I had some dummy builders who did not do the pointing on a section of brickwork. They left the mortar flush with the brick. The pointing has to be half round -or "bucket handle keyed"-. They are not coming back and now the mortar is hard.
I have tried the Dremel rotating tools, with a round profile, but even the ones made of Tungsten Carbide wear out quickly.
Does anybody know of a tool/technique to shape the mortar to give the proper pointing finish when it is already hard?