It's absolutely possible. There are specs on how to cut them from several sources not the least of which is Ivan Law's book on gear cutting.
The process is to set up your dividing tool at 45 degrees and with the proper tool, either involute or home made, cut the teeth. The process involves using a cutter that will cut the narrow end of the tooth with the proper width and somewhat of the right tooth profile. The dividing tool is then rotated by 1/4 of the tooth width and the cutter is offset by the following formula: pi/(4xDP). Lets say you have a DP of 48, then the calculation would be 3.1416/4x48 = 3.1416/192 = .0164.
Or you could buy them.
gbritnell