How do I make/where do I find grinders?

[ProfessorZ]

Man everytime I think I'm there close to making a weapon one more step stumps me WTF I NEED GRINDERS!@!!!

[CpwninOBrien]

need a grinder board or buy from players

[ProfessorZ]

what materials do i need to grind in a grinder board?

[VanHalen]

photons, wood, metal, a weapon( i think) and maybe other stuff

[A2K]

All you need is raw grinder material. The synthesis will "refine" it into something useable that you can bring to the grinding shops.

I believe both C and B grinder materials AND boards are available in the purple synthesis shop in Clyez City.