i figured i would make a new post about this to address safety issues in making record bowls. i've worked with a few environmental groups concerning the issue of vinyl and its environmental hazards, in case you were wondering how i know all of this-
records are made of VINYL. vinyl is made of PVC (polyvinyl chloride) which at extreme temperatures is very dangerous because it releases a toxin called dioxin. i wouldn't necessarily worry too much about your dioxin intake with this particular project, because it the heat isnt all that extreme and the most danger of vinyl is in the actual production of it. remelting it isn't nearly as dangerous, but you will have some dioxin exposure. probably not too much more than you would get from eating a meal or using a tampon. but the thing about dioxins is it is accumalative and builds up in fatty tissues. most people aren't ever expose to large amounts of dioxins at one point, its the build up of dioxins in our bodies which has been linked to cancers, birth defects, asthsma and other health problems. i would definately not recommend eating out of a record bowl because it could easily leak into our food and honestly, our food has enough toxins (including dioxin) already. this is not the type of activity you would want to do with children because they are more susceptable.
it wont kill you (right away),, but it's not very good for you either. unfortnately, vinyl is everywhere and its manufacturing plants are constantly polluting and slowly killing many people.
"PVC - the Poison Plastic
PVC is the worst plastic from an environmental health perspective, posing major hazards in its manufacture, product life and disposal. Dioxin (the most potent carcinogen known), ethylene dichloride and vinyl chloride are unavoidably created in production of PVC and can cause severe health problems, including cancer, endocrine disruption, endometriosis, birth defects, and many more problems. As a persistent bioaccumulative toxin (PBT), dioxin does not break down rapidly and travels around the globe, accumulating in fatty tissue and concentrating as it goes up the food chain. Dioxins from Louisiana manufacturing plants migrate on the winds and concentrate in Great Lakes fish. Most poignantly, dioxins concentrate in breast milk to the point that human infants now receive high doses, orders of magnitude greater than those of the average adult. PVC is useless without the addition of a plethora of toxic chemical stabilizers - such as lead, cadmium and organotins - and phthalate plasticizers, which may leach, flake or outgas from PVC over time, raising risks that include asthma, lead poisoning and cancer."
for more info on dioxin and pvc, check out these links-