Sintra looks just like a sheet of styrene plastic. I'm using pvc tubing sliced in half and flattened out with a heat gun. Works the same and cheaper.
I can't get any sintra but i can get the pvc tubing across the street from my place. Go to Youtube.com and look up sintra boba fett armor.
There's a guy on there that works it like magic plus he polish it with some silver rub n buff.
This was brought up on another forum I participate in when someone mentioned PVC not to be a killjoy but it's worth mentioning
PVC - The Poison Plastic
PVC (polyvinyl chloride) plastic, commonly referred to as vinyl, is one of the most hazardous consumer products ever created. PVC is dangerous to human health and the environment throughout its entire life cycle, at the factory, in our homes, and in the trash. Our bodies are contaminated with poisonous chemicals released during the PVC lifecycle, such as mercury, dioxins, and phthalates, which may pose irreversible life-long health threats. When produced or burned, PVC plastic releases dioxins, a group of the most potent synthetic chemicals ever tested, which can cause cancer and harm the immune and reproductive systems.
New Car or Shower Curtain Smell? The Smell of PVC
PVC is useless without the addition of a plethora of toxic additives, which can make the PVC product itself harmful to consumers. These chemicals can evaporate or leach out of PVC, posing risks to children and consumers. New car smell? New shower curtain smell? That’s the smell of poisonous chemicals off-gassing from the PVC. One of the most common toxic additives is DEHP, a phthalate that is a suspected carcinogen and reproductive toxicant readily found in numerous PVC products. Children can be exposed to phthalates by chewing on vinyl toys. While it is still legal for US retailers to sell PVC children’s and baby toys containing dangerous phthalates, the European Parliament voted in July, 2005 to permanently ban the use of certain toxic phthalates in toys. One EPA study found that vinyl shower curtains can cause elevated levels of dangerous air toxins, which can persist for more than a month.
Resin is not "much" better, pretty much all plastics are hazardous by nature.
Info from this site:
http://www.besafenet.com/pvc/about.htm
Nasty stuff!
Sintra is cheap, easy to work with and can be formed using hot and cold water and retains it's shape, it does however become brittle with age and exposure to UV light.