Originally Posted by Kevlarr
Is it a thread less head tube? If not a pipe cutter will just follow the threads and after a few passes with the tubing cutter you'll have a nice spring on the end of your head tube.
Cutting the head tube with a hacksaw isn't that difficult, use a vice or clamp it to something solid, take your time, measure twice, cut once and make sure the bearing nut is on the tube before you cut so when you take it off it'll act like a thread chaser.
sorry i forgot YES it is a threadless fork