A
Anonymous
Guest
having searched and not finding,the mother of invention visited me, im sure this has been done but thought i would post anyway.
suspend tubing from nylon line to ceiling, hang about 5 or 6 lbs from the bottom. start it spinning and apply heat gun or torch at the length you desire, when correct temp reached the warmed spot will start to look a little waspwaisted. gently pull down on lower part and maintain pressure, reheat as needed to achieve desired taper, i found that by using a tshirt and forefinger and thumb the restriction can be as tight as wanted. note the tubing gets thinner where stretched so use thicker wall if needed, keeping it spinning stops hotspots ensureing an even cone,have fun
suspend tubing from nylon line to ceiling, hang about 5 or 6 lbs from the bottom. start it spinning and apply heat gun or torch at the length you desire, when correct temp reached the warmed spot will start to look a little waspwaisted. gently pull down on lower part and maintain pressure, reheat as needed to achieve desired taper, i found that by using a tshirt and forefinger and thumb the restriction can be as tight as wanted. note the tubing gets thinner where stretched so use thicker wall if needed, keeping it spinning stops hotspots ensureing an even cone,have fun