Originally Posted by
FBinNY
The locknut may be unsuitable, because most have a tip lip and can only thread down 1/4" or so. OTOH an old headset's upper bearing makes a perfect guide. I only suggest an old vs. new bearing because some people have no ability to saw straight and end up scratching the guide pretty badly.
Originally Posted by
HillRider
I like the radiator clamp since it can't rotate while you are sawing. I didn't think about the lip on the locknut preventing it from threading on all the way so the top race is a better choice as a chaser/cleanup device.
I use 2 old upper bearing cups, one as the guide and the other to lock it in place. But I cheat, I use my reciprocating saw instead of the hacksaw, hold it lightly against the bearing cup and let the weight of the saw do the work. Nice clean square cuts every time, a little dress up with the wire wheel and you're good to go.