I have to design a 30" x 30" x 1" tk part with a pattern milled .25" deep. The part is to big for our CNC machine. I would like to brake the part into 4 15" x 15" parts when put them together make the part I want. The pattern is not simetical so I want to make the whole part and brake it up. How do I do this? I tried to make the 4 small pieces and create an assembly to cut the pattern but I could not cut away the material.