What is PET?

[postmahomeson]

i got you a good source and all the infomation and technical features you want to know ( including safety )
http://www.chemspider.com/Chemical-Structure.11972.html

and if you are getting it from ocean plastic make sure it is purified because of potential water pollution,
but it certainly is a researchable topic ,

also you are a smart person for checking the material before melting take for example pvc ( poly vinyl chloride)
which poly vinyl is safe enough but the only part of PVC that is dangerous is the chloride ( i mean unless you use Poly vinyl with high plasticisers with toddlers that would suck in all the plasticiser and what ever ) other than that you should be fine as long as you do not litter