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I’m again here to ask your support. I’d like to draw a 3d-print someting similar to “tower of pi” but instead of using numbers, I’d like to use a musical score, let’s say beethoven fifth symphony.

I have a picture (B/W image) of what I need:

enter image description here

I would “extrude” black portion of musical score, wrapped around a cilindrical shape.

Is there some way to use a displace modifier in order to use mi musical score to be wrapper around a spiral?

Thank you very much as usual! Francesco

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  • $\begingroup$ Related blender.stackexchange.com/questions/23411/… $\endgroup$ – Duarte Farrajota Ramos Jul 10 '18 at 11:43
  • $\begingroup$ If the goal is 3d printing you might want to try tracing the image on a vectorial graphics program (like inkscape or illustrator), conveting the bitmaps to paths and saving as SVG. Then import the SVGs into blender and bend them using a curve or bend modifier $\endgroup$ – cegaton Jul 10 '18 at 16:44
  • $\begingroup$ Thank you for your suggestion, I used inkscape and vonverted, I'll update my post with result of my work. $\endgroup$ – Francesco Jul 11 '18 at 9:34
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I had a quick go.

Took the source image into GIMP and made it one long line.

Imported that image into Inkscape and used Path/Trace Bitmap to create the vector data, then saved as SVG. See notes at the end.

Used import from the File menu in Blender enter image description here

Then extruded the curve. I also converted the curve to a Mesh and used the ReMesh Modifier to stop some bad geometry where vertices where connected from great distance.

From the User Preferences view I searched for Extra and selected the Curve: Extra Objects enter image description here

Now I could add a new Curve and select the type Spiral and Logarithmic. Set the height and the number of turns to create the spring shape.

In the Curve panel ensure the Twisting is set to Tangent. This ensures the results do not twist as they are modified by the spiral. Without this you get an unpeeled orange effect. enter image description here

Now you can add a Curve modifier and select the Spiral. enter image description here

The final result. enter image description here

Notes: The image was not particularly high resolution and made the initial vector data quite messy.

I needed to remesh the curve to get the vertices density required to allow the curve to take place.

There are lots of disconnected pieces, not ideal for 3D printing.

My basic result has obvious sharp ends that would need additional work to create a clean cylinder.

Suggest you take a lot of time to create nice neat/clean vectors before trying to extrude/curve.

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