Cutter Tools _T

Does anyone remember how the cutter tools work in the designlibrary?

It has something to do with a "_T.sldprt" at the end of the part.

I did it before, now I am not sure what to do with it.

I want to form a cutter part, that will make holes for bushings andvarious items. the cutter tool would have the clearances and therelated hole details.

Thanks

MichaelSolidworksGeneral