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I would like to 'draw' a basic 2D mesh of any shape using my mouse. I've read advice on using grease pencil, but if I use grease pencil and convert to a mesh it seems to have lots of different properties and the mesh doesn't behave normally at all. I feel like this would be a straightforward feature that a lot of people would want as it would save a lot of time, so maybe i'm missing something?

For example I want to create the outline of a beer bottle (or any shape using a reference photo), and have as simple a mesh as possible? Instead of creating a basic object and manipulating it.

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I would argue that this approach doesn't really save too much time, since handdrawn shapes must be cleaned... manually. But I concede that it's probably suitable if you're just making a sketch!

Anyway: you can definitely do it using grease pencil! What is the problem you're experiencing?

This is a possible workflow. Precondition: use Blender 2.80 or newer.

  • Add > Grease Pencil > Blank
  • Get into an orthographic view (e.g. Front Ortho)
  • Entrer "Draw Mode", draw; then go back to "Object Mode"

  • Right click on your object > Convert to Bezier Curve

  • In the Outliner, hide the grease pencil object and select the newly created Bezier curve.

    In my version, I have a little bug whereas the Bezier is not immediately visible. Hop in and out of Edit Mode (Tab) to make it visible

    enter image description here

  • Your curve has probably too many handles. To reduce them, enter "Edit Mode", select all the handles (A), then do Right Click > Decimate Curve. In the box that appears, select a suitable value.

    enter image description here

  • To avoid your mesh to have still too many handles, go in the Curve settings and change Resolution Preview U to 2 or 3
  • Right Click > Convert to Mesh
  • You've got your mesh! You can use it as any other mesh. For instance, you can use the Screw modifier

    enter image description here

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  • $\begingroup$ riiiight ok, that's great thanks. Yes if I follow your instruction exactly then it works perfectly. I think i was basically converting the grease pencil directly to a mesh. Which would appear to give me what i wanted, but whenever i would go into edit mode it wouldn't give me all the 'mesh' options, it would just give me the same options as grease pencil. Couln't figure it out! great thanks :) I'm not to worried about clean up right now, planning to use this for some 3D printing reasons, so basically just looking to draw a 2D shape then give it some depth so i can print it. $\endgroup$ – ANDYSAWRUSS Dec 18 '19 at 18:33

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