Dupes the stuff can be had from just about anywhere!!!! A good place to start would be Wal-Mart in the sewing section, or I found mine at th etiny sewing section in a supermarket, even a Hancock Fabrics, Michael's, Hobby Lobby, etc. Comes in clear and a smokey black color. HTH!!
Stretching sprue is as simple as holding a piece above acandle about 2-3 inches and rolling it back and forth, when it starts to go limp, move it away from the heat and slowly but steadily pull apart, practice till you got the right diameter!!! for hair fine stuff pull really fast!!! btw don't use liquid cement!, Don't ask!
HTH 2!!!
Cheers, Lt. Cmdr. Richie
"To be prepared for war, is one of the most effectual means of preserving the peace."-George Washington