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28 votes

Placing 4 Circles on a sphere

Facected regular solid & boolean op. Fastest way to find out how to sudbidive the 3D space of the sphere in n parts without relying on complicated solid-angle formulas is to use regular solids. ...
Carlo's user avatar
  • 24.9k
23 votes
Accepted

Is there a "Volume Select" equivalent in Blender?

Animation Nodes can be used here. The Find Nearest Surface Point node is used to compute the distance between every element and its closest surface point, the distance is then used as the scale of the ...
Omar Emara's user avatar
  • 22.6k
19 votes
Accepted

How to wrap paper around an object?

Cloth Sim Add Circle 16 sides, Extrude, Scale, Grid Fill Extrude, Scale outer loop, select vertices for each side and Scale on (X/Y) to zero to get square shape, add extra loops Ctrl+R+3 Add cloth ...
vklidu's user avatar
  • 36.8k
18 votes
Accepted

Placing 4 Circles on a sphere

Another approach also based on the tetrahedron but which does not use the boolean modifier in order to obtain a regular mesh at the end. Add a tetrahedron Add a circle : the circle needs to have a ...
lemon's user avatar
  • 60.5k
18 votes
Accepted

How to connect a circle to a grid with even topology?

You are merging 2 meshes with very different densities. The circle is about double the subdivision compared to the rest. Your topology should look similar to this: the 5 green polys (the E pole ...
Jaroslav Jerryno Novotny's user avatar
17 votes
Accepted

How can I create a mathematically correct arc/circular segment?

Add Primitive Arc Operator The theory is well covered here Calculate the radius of a circle given the chord length and height of a segment The ...
batFINGER's user avatar
  • 84.5k
17 votes

Blender 3.0.0 - How to use a vertex group in geometry nodes?

In Blender 3.0, attributes can no longer be accessed directly using the name of the attribute. Instead, attributes are stored in 'fields', which use diamond-shaped node sockets. You can connect a ...
BlenderUser123's user avatar
17 votes

What's the fastest/most fun/craziest way to make a flowerpot in Blender?

I think a pot shape is intricate enough to take your time and generate it with a Geometry Nodes setup: Now if you connect this pot as an instance to be spawned... On some hard to obtain versions of ...
Markus von Broady's user avatar
16 votes
Accepted

Twisted Cylinder (Hyperboloid of one sheet)

I think this solves the issue with moonbots answer. Use the TinyCAD addon to create vertices at the edge itersections EDIT steps: rotate top face 90 degrees (R, Z, ...
Johan Apes's user avatar
15 votes

What is the simplest way to generate a dodecahedron?

As @Carlo said it's available via Extra Object add on. If you want to make it from scratch though, here's how to do it. Add an Ico Sphere and set its subdivisions to 1 in a Tool Shelf (T). Give the ...
Paul Gonet's user avatar
  • 33.4k
15 votes
Accepted

How do I model the express key of a wacom tablet?

Add a Circle mesh and select half of the vertices. Press Y to separate the selection, and move it away along whichever axis it faces. Select all (A) and press F to fill the shape with an n-gon. In ...
HISEROD's user avatar
  • 4,013
15 votes
Accepted

How can I cut a UV sphere in half?

One way.. (I'm always using this for mirroring) Alt-LMB select edge loop V rip, with your cursor on the waste side of the loop. Hover, and L select connected under cursor X delete faces. .. which ...
Robin Betts's user avatar
  • 78k
15 votes
Accepted

How to make flat surfaces look flat with smooth shading?

Blender is smoothing between your larger face and the next ones, because they are not co-planar. To add to TheLabCat's answer (who proposes to inset your large face so that the next ones are now co-...
moonboots's user avatar
  • 162k
14 votes

How to find the number of loose parts with Blender's Python API?

Recursive Bmesh version Similarly to the way other bmesh operators, BMesh.Ops are used, get_islands(bm, verts=[]) ...
batFINGER's user avatar
  • 84.5k
14 votes
Accepted

Setting the origin for each object to geometry

Low level Origin to geometry Will have to investigate the difference between calling the set origin operator via code and via the UI Instead can sum the vert coordinates make that the origin, and ...
batFINGER's user avatar
  • 84.5k
14 votes

Strombic Hexecontahedron from a dodecahedron

Face instances. TBH not totally sure I'm on track here, re symmetry of desired result, will go thru the process of adding as dupliface objects, aligned to the face normals Enable Add Mesh Extras Addon ...
batFINGER's user avatar
  • 84.5k
13 votes
Accepted

How can I model Gothic style windows?

Expanding my comment above: The "tracing" method is something like this: 1) Find an image at quite high resolution, like this: I got this stock image from here. 2) If your image has noise or other ...
m.ardito's user avatar
  • 12k
13 votes

How to create a circular shaped grid, similar to a manhole cover

A duplivert approach. The aim here is to have a regular quad only geometry. Here is the result with a bevel and a subsurface modifiers : To begin : Make a sixth of hexagon Make a segment of length ...
lemon's user avatar
  • 60.5k
13 votes

Closing "Fibonacci's Hole"

Oh gosh, I spent ages with it. On the pictures you posted it looks particularly nice because of lines are actually spirals. If they were straight it won't look nice. On your picture pole doesn't have ...
Noidea's user avatar
  • 1,256
13 votes
Accepted

How to find the number of loose parts with Blender's Python API?

I propose another approach based on dictionaries and sets, for performance purpose. It allows here to calculate a 1080 times arrayed sphere with about 500k vertices in 3 seconds. The principle is to: ...
lemon's user avatar
  • 60.5k
13 votes

How can I view the perspective projection of an arbitraryy shape onto the plane below?

Not sure exactly what you want to do, or how you plan to use this information, but depending on you purpose Knife Project tool may do what you want. If you need to generate actual geometry from this, ...
Duarte Farrajota Ramos's user avatar
13 votes

is it possible to unwrap an Icosphere in blender?

You will need to mark some seams. Ctrl + E, Mark Seam (and inversely Clear Seam) An easy ...
wyskoj's user avatar
  • 403
13 votes
Accepted

Billions of loop cuts

You don't have to make several objects, you can keep all of your geometry in a single mesh, but if the pieces are separate in the real world referece, then separate them in modeling. You must have ...
Leander's user avatar
  • 27.2k
13 votes
Accepted

Strombic Hexecontahedron from a dodecahedron

This can be done via the UI.. it's relatively destructive, but here goes.. Enable the shipped add-ons Add Mesh : Extra Objects, and Bool Tool Set your Pivot to 'Individual Origins', and your ...
Robin Betts's user avatar
  • 78k
13 votes
Accepted

How to generate "stellated" shapes?

Add Icosphere > Subdivision 1 Bevel Vertices cmd+B type 0.304, Merge by distanc M Search Poke Faces Scale S
vklidu's user avatar
  • 36.8k
13 votes

Obtain position of point in geometry node

As of 3.0 you can use Transfer Attribute + Set Position to remap a mesh or curve line to any series of points as long you place them in the correct index order. How good are you at connect the dots ...
Rhaenys's user avatar
  • 1,374
12 votes
Accepted

How can I make holes on a wrist strap?

Using booleans for holes is an easy temptation, but often brings horrible results, due to horrible topology. I would try something simpler like this: and then let subsurf make the rounding:
m.ardito's user avatar
  • 12k
12 votes

How can I cut a UV sphere in half?

Bisect. Will throw the bisect operator into the ring. For the top or bottom halve of the default cylinder could bisect using local origin (or any point with z = 0) and normal aligned with z axis. The ...
batFINGER's user avatar
  • 84.5k
12 votes
Accepted

Python Geometry Node Trees

You need to access the node tree through the geometry nodes modifier. Here's the start of a script that would allow you to do that: ...
Marty Fouts's user avatar
  • 33.3k

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