• My problem is converting a path into a bezier, and a bezier back to a Grease Pencil again (or path to Grease Pencil), since I need the handle assistance in Edit mode for those to get my shapes just right, and free handing with Grease Pencil isn't accurate enough for curves to start.

  • From there, my second problem is turning at least 2 Grease Pencil Lines into the opposite edges of a corelative surface, using BSurfaces. I can't get Bsurfaces to run.

What state do 2 opposite beziers need to be in? Do you have to start from grease pencil only?

How do I get Bsurfaces to show me the Add Surface button, to draw it's extrapolation for me?

I've found the buttons, keys and mouse click too confusing here.


1 Answer 1


I'm not sure about converting back and forth between a grease pencil stroke and a curve, but you can create a surface from grease pencil strokes like this:

  1. Enable Bsurfaces in User preferences > Addons

  2. Create an empty mesh by adding a primitive and deleting all the geometry from edit mode > Delete:

    enter image description here

  3. Add a new grease pencil layer in the 3D view > Properties region (N) and select Surface:

    enter image description here

  4. Still in edit mode, (editing the empty object) draw grease pencil strokes on the target object with D+LMB:

    enter image description here

  5. In the Tool shelf (N in the 3D view), press Add surface in the Bsurfaces panel:

    enter image description here enter image description here


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