textiles mock exam Flashcards
what are the 3 main types of metal?
-mild steel
-steel
-cast iron
what are the 3 main types of metal?
-mild steel
-steel
-cast iron
what are the 4 properties of non ferrous metals?
-do not contain iron (ferrite)
-not magnetic
-do not rust
-can oxidise which changes the colour of the surface
what are the 4 most common non ferrous metals?
-copper
-gold
-silver
-platinum
what are the 3 properties of alloys?
-result of two or more metals mixed together (at least one is pure metal (non-ferrous)
-metals are combined to improve working and aesthetic properties
what are the 4 main alloys?
-brass
-stainless steel
-tungsten
-colbalt
why do some fabrics need to be strengthened or reinforced?
so they don’t lose their shape or break during use
what does carded and spinning mean?
carded: combining staple fibres so that they all lie parrallel to each other ready for spinning into a yarn
spinning: twisting fibres together to make yarn
what factors affect a textile material?
-combination of fibres used
-the type of yarn
-any fabric pattern or special finishes
why is accuracy required?
to ensure a high-quality product
what factors are important for accuracy?
-clean and free of creases
-use a pattern template to ensure the fabric is cut to the correct shape and size
what should factors should you always do when shaping and forming
-place the grain line on the straight grain of the fabric
-when folding fabric to get a double layer both selvedges must be placed exactly on top of each other to keep grain correct on both layers.
-pattern must be pinned flat to the fabric to stop the fabric moving
-marking on the patterns need to be transferred to the fabric to show
how the product is to be made and indicate where pckets or buttonholes would be. the markings can be transferred using chalk, a tracing wheel or tracing paper.
what are the three main seams?
-plain seam: flat and not seen on the outside of the product.
-french seam: sewn twice so all the edges are enclosed and is not visible on the outside of the product
-double stitched seam: strong and flat with all turnings closed
what are the three main types of pleat?
-knife pleat- single folds facing the same way
-inverted pleats- two knife pleats facing each other
-box pleats- two knife pleats facing away from each other
what is gathering?
fabric drawn up using thread to reduce the length of the fabric