OUCH!

I hope you weren't in a full-on sprint when that puppy went.......................


As for the OP's query: I now have a pretty simple and effective method for trimming bars/tubing;

(NOTE: While this is a very delicate operation, requiring precision, it is NOT for the faint of heart.)

1) Lay the bars in question on a sturdy plank (short piece of 2x6 or railroad tie).
2) Take careful aim with axe or splitting maul
3) Whack IT! (you now have a nice pinch through the tube)
4) Clamp one end of now-pinched bar in bench vise and grab other end with channel-lock type pliers.
5) Rapidly bend bar back and forth 'till it fatigues and snaps at pinch point.
6) Now use ball-peen hammer, sidewalk, and file, to re-round pinched end of bar.

simple enough, huh? Well, at least it beats my old method...........holding the bar across a railroad rail and waiting for a train.