I'm getting ready to make gas checks with my new patmarlin 30 Cal check maker. I've bought the appropriate amerimax aluminum and now I need to cut it into strips. I have read where some people have used a paper cutter, like the ones we used to have in school. Where can a person track down one of these devices? And how quickly will the blade be dulled by cutting aluminum? I'm assuming that the blade can be sharpened.