>>Another source...with a twist: >> http://www.leevalley.com/garden/page.aspx?c=1&p=50390&cat=2,50560 > > Sounds almost like the plastic used in soft drink or milk > bottles. Most of > those will go reasonably soft if filled with hot water. Quite different, alas. While such plastics do go soft they are far less able to be handled well at these temperatures. They MAY be able to be processed in a similar way at closer to 200 C. PET (Polyethyleneterephthalate) (used in softdrink bottles) is a very nice engineering plastic. Also hides under the name (surprise!) Dacron. Also POSSIBLY Arnite, Hostaphan, Impet, Melinar, Melinex, Rynite, Terylene, Trevira according to http://www.goodfellow.com/csp/active/STATIC/E/Polyethylene_terephthalate.HTML BUT as they also say it is called Mylar, which it isn't, and fail to distinguish it from Polyester (which it is related to), the page is suspect. Wikipedia has copied their error http://en.wikipedia.org/wiki/Polyethylene_terephthalate Dupont, needless to say, don't make the same mistake Russell -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist