I dont use the long snap blades anymore i use the long solid one piece razor blades, but this trick works with the snap blades as well. Instead of having to change your blades all the time, sharpen them. This takes like 5 seconds, is way way faster than changing blades, and works amazing. I havent changed my blade in about a year. Heres where i learned about this cheap tool:
This is turning into a pretty good discussion with a lot of good info. There is a harbor freight near where I work. I picked up a nice multi-purpose workbench from there the other day that I'm decking out with magnets and hooks to store tools and wires and such. I'll go back there in the next few days and look for that hot knife combo.
Also a quick note with the knife combo, the exacto blade it comes with is unusable, it is as dull as a butter knife, so make sure you get some spares when you get it. Other than that small mishap it works great!