r/rhino

Why isn't this enough to split?
▲ 15 r/rhino

Why isn't this enough to split?

trying to split the closed polysurface (the ribbon), with the 2 surfaces as shown. The surface was extended as a line on z=0 then extruded upwards to create the two surfaces.

u/a-desperate-username — 9 days ago
▲ 28 r/rhino

Should I learn Rhino in 2026?

So, a friend of mine working in computational design asking me to learn rhino and join him. I am a software engineer myself. I had some basic 3d modeling with blender. I did some search before writing this post and found how rhino's work, ...etc. Now I am stuck does it really matter in 2026?

reddit.com
u/Important_Earth6615 — 10 days ago
▲ 18 r/rhino

How do I “unfold” a coastline to show its true length without losing the detail to show locations

Hi folks,

I’m trying to reproduce something similar to this image in the middle but I’m absolutely struggling to figure out how to do it.

I have a 2D poly line I want to unfold but not loose the identifying details.

Any help is hugely appreciated!

u/graphgear1k — 9 days ago
▲ 1 r/rhino

Buying an older laptop for Rhino8 - Jewelry work

Hello all,

I'm looking at buying a laptop for use in a jewelry design class. They'll be using Rhino (v8 I think), and doubt they will be doing much rendering. I have powerful desktops for that if needed anyway.

Money's a factor and I want something long lasting so I am looking at a refurbished business laptop with an i7-1265u and 32GB DDR4.

I used Rhino donkey's years ago but I have no idea what the real-world performance expectation would be for this today.

Anyone still using gear this old for modeling at this scale/complexity?

Edit/Update: Thanks for the replies. I figured these specs would be ample, but wanted some real-world input before spending the cash. Appreciate the response!

reddit.com
u/uprightanimal — 8 days ago
▲ 2 r/rhino

Alles ist explodiert

Ich versteh es nicht. Meine Mitbewohnerin arbeitet gerade an Ihrer Bachelorarbeit - ein Möbelstück.
Heißt: viele Varianten, Details und Versuche.
Heute überträgt sie Maße vom Prototypen in Rhino und ZACK! Alle Kurven/Linien sind zerlegt. Also ausnahmslos, selbst Text wurde in Linien und Flächen zerlegt.
Selbst in der Historie ist nichts vermerkt, kein Hinweis auf ein ausversehenes “explode_all” oder ähnliches.

Hat das schonmal jemand so erlebt?

Danke für eure Zeit 🫶

reddit.com
u/Relevant-Cap-3744 — 8 days ago
▲ 4 r/rhino

Basic Layer Outliner tool

Used Rhino for years in my spare time, but my day job for 25 years was CATIA. The thing I always missed in Rhino is a tree that shows what is actually on each layer, so today I put one together.

It is a Python script for Rhino 8 (Windows tested). It shows:

  • the layer tree with an object count per layer
  • every object under its layer; click one to select and zoom to it, click a layer to select all of it
  • hide/show and isolate from the list
  • rename objects and layers in place

Add an alias (I use LO) and it is one keystroke away. Built by poking a stick at Ai until I got what I wanted..

https://github.com/Eastyuk/rhino-layer-outliner

Feedback and bug reports welcome. If anyone can test it on Mac, I would like to hear if it works.

u/EastyUK — 7 days ago
▲ 1 r/rhino

Some tips for a newbie please

https://preview.redd.it/dn5srn5br0uh1.png?width=1374&format=png&auto=webp&s=ecb23dc649b2c1251ba0c8e0eaed08b00ec4b403

Hiya! Although not brand new at rhino/grasshopper, I'm definitely still a beginner, and I don't really know how to ask this on YouTube or Google, so I thought I might try here!

As part of a school project, I'm supposed to create a wall/floor mounted artwork, and I thought I'd create a spiderweb. I've created a 'cone'-shaped web, and I used the polyline tool to create a spiralling line climbing up the web.

Now, the problem I'm having is that I want to use the Boolean Difference tool to create the cut-out from the orange box. I can create a planar surface with the inner 'triangles' of the web, but I'm unsure how I can create the individual polygon shapes made by the polyline.

It is important to me to have these individual shapes because I want to extrude them to differing heights to create some further visual interest. Do any of you have some tips for how I can achieve this?

reddit.com
u/No-Rock-20 — 8 days ago
▲ 5 r/rhino

How to select edges consistently on Voronoi cells over an irregular 3D surface (to loft tabs toward centroids)? .-.

Hi everyone! I'm following a Grasshopper tutorial that creates tabs/folds on a flat surface, very useful...

BUT I'm adapting it to my own design: an irregular, organic surface floating in 3D space (not on the XY plane), subdivided with Voronoi cells. Screenshots attached: the first is my model, the second is the tutorial's result.

Problem 1: inconsistent vector direction
The direction vectors that generate the tabs don't point the same way. In some cells they point toward the outer edges and in others toward the inner ones. I want all of them perpendicular to the outer edge of each cell and pointing outward.

Problem 2: selecting edges by index doesn't work
I tried sorting the list of points and picking items with an index (List Item), but since every Voronoi cell has a different number of edges and a different order, the same index points to a different edge in each cell.

What I'm trying to do

  1. Select specific edges of each cell (or the whole outline) without relying on indices.
  2. Scale those edges toward the cell centroid.
  3. Loft between the original edge and the scaled one to get the tabs.

What I've considered

  • Brep Edges (Naked) + Scale toward the centroid + Loft.
  • Doing the offsets manually in Rhino, but I have hundreds of cells and want it to update if I change the Voronoi.

Is there a reliable way to select edges by criteria instead of by index?
Any workflow suggestions would be appreciated! Thanks in advance!

u/simismx913 — 8 days ago