Modeling strategy

Rhino
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1

Hi friends,

I have problems figuring out the best strategy for these surfaces. The design intention is shown in this SubD-model:

SubD
SubD1558×1471 35.8 KB

I have these sharp edges coming on both sides that fades out as the illustration above. I’m now remodeling this and can’t figure out the best way forward as I always end up with too complex surfaces and brutal tangent brakes.

Nurbs
Nurbs1920×1383 110 KB

What I try to do is to create a blend surface (green) and then sweep (with chained edges) along the sides. But always end up with bad surfaces/brakes where the red circle is. Should I think totally different? Any ideas? It looks so easy in SubD… :slight_smile:

240522_Hoffster.3dm (302.0 KB)

2

Anyone having any brilliant ideas? My best attempt so far, with sweeped sides and the centre blend ends up like this:

Screen surface
Screen surface1920×1219 79.4 KB

3

How about using Sweep2?

image
image2083×1439 260 KB

240522_Hoffster_sweep2.3dm (258.7 KB)

4

Thanks for input!

I guess the main issues here are that I want these to be curvature (compare with the SubD screensot above)

Screen surface 2
Screen surface 21920×1425 88.1 KB

5

image
image3093×1427 405 KB

240522_Hoffster_sweep2_curved.3dm (336.0 KB)

It’s a matter of creating the sections…

6

Hi @anton.hoffman
I would eliminate this kink in your curve here (red circle) in order to make a better blend between the Sweep2 and the BlendSrf.

image
image1920×1052 93.8 KB

240522_Hoffster_JN.3dm (367.2 KB)

HTH, Jakob

1 Like
7

Thanks Jakob! I was thinking in that direction first, but thought I might had a hard time nailing the design intention with the faded lines being more straight in the end. But based on you image here it looks like you’re not far off anyways. Would it be possible for you to save your file as a Rhino 7 for me to look closer? I haven’t updated to 8 yet!

8

No problem:
240522_Hoffster_JN_V7.3dm (368.0 KB)

9

Thanks Jakob!

10

(BTW, if you ever need it, there’s a small command line utility for converting Rhino files available at Convert3dm | Food4Rhino :slight_smile: )

1 Like
11

And, for those not comfortable with external command line utilities, there’s a stand-along file version converter with a UI.

-w

2 Likes