics (denim, canvas, coated fabrics): place several weights close together

The total weight is not the only consideration; how it is spread across the surface matters too. A broad, flat weight offers greater stability than a narrow, tall stack.

Step by step: sewing coin weights for your sewing room

These useful tools can be made from just a few leftover materials found in the sewing room. Here is the process.

1. Clean the coins

Old cupronickel coins can smell unpleasant or become tarnished. A quick clean is sufficient:

• soak them in lukewarm water with a little washing-up liquid
• briefly scrub them with an old toothbrush
• rinse thoroughly and allow them to dry completely

Use only completely dry coins, otherwise moisture may build up inside the fabric parcel later.

2. Build the coin stacks

Next, make small coin towers, using four to six coins according to the desired weight. For exact results, keep kitchen scales nearby and check the gram weight. Ideally, all weights in one set should be similarly heavy so that they perform consistently.

3. Add a non-slip layer

An intermediate layer stops the coins rattling inside and prevents the outer fabric from sliding about:

• wrap a strip of masking tape around the stack, or
• place a small circle of felt or thin cork sheet at the top and bottom

This keeps the coins stable and prevents constant metal-on-metal rubbing.

4. Sew the fabric covers

Cotton or linen offcuts are suitable for the cover. Squares measuring around 10 × 10 centimetres work well. The method is as follows:

• cut the fabric pieces, optionally turning and finishing the edges
• position the stack of coins in the centre
• fold in the corners as though wrapping a small present or sweet
• stitch the edges closely with a sewing machine or by hand

The result is a compact fabric parcel that sits comfortably in the hand, has no sharp edges and encloses the coins securely. Many sewers deliberately choose colourful fabric scraps, making the cutting table easier to organise while adding some colour to the studio.

Using coin weights on softshell, silk and leather

Their benefits become apparent very quickly in use. Consider cutting out a softshell rain jacket: if the pattern is secured using pins alone, tiny puncture channels form in the membrane. During prolonged rain, water can gradually force its way through these points.

Anyone sewing performance fabrics should keep punctures to an absolute minimum – ideally only along seams, never at cut edges.

With coin weights, the approach is different:

• lay out the pattern and smooth it flat
• position weights along the outer edges and at the corners
• add weights at the centre of long, straight lines
• mark seam allowances directly with tailor's chalk or a fabric marker
• cut the fabric using a rotary cutter or scissors, without piercing anything

On silk, fine viscose or jersey, the weights prevent the fabric from shifting or becoming distorted during cutting. Sewing pins would quickly leave runs or visible holes in these materials. Coin parcels apply pressure only from above, leaving the structure intact.

Leather is particularly delicate: every puncture remains visible because its fibres do not spring back. Pattern weights avoid the issue entirely. Anyone wishing to use even fewer pins while sewing can use Wonder Clips or clamps, piercing only seam allowances that will later be hidden.

Practical everyday tips for the sewing room

A little organisation helps coin weights do their job well for a long time:

• Storage: keep them in a small box or basket beside the cutting mat
• Weight range: have several lighter and several heavier weights available
• Shape: make them flat and broad rather than stacking them tall and unsteadily
• Marking: use different colours for different weights

Those who regularly work with large patterns, such as coats or curtains, benefit from extra, slightly heavier weights. For small pattern pieces, including bags or facings, miniature versions containing two or three coins are sufficient.

Why the effort can make financial sense

Ready-made pattern weights can be fairly expensive, especially metal versions or those with special designs. Old coins and fabric offcuts can achieve virtually the same effect at almost no cost. It also means less material goes into the bin, which is a clear advantage from a sustainability perspective.

At the same time, the risk of ruining costly fabric is reduced. One unsuccessful cut from pure silk can cost considerably more than all the homemade coin weights put together. When working with softshell or leather, this method also protects the material's technical properties, including water resistance.

There is another benefit: the weights are just the right size to serve as an improvised paperweight, book support or photograph holder at the workstation. In this way, old coins become genuinely useful again in everyday life – simply in a very different way from their former role at the supermarket checkout.