A while back I was looking for easier ways of molding screens and such into plastic dash and trim pieces. I stumbled across liquid plastic from hzemall.com .
http://hzemall.com/catalog/product_info.php?cPath=22&products_id=31
This stuff is the chit man. It sticks to plastic, and sands very well. Reminds me of a body filler made for plastic. I highly recomend it. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif
