[Ray Rogers]

There is one way to make jimping that absolutely does work and that is simply use a file that is specifically made for that purpose and that's called a checkering file. These are expensive files but they last for years if you don't try to use them on hardened steel. They are available from most of the knife supply places. You have seen what they do on most any commercial pocket knife that has a jimped thumb space on it (see one of mine in the attached pic) or on the checkered front strap of some pistols with that feature...