The solution to the implicit 3D equation abs(cos(x)+cos(y)+cos(z))<0.35, graphed from -9 to 9 on all axes. EDIT: New file named "yus2.obj", resized, smoothed a bit more. EDIT: I think it would be cool if someone put marbles in the holes while this was printing.Made this by filling a 3D boolean array with values taken from equation, placing planes on "edges" where values changed from on to off or vice/versa, putting the data into blender, removing duplicate vertices, applying a laplacian smooth to object and exporting as a .obj file.