> Well, I can't delete it, because that causes a crash, and I can't
> seperate because that crashses as well.

After you open it, immediately save it out again as a new file, like starship2.3dm. Now open starship2.3dm and you should be in better shape at that point. But there will be some duplicated surfaces that you will want to remove.

I think that trying to join 2 pieces that have coplanar faces may be the cause of this.

- Michael

Another weird thing. I have a curve, it's complete and joined. Yet when I extrude a circle over it, it looks like one solid piece, but 3 of the pieces aren't joined. I try joining and union, and it doesn't work. I can drag the seperate pieces around.

I'm attaching this version as well. file as well. There is a small circle floating near the curve I am using.

Here is a image.

The yellow bits are 2 seperate piece, even though the curve that created them is continuous. I looked for overlapping points, or other probs, and couldn't find any.

It doesn't pierce the command bridge, it just looks that way. I moved it out to make it easier to see. I'm using these sweeps to cut paneling into the spaceship

Hi Crusoe, I'm not following this last bit - I see the circle and I extruded it, but I'm not seeing what is messed up.

- Michael

Ok, I see - this is with a sweep, right?

Found the problem. Where the loopy bit breaks into a seperate segment, there was a 'corner' point from when the segments were welded together. Deleting that corner point allowed the extrusion to succede over the whole curve


Are there any plans to allow users to change "corner points" into regular points and vice-versa?

Yeah, it's a sweep.

Yeah, that spot had a tangent difference of 0.68 degrees between the different pieces.

Not much, but enough so that the edges had enough of a gap to not join.

> Are there any plans to allow users to change "corner points" into regular points and vice-versa?

Yes, I think eventually I'll try to package this up, probably when there are object properties for the selected object, possibly this will be a changable property on selected points in the same properties UI. It will be a while for that though.

In the meantime you can do the equivalent of a change by inserting a new point and deleting the old one.

- Michael

What is weird, is corner #1 causes the sweep to break into a seperate point at that place.

But corner point #2 doesn't.

I moved the points to show them better. if I delete #1, the sweep forms one continuous piece.

> But corner point #2 doesn't.

That's because the 2 segments that are touching at that point have matching tangents. So even though it's a "corner" point which will make a kink if you move it around, it is completely smooth at that spot in its current point arrangement.

Since each segment has the same tangent direction at that spot, the edges of the resulting surface match up there as well.

The other one that was a problem seemed to look smooth to the eye, but it was off by just enough (0.68 degrees) to make a non-tangent area in the curve right there.

- Michael