The 3D model doesnt know the size and type of cutter you will need to use, what directions you want to use to cut it or how tight you want the resolution. You have your 3D model, which defines the shape that you want to cut but it doesnt tell your CNC tool how to cut the shape out. Plane_no = mwi.to_3x3() cu.matrix.to_3x3(). Now that you have your 3D model you will need a toolpath.

# convert cursor coordinates to object space Left.append(f) if dp2p(f.calc_center_median(), plane_co, plane_no) > 0 else right.append(f)įor the case in question to create new edges at cut and set materials left and right.Įxample script append to above and run in object mode context = bpy.context Geom=bm.faces + bm.edges + bm.verts,Ĭut = if isinstance(e, )] import bpyįrom mathutils.geometry import distance_point_to_plane as dp2pĭef bisect(bm, plane_co=(0, 0, 0), plane_no=(1, 0, 0)): a blatant attempt to improve my people reachedĪ plane has been used as a visual tied to cursor orientationĮxtended the bmesh bisect plane operator to return the left and right faces, and the cut's edges. This one popped up today so what the hey. We used to have a procedure to cut a mesh using a plane in Blender 2.4, but it involved using mesh boolean tools which appear to have been replaced, and I can't figure out how to adapt it.Ģ.8x bmesh version. (The details were too fine to be reliably selected with any tools I know, such as the C circle select tool.) I tried using the B selection tool, but it only selected the faces on the near-side of the mesh. Even when they were, after the cut was finished I couldn't figure out how to select only the faces on one side of the cut. I've tried using the K knife tool in Z cut-through mode, but the cuts haven't been reliable.

How can I do this in the current versions of Blender? To do this, I need to split the any faces which intersect this plane, and select all faces on one side of the plane so that I can apply a material to them. Note that it does not necessarily intersect the centre. A potential plane is indicated here as a blue line. I would like to apply Material A to the section of the mesh which is on one side of a given plane, and apply Material B to the section of the mesh which is on the other side of that plane. I have a mesh which I have imported from an OBJ file.

How to cut a model of in simplified 3d