Need a little help extruding an Illustrator file

[figure1a]

I am having a heck of a time trying to extrude and chamfer a shape that I made in Illustrator. Playing around with the file either says it cannot extrude or gives me weird results. Could anyone extrude the shape to .25" tall and then put a .225" chamfer all the way around it for me? I need the file to be a solid when done so I can further add and subtract a few more shapes from it. I have attached 3 files: the Illustrator file, a DWG of the Illustrator file and another DWG that is already extruded to .25". Thanks!

[figure1a]

Here is the shape extruded:

[maxim_k]

Hi @figure1a ,

>>>>>and then put a .225" chamfer all the way around it for me?

I'm afraid this is an impossible task. The result is a heavily distorted 0.225" chamfer:

See attached DWG

[figure1a]

Hi Maxim, thanks for taking a look. Maybe Chamfer is the wrong operation? Basically, I want it to look like someone took a knife and cut the edge off all the way around at a 45 degree angle. Surely, this is possible?

[maxim_k]

Hi Dana,

Have you seen the result in the attached drawing?

AutoCAD refuses to "cut" the edge with the given parameters, so I created a LOFT, but you see the distortions that appear as a result of such an operation.

[figure1a]

Hi Maxim,

I did see your pic. I think maybe the way that I converted the AI file to DWG is creating many little faces and therefore the chamfer is failing (see pics below). Do you know the correct way to convert the AI file to DWG? When I export the AI file to DWG it results in the first DWG file that I posted. For some reason it makes all those faces (in Illustrator my shape is very simple and has less the 10 control points). Is there a way in AutoCad to remove all those faces or simplify those curves? Maybe if that can be done then the chamfer would work.

[figure1a]

So, I figured out how to eliminate all those faces. Do you think this is still unchamferable? New DWG file attached.

[maxim_k]

Hi Dana,

Does the red Solid is what you want to get?

See attached drawing.

[figure1a]

Yes! How did you do it? AutoCad would not let me ChamferEdge at all. Thank you!

[maxim_k · Accepted solution]

---

@figure1a wrote:

Yes! How did you do it? AutoCad would not let me ChamferEdge at all. Thank you!

---

At first I recreated the base shape with PLINE command, because SPLINES from AI seems extremely complex for AutoCAD.

Then I simplified the base shape by removing filleted corners and created EXTRUDE from it, then I was able to use CHAMFER command with 0.225 distance (see white Solid in my drawing).

Then I used FILLET command with desired radius on the corners of the Solid:

[alastair_leith]

I've been having similar issues with AI files coming in as SPLINES, even when the paths are simple circle arcs and straight line sub-paths. SPLINEDIT does the conversion of Splines to Polylines.  

[figure1a]

Thanks. That's one of the processes that I use but still had no luck here. Sometimes the SplineEdit conversion distorts the shape. Other times, like this, when I extrude it to a solid, it does not behave like a solid.