That's very interesting! You redraw the sketch and used arcs in place of B-splines?

As indicated above, you should try to interrupt the automatic extension of the fillet along tangents by avoiding the very small radiuses. Make them to sharp corners and add fillets there later. I tried to do it only on the longer front part, and it doesn't work. Unless I don't understand correctly ...

Hi How do you want the extrusion to work with an open sketch Why make a B-spline when a radius is enough and more saft At home, a 1.5mm net works I know it can't work with open sketch, that's the purpose of my question, is there a way to close an open sketch once we find there some open end on some...

I finally found a way to have a close shape in a Sketch in order to do extrusion like I need to do the cut for the cable. If I use grid snap it work but if I do the same sketch without snap, the shape is not close. But now I'm still strugling with the fillet. I need to do a fillet on the front part ...

Ok, thanks for the constrain info. I'm starting to be more comfortable with the constrain. It look like a mess but it is full contrain. But now when I Extrude it, it make it like an open object. I looked with the zoom and that's the case. The shape is open on both end of the spline. I can't find how...

I can't see what is not contrained in that sketch.

I think that the problem with the sketch for the cable hole it's because me sketch is not completely contrained.

Here's the model I work on it. Openbrain, you are right about the cable direction. I didn't done the hole for the cable yet. I'm strugling with that too. I did a sketch to use for the extrusion for the cable path, but when I do the extrusion, it do only the edge of the object. I'm new to FreeCAD, so...

About the double extrusion, you are right chrisb, I did the APPLY and after that OK. If I do APPLY and CLOSE, I get only one extrusion. I did some tests with Fillet and it work if I do it with less than 1,00mm. I tried many size under 1,00mm and they all work up to 0,99mm. But as soon as I go over 0...

I did a 2D sketch and import it in FreeCAD. It gived me a BezCurve. Then I extruded it and I had Extrude and Extrude001. I selected a edge and did a fillet. I don't see any error in the Python console but I have an error at the Fillet in the combo view. BRep_API: command not done. As you can see, I ...