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I'm quite new to blender/modelling, and though I have made a few successful pieces previously, I'm having an issue in generating an object for 3d printing.

I am essentially creating a series icons, made up of straight lines. Here's an example of one: enter image description here

The idea is that the black lines will be basically a square rod, and all connected to make up the icon. This square rod needs to have the faces aligned with the plane the object sits on... Like this: enter image description here

I've traced the icon in blender using simple vertices linked together with straight lines. enter image description here

The issue I'm having now is when I try and give the shape some volume. This is a very basic and out-of-proportion idea of what I'm trying to get as a final product: enter image description here

Here, I've thrown this together by extruding the points up, creating faces an then insetting them, but the icon doesn't really have any physical volume, as it has no inner side wall or bottom face. Plus, the lines are all inset, instead of being equal on both sides of the line I really need to make it so that the lines all basically have a square tube around them all.

I've heard of people using bezier curves, and then beveling the lines to add thickness. This gives me several issues.

Firstly, the bevel comes out as a diamond, rather than a square, where the faces are all at 45 degrees to the plane the object sits on: enter image description here

Secondly, the lines are all different thicknesses and appear to taper along their length, which I have no idea how it happens: enter image description here

Finally, the corners of the shape have open ends, and I'm hoping to make it so that the object has sharp corners.

Any help with this issue would be much appreciated.

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There seems to be some sort of screwiness that goes on in the mesh when you create it from vertices. To combat this, after I traced the image using vertices, I converted it to a poly curve (Alt+C). I set the curve extrude function to "0.1".

enter image description here

Then I converted the curve back into a mesh (Alt+C) again, and Removed Doubles in edit mode.

When I added the Solidify modifier this time it worked perfectly as long as "Even Thickness" was checked.

enter image description here

Here is my finished product. The blend file is included below, feel free to use it for your project.

enter image description here

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    $\begingroup$ Hey TechTornado. Thanks so much for your response. This really helped! And thank you for including your .blend file for me to use. I followed your instructions, and it fixed a hell of a lot of the issues I was having. It's weird, I must have something screwy with my vertices or something, as with the corners I get some strange extension along the SW-NE kind of diagonal axis. It must be something I've done with my tracing, so I'll give it another go. In the mean time, your .blend will help me a lot for troubleshooting. Thanks again! $\endgroup$ – ChickenMacNugget Jul 19 '18 at 22:28
  • $\begingroup$ @ChickenMacNugget Glad to be of help. $\endgroup$ – TechTornado Jul 20 '18 at 2:46

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