daiban.3dm (1.3 MB)
I used the Sweep 2 command to do it but the distance between the 2 curves (red and blue) is not fixed. So what should I do? … I want the distance between the 2 curves to be 2 mm. Thank you for reading and replying
Hi,
This assumes your red curve is where you want it. Use Pipe with a radius of 2mm on it, with the No Caps option, to create a tube. Use Intersect on the green surface and the tube to create a new curve. Use this as the second rail in Sweep2 to create a new surface. Delete your original green surface.
NB. I expect you will need to extend your red curve and/or your green surface to get the new line to extend far enough.
HTH
Jeremy
???
I used Offset curve on surface to get 2mm distance in red and blue but no good result
daiban1.3dm (1.3 MB)
I used the average wire on the red and blue wires… then used off set curve on surface with a distance of 1 mm but the result is the curve is broken at the end. I don’t know how to fix it.
As I suggested above, you need to extend the green surface so that there is sufficient material to encompass the offset. Extend the bottom edge and each end, using a factor of 1. Then extend the red curve on the surface.
Next offset the red curve on the surface by 2cm (if you don’t see the direction arrows pointing down the surface, use the flip option).
Then take each of your end curves and extend on surface
And use the end curves and the new curve to trim the surface
However, the resulting surface does not look great. You may want to rework this with a better starting surface. That would allow you to get a cleaner result like this.
To get a new starting surface, I placed a plane through the middle of your green surface, adjusting its position to approximate the mid line.
I took the intersection of the plane with your green surface as a guide
set the cplane to the plane and placed an ellipse on it, which I manipulated to get close to the guide (I could have got it closer but time is valuable).
Then I placed a point above the centre of the ellipse where I judged your green surface converged to and extruded the ellipse to that point. I adjusted the height of the resulting cone to better match the angle of the green surface, then scaled it 3d from the tip so it extended below the plane.
I pulled the red line and the two end lines to the cone.
Then I offset the top line by 2mm and extended the two pulled end lines on the cone’s surface.
And used the four lines to trim the cone, giving the final surface.
daiban1b.3dm (1.3 MB)
HTH
Jeremy