Of course it would be the best to have a CNC machine to make grips.
BUT: It would be no problems to make grips in an old copymilling machine.
They used to come in different variations both 2 dimensional as well as 3 dimensional.
If i were up to gripmaking i would use one of those machines as they are outfashioned and almost can be had for free secondhanded.
Regards HÃ?Â¥kan
http://www.vapensmedjan.com