Assessing fibre content without a label
The care label tells you what a garment is supposed to be made from. It does not always tell you the truth — blended fabrics are frequently labelled by the dominant fibre, and older garments often have no label at all. Before committing fabric to a project that depends on specific fibre behaviour (dyeing, felting, high-heat pressing), run a burn test.
The burn test is a standard textile identification method. Pull a few threads from an inconspicuous seam and hold them briefly over a flame with metal tweezers:
- Cotton and linen: burn steadily with an orange flame, smell like burning paper, leave a soft grey ash
- Wool and silk: burn slowly, self-extinguish, smell like burning hair or horn, leave a crushable black bead
- Polyester and nylon: melt rather than burn, form a hard plastic bead, smell acrid
- Blends: behave unpredictably — a 50/50 cotton-polyester blend will burn on one side and melt on the other
The burn test distinguishes natural from synthetic at a basic level but cannot differentiate linen from cotton or wool from silk without additional tests (a sodium hypochlorite solution dissolves wool; cold concentrated hydrochloric acid dissolves nylon but not polyester).
Evaluating fabric condition
Worn fabric fails in predictable patterns. The areas that take most friction — seat, elbows, collar, cuffs — thin and pill first. The rest of the garment may be structurally sound. Before cutting anything, hold the fabric up to a window or strong light source. Worn areas show as thinner, more translucent patches. Mark them with tailor's chalk so you can work around them when cutting pattern pieces.
Felted wool (from incorrect washing) is difficult to sew cleanly but has useful properties: it does not fray, holds a cut edge, and can be used as an insulating layer or appliqué without hemming. A heavily felted wool jumper that is otherwise beyond repair can be cut into geometric shapes for patching, oven mitts, or interlinings.
Deconstruction sequence
The goal in deconstruction is to recover as much usable fabric as possible in the largest panels. The standard sequence for a woven garment:
- Remove buttons, zips, and hardware before cutting anything
- Open the side seams and shoulder seams first — these give you the largest flat panels
- Remove sleeves by opening the armhole seam
- Open sleeve seams to get flat panels from each sleeve
- Address facing, lining, and interfacing last
A seam ripper is faster and less damaging than scissors for most modern factory seams. For serged (overlocked) seams, slip the seam ripper under the looper thread on the back of the seam and pull steadily — the whole seam frequently unravels in one pass. For topstitched seams with multiple stitch rows, work from the wrong side where the tension is lower.
Pressing and preparing salvaged fabric
Salvaged fabric panels need to be washed (if not already clean), pressed flat, and squared before cutting new pieces. Factory-woven fabric is cut on the grain during manufacturing, but deconstruction often introduces distortion. To restore grain: wet the fabric, pin it to a flat surface on the grain (using a grid cutting mat as a reference), and allow to dry flat. This is particularly important for linen, which relaxes significantly when wet.
Press seam allowances open rather than to one side — this gives you a flatter panel and more accurate measurements of usable area.
Practical reuse applications
The choice of what to make from salvaged fabric depends on two variables: the fibre content and the available yardage. A pair of men's denim jeans yields approximately 1.2–1.5 m² of fabric after deconstruction, depending on the cut. A woman's summer dress in cotton lawn may yield 2–3 m². Common applications by fabric type:
- Heavyweight denim: tote bags, apron panels, woven rag rug weft strips
- Shirting cotton: patchwork, quilting, embroidery base fabric
- Wool suiting: bag structures, interlinings, small accessories
- Linen blend trousers: tea towels, produce bags, embroidery ground
- Jersey knit: t-shirt yarn (cut in a continuous spiral and used as weft in chunky weaving)
T-shirt yarn for weaving
Jersey fabric cut into continuous strips makes a viable weft material for rigid heddle and tapestry weaving. The strip width affects the yarn diameter after the cut edge rolls: 1.5 cm strips of standard jersey roll to approximately 0.8–1 cm diameter. Cut from the hem upward in a spiral, avoiding seams and printed areas. The resulting yarn does not need finishing — the rolled edge is stable.
Woven t-shirt yarn projects are sett at 2–3 ends per cm and work well on a rigid heddle with a large dent size (usually sold as "super bulky" heddles). The resulting fabric is thick, durable, and machine washable if the original jersey was.
Where to source worn garments in Poland
Textile banks (pojemniki na odzież) operated by PCK (Polish Red Cross) and Caritas accept clean clothing and redistribute or sort for textile recycling. For bulk fabric sourcing, industrial textile sorters in the Łódź region — historically Poland's major textile city — sometimes sell sorted fabric lots. Second-hand markets (pchlitargi) in Warsaw (Hala Kopińska), Kraków (Hala Targowa), and Wrocław (various locations) are reliable sources of woven natural-fibre garments at low cost.
Sources: Ellen MacArthur Foundation — Circular Fashion; Aalto University Textile Research; Polish Red Cross textile collection network.