I have imported an SVG into blender, and I want it to be a circular object:spin:.
The black object is the imported SVG, and the circle is the object I want to extrude following SVG(curve) :
You can see here that if I extrude the circle, it don’t follow the curve SVG object :
But if you have an another idea to transform the SVG in 3d circular object tell me.
How can I do that ? Thanks !
Just uze a bezier circle as a bevel object,And make sure the curve the circle follows is not cyclic, meaning it’s an open curve not a closed one. You can also bevel the object buy changing fill to ful and adjusting the bevel depth and resolution as you’d like. I already made what I described, here’s the downloadable .blend file.
Excuse me, I didn’t explain well. In you example you have used a path to extrude but I don’t want to do this.
In this image I have do some circles that the extrude tool have to follow :
I know it’s difficult to understand, but I hope that there is a way to make it. Thanks.
It’s not as difficult as you tell to understand what you want, it’s just that your 3d interpretation of the form you see in 2d image is a bit different from what others might see there. All because there is no definition of 3d object in that image. There is a notion of 3d which is not enough to precise modeling. There might be interpretation and realisation of the perspective of the author of that image, he might have depicted object incorrectly can you rule this out? Do you have images drawn from other point of view to tell that cross sections are circles?
Be free and interpret what you see as you understand this, use tools available in Blender to construct scene in 3d.
What i see here e.g. is something similar to the wing or tail of the aeroplane which you could easily model using a default cube, bevelling and some proportional edit. Make one, place and orient in the Camera viewport, make approximations of other objects and their sizes.
If you insist this is the right shape and want to use circles as a cross sections use Bsurfaces. Delete circle faces, convert edges to curves, join them into one curve. Add a Plane, select Curve and Shift select Plane, press Create Surface button on T panel while tabbed into edit mode for Plane, provided you have checkmarked Bsurfaces in User Preferences.
Note that you need to select circle curves in ordered fashion (top, bottom or vv) for joining, otherwise Bsurfaces will fail to generate a correct mesh.
Sorry but I didn’t understand… Why I have to do a plane ?
You could have easily done this with simple box modeling, that is by tracing the bezier lines with a cube and then adding a SubSurf modifier to it. It can’t get any easier than that. After that you can select edge loops of the curve and using loop tools make them into a straight circle.
Bsurfaces do work on a mesh - creates mesh object using Curve (consisting of several splines) as a guide. It needs two things initially Mesh object and Curve. Plane is a created object’s ‘container’. After object is created, select plane vertices and delete these.
However as Ognjen and me have suggested - Cube can be a good starting point.
I have started unsing cylinder, but I think I will use a cube.
Here is the result with a cylinder :
@@MediumSolid How to use a bezier curve with a cube ?
Before I used Sketchup, I’m new in Blender modelisation.
The bezier curve only serves as a reference for extrusion/path tracing of the cube.
The cube itself doesn’t even have to have a lot of geometry to it since the SubSurf modifier will add the needed geometry and as well as smooth it. I also mentioned that you need to have loop tools add-on for that or you could just use an eight sided circle(octagon) that you’ll extrude and scale between the curves outline.
Don’t wanna sound like an asshole but I feel like this problem should have been dealt with along time ago. The OP should have realized that firstly he should learn a little more about blender and it’s functions before trying to model something in a way that is not possible in blender. Acceptance of blender’s technical limitations is one of the keys for successful modeling.
Go ahead and crucify me for this.
“Acceptance of blender’s technical limitations is one of the keys for successful modeling.” This will come. Each software is different somehow.
To annoy even a bit more - how about some old fashioned drawing a bit, paper, pencil, cube, sphere? 
But GL, anyways.
Actually eppo, learning to draw not only basic primitives but complex hard surface and organic stuff as well as learning to draw humans, animals etc. with deep understanding of their anatomy is also one of the keys for easier time with any 3D modeling sotware. People, especially little kids, tend to think that 3D modeling is easy as first grade math but even though it isn’t technically a rocket science it still takes a lot of time and dedication to learn it. The first mistake every new comer and even a long term user make is that they heavily depend on tutorials and they only want to learn to make something by copying someone elses workflow. To be good in anything not just 3D modeling you need to learn and understand why something is made/functions the way it does and not just how it’s made.
The funny thing is while we tend to use “3D” a lot it’s all 2D, flat as a sheet of paper from a stack. It wasn’t, somehow, back when monitors had CRTs :D. Well, yeah, drawing…
Well actually it is 3D in every sense. Just because it’s projected onto a flat screen doesn’t make it 2D, besides, 3D has x,y and z axis. It’s used for 3D printing.
NOTE: for modelling what I want I have found a loft tool, it’s very powerful and easy.
But thanks anyway, you are very helpful !
Where did you find that, in Maya?
some goods points but based on my experience in CAD world
i’v seen peoples very good at 2D drawings and unable to do anything in 3D!
I mean some peoples have a 3D brain others don’t
it is a totally different medium
and need a lot of practice to learn the tools
tutorials are fine when your stuck with something and learn some tricks
if you can find the right one !
also human’s brain are not PC computer running a program
each one has it’s own way to assimilate things and it is not a logical path!
happy bl
