im new to rhino. how do i kind of extrude a surface so it turns out to have like edged curve ? idk the term but its like inverted curve. instead of looking curvy when we pull it, i want it to be sharp
Like this?
Curved Ridge DC01.3dm (179.6 KB)
Two surfaces, trimmed to each other.
Start with one rectangular surface.
Rebuild with desired number of control points in each direction.
Deform surface by manipulating control points as desired. I used twist and rotate.
Rotate with Copy=Yes the surface 180 degrees about a vertical axis.
Trim the surfaces.
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this is helpful ! its almost there but how do i make the curve not flat ? it is kinda inwards if u look closely on the pic i sent
If you don’t mind, I think we should change the topic title. A line is never curved.
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oh im so sorry cus idk what to put exactly for the title just now
I’d just delete the word ‘line’, the rest is ok
Curved ridge also sounds good…
Perhaps consider a Sweep2 solution. You can create your curve, then offset both sides, and adjust the resulting curves to your needs. Trim the underlying planar surface using your new curves. Then it’s time for Sweep2.
You can use Sweep2 with match quality to meet your surface continuity. This is properly rough with no particular care to use MatchSrf afterward, and we are already below 1 degree of G1 in important loctions. For a wooden surface, it wouldn’t matter, it can be hand worked away if you were really bothered about polishing.
SurfInv.3dm (597.9 KB)
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Have you downloaded and opened the file? The shape can be controlled by moving control points. Add control points if needed.
How much experience do you have with Rhino?
im almost there !! but how do i move to next step which is the Sweep2 ? what should i do ?
tv cabinet.3dm (64.0 KB)
interesting challenge, i ended up lofting two surfaces to have more control and because the edge goes from corner to corner i made the loft slightly bigger and trimming it off after that.
to have more control over an even curve you can create your front curve first and flow it over your curvature for instance
here from the side the lower one is the front curve i flowed it over the curved curve
the straight curves are at the same height that will give you a bit control over the tightness
after that loft each side separately, join and trim. you might have to flatten it a bit with flow along surface once more, or you experiment with introducing a few more curves to keep it leveled.
use Contour to break it up for your slabs then extrude etc. i had a bit fun rendering it out quickly.
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im still dont get on how to achieve the crease line on the curve. bcs after i loft the surfaces, it turned out to be a normal curve without the crease. could you explain a bit more ?
