Hi, you have to break the rail curve and erase the curve between th lines, then move the lines to the new position and blend them like I show you in the image, finally join the lines with the curve and make the sweep.

Hi all, this is my attempt for what it's worth.

Hi Wagurto,

what about this, borrowed Dan's 3dm-file and rotaded/copy/pasted the parts




ooops, I meant to say: "This is from right to left"...

/Lars

Hi, Dan I saw the file you sent and that's exactly what I was lookink for. I try to replicate what you did but I am stuck at the lost+sweep step. Could you be so king to eleborate a little more? I am really new to MOI and step by step command will help me a lot.
thanks
Wil

Hi Wil,
here you are. Sorry for the bad quality, but I had to keep it light!
Hope it helps
Cheers
Dan

Hello:

I´m too late, but.... :-)

1.- Draw a polyline and fillet it.





2.- Extrude the polyline setting the direction of extrusion










3.- And...nothing else. You can mirror the result and copy to get the final result. (and shell it, of course)







Bye

David

Hi Dan thanks for your answer and quick tutorial. But I was takinh to your other solution. See de attached picture please.
thanks

That's exactly the step I've tried to explain in the video. First you loft the two pairs of parallel lines, then you sweep the two curved blends.

Hi wagurto,

I took the example from Daniele(compliments) and joined the curves
in two single curves

Then snapped a horizontal Line between them,and
Sweep two rails to create a single surface

Finally Shell(Flip direction option)