why is it that aluminum used for materials like airplane parts, packaging, and cooking utensils?
The definition of blocking is processing using moistureSo you can steam, or wash, or mist, or whatever you need to do to get water into the fibresMost people think that it also means to stretch the dickens out of your knitting, and that is not necessarily soYes, ALL of your knitting needs to be washed when you are done with the knittingIt helps to even out the tension of your stitches, and makes your work very professional lookingAlwaysIt also helps to make your pieces the right shape and size so that sewing up is easierSome things need to be stretched to open up the stitches and you can see the lovely designLace in particular is only at its best when stretchedI often stretch my lace to the very limitand nothing has ever snappedThey do look great that waySome things, like sweaters or scarves, only need to be laid flat to dryAt most, you can hand-smooth and push into shape, but that is allDo you need to do this every time you wash? Not alwaysLace shawls and the like usually look best when dressed - that is, stretched into shapeBut how often will you be washing your lacey shawls? Other things, like scarves or mittens, usually can just be laid flat to dry and that is allYou may want to pull a sweater into shape a little, just to freshen up the corners, and make it look finishedAll of this depends, of course, on the fibre contentSynthetics usually don't respond to blocking at all, and is a waste of timeBut wools are always at their best when blocked appropriately - and shows off your knitting skills the best!
Aluminium is a soft, lightweight, malleable metal Aluminium is nontoxic, nonmagnetic, and nonsparkingIt is also insoluble in alcohol.The yield strength of pure aluminium is 7–11 MPa, while aluminium alloys have yield strengths ranging from 200 MPa to 600 MPaAluminium has about one-third the density and stiffness of steelIt is ductile, and easily machined, cast, and extrudedCorrosion resistance is excellent due to a thin surface layer of aluminium oxide that forms when the metal is exposed to air, effectively preventing further oxidation.
Look at the yarn you are using! Some of the synthetic yarns say self blocking so you don't have to ever block unless you are going to put it in a show for judgingIf it is a yarn that does not say self blocking then you need to make a plastic template of the sweater or other garment and block it every time you wash it I block only wool, mohair, llama, alpaca etc as they are natural fibers, must be handwashed and blocked every time.