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During stenter finishing, pins or clips hold fabric edges to control width and tension. The held selvage may contain punctures, flattened loops, edge curl, colour variations or other marks that should not enter cut panels. Buyers need an agreed usable width, not simply the machine's nominal set width.

Lightweight polyester layers can move over each other during spreading, marking and cutting. This can make bottom plies differ from top plies in shape or dimensions, even if the pattern is correct. Low surface friction, lay height, fabric tension, cutting speed and unsuitable clamping are possible contributors.

Electrical conductivity indicates how readily water carries current because of dissolved ions. Water hardness, in contrast, reflects mainly dissolved calcium and magnesium. Two waters can have similar conductivity but different hardness, with different implications for textile chemicals and deposits.

Two textile materials may match under one light source but look different under another because their spectral reflectances differ. This is metamerism. It commonly matters when polyester fabric, sewing thread, rib, labels and trims are dyed with different formulations.

Mesh fabric performance depends on open-area fraction, aperture shape, knit density, thickness and stretch. A visually open mesh often allows more air to pass, but a product's air-permeability result must be tested at a defined pressure difference—not estimated from a photograph or GSM alone.

Snagging is a protruding or displaced yarn or filament pulled from a fabric surface. Pilling is the formation of entangled fibre balls attached to that surface. The causes, visual severity and laboratory tests differ, so one good pilling grade cannot establish snagging resistance.

Positive yarn feeders deliver controlled yarn length to circular knitting needles. When a drive belt slips, a feeder may deliver a different amount of yarn from its neighbours, changing loop length, fabric cover and potentially creating repeated horizontal shade or texture bars.