brunning

i've got some surly track hubs with longer (solid) axles (to accomidate installation on a frame with 130 spacing, i'd guess), but i've got them on a track frame with 120 spacing and find the excess axle sticking out the side to be a bit obnoxious.

i assume i can safely trim these down, but what's the best way - is a hacksaw going to take forever? should i seek out some kind of grinder?

thanks