Sketch seems to ignore curve

[Anonymous]

I have been trying to create a puzzle today and I came across a problem where sometime these edge pieces seem to ignore a line, as far as I can tell, all the lines are connected and the sections should be separate. I can place a line to see it seems to not like the bottom-right corner for whatever reason, the only solution I have found is to delete the last segment of the curve and re-draw it by hand, I will do that but I would rather know an easier fix as I will be making lots of these...

Thanks for any help...

[laughingcreek]

Are thee imported, or did you draw them in fusion?

[Anonymous]

It is imported from a DXF, however the lines it doesn't ignore were created with the offset tool

[TheCADWhisperer]

@Anonymous

Can you File>Export and the Attach then *.f3d file here?

[Anonymous]

Here it is, Just note that I have fixed some of them by drawing them with a spline

[TheCADWhisperer]

I can get a closed boundary by Projecting the edges into a new sketch.

But the one edge causing the issue is not an orthogonal projection.

I suspect that there was a Z component in the original dxf.

Can you attach the original dxf here?

[Anonymous]

I had used a plugin for Inkscape so I guess thats what caused it.

[laughingcreek]

I don't know if it's bad source DXF's, or if it's the process fusion uses to import them, but importing curves into fusion has always been problematic.  I think it's fusion's import process.  It always seems hit or miss on whether you can use imported curves directly without rebuilding.  I ALWAYS rebuild if I'm going to do any surfacing.

[HughesTooling]

There is something wrong with the splines at the ends. I opened your dxf in Rhino and tried to extend those splines and can only extend one end, all other curves in the file work fine. I found if I zoom in a long way it will extend but it goes a bit haywire and doubles back on itself. Found the same in fusion, if you copy one of those end curves away from the rest, draw a circle around it, it will only extend from one end, other splines in the file extend both ends.

Mark

[HughesTooling]

Here's the problem, there are 2 points stacked at one end of the splines at the ends.

Mark