Questions tagged [mesh]

A mesh is a collection of vertices, edges, (composed of a connection between two vertices), and faces (composed of 3 or more connected edges). Meshes are the most commonly used object type in Blender.

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152 votes
4 answers
268k views

Add different materials to different parts of a mesh?

How do you add more than one material to a mesh? I have tried adding two materials to the object, and then assigning one of the materials to a vertex-group, but I could not find a place to assign it....
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51 votes
2 answers
88k views

Why are some faces in my mesh darker?

While rendering a mesh with smooth shading on, I get a dark region/shadow on certain faces. The effect is more evident when smooth shading is applied to a mesh containing ngons, with the ngons turning ...
34 votes
5 answers
198k views

Heat Weighting: Failed to find solution for one or more bones

I cant figure out why I get problems rigging this mesh. I get an error stating Bone Heat Weighting: Failed to find solution for one or more bones Blend file
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18 votes
6 answers
117k views

The Boolean modifier is not working

I'm trying to model an M16, but it's not going so well when it comes to the magazine of the weapon. Next to the magazine is a mesh. I want to cut holes in the mag with that mesh. But the magazine ...
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161 votes
1 answer
479k views

Splitting pieces of a mesh into a new object

I've just made a set of armor by using a male body mesh model I downloaded and selecting certain faces from the model and duplicating them to create viable armor pieces. Since the pieces are just ...
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91 votes
7 answers
181k views

How to smooth shade an object while retaining hard edges?

I frequently come to the problem of having a mesh with parts I would like to render smooth and "hard" edges connecting them. How can I set the mesh to show the sharp edges but render everything else ...
25 votes
3 answers
7k views

Shadows along edges of mesh in 3D View

I have recently started using blender and one of the models I'm working on has dark shadows along edges. I started this model from scratch. I can't remember them being there when I first started the ...
  • 353
24 votes
1 answer
12k views

Why do the measurements of this object seem erroneous?

I just found out about the Mesh Display : Length feature in the "N" panel (thanks to this seemingly-migratable question) that allows one to measure the length of a face or vertice. But my first ...
  • 4,511
16 votes
1 answer
12k views

Why can't I transform faces, edges, or vertices without transforming the whole object? [duplicate]

My problem is that I sometimes lose the ability to independently translate or otherwise transform any parts of a single mesh. If I try, for example, to just translate several faces, edges, or vertices,...
5 votes
1 answer
1k views

Eliminating edges connecting islands

I'm working on a control station that has buttons. It is a continuous single mesh model. That means, I don't want to create buttons and other details separated from the main mesh, but as you can see I ...
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69 votes
4 answers
43k views

When should N-Gons be used, and when shouldn't they?

Support for N-Gons (polygons consisting of more than 4 vertices) has been in Blender for a while now, but many of us still may not know when to use them, and how to do so effectively. In what ...
34 votes
1 answer
20k views

Why are the longer edges being beveled more?

I'll preface this by saying I'm very new to Blender - I'm trying to put a bevel on an edge, looks something like this: As you can see, the vertical side is much longer than the horizontal side. When ...
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19 votes
3 answers
24k views

How to cut an object along a curve?

I want to divide this model into separate pieces to prepare it for the next stage of a project. The divide needs to be made down a curved line (which I hope is visible in picture). , I figured out ...
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32 votes
1 answer
42k views

How can I duplicate a mesh along a curve?

I want to outline a curve in the form of text with a mesh (UV-sphere, cube etc.). How can I do that while saving mesh geometry without using the Curve modifier?
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18 votes
2 answers
7k views

How to approach the modeling of duct work, piping, wiring?

I'm wondering how to approach duct work, piping, and wiring? In the past, I have used the spin tool to make corners, but I find it very cumbersome. How do you do duct work and piping? I have seen ...
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68 votes
9 answers
116k views

How can I add vertices to intersection of two edges?

I need to put a point at the intersection of two edges. Below is a picture with red circles around where I need points to be placed.
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7 votes
2 answers
3k views

How can I recreate geometry using a photograph?

I am trying to change the floor covering using a picture. How can I define the floor?
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15 votes
2 answers
13k views

Is there a way to fill the area between two circles?

There's a way to fill with faces only the area between the larger circle and the the smaller one? I mean.. It's a wheel and I'm trying to fill the rubber part of it. Using the fill function F it ...
12 votes
3 answers
2k views

Why does subsurf modifier cause weird deformation at the end of a cylinder?

My problem is simple. I think that the strange deformations on the top are there because there are so many vertices in one face. How do I fix this while maintaining nice topology? Although I ...
user avatar
11 votes
4 answers
20k views

Cutting a circular hole in a hollow cylinder without distorting the cylinder

Whenever I try to cut out a circular hole in either a cylinder or sphere the polygons around the circular hole always have distorted normals after smoothing. Is there anyway to fix this. I've tried ...
11 votes
4 answers
5k views

Can't find the palette to alter new objects

When you add a new object into the blender scene, normally on the tool shelf a window will become available where you can put in the objects size or number of vertices etc. These options: For what-...
  • 123
9 votes
3 answers
20k views

Wrap curve around sphere

I couldn't find this anywhere, which is really strange, but I'm trying to wrap a curve, imported from a .svg made with a vector image program around a sphere to create the Earth. Basically, this is ...
  • 4,511
27 votes
6 answers
43k views

How can I make a hexagonal grill?

How would I be able to create a grill of sorts found on the front of some computer cases such as this one
  • 381
90 votes
3 answers
147k views

Add the Same Modifier to Multiple Objects at Once?

Is it possible to add a modifier to more than one mesh at once? I have a lot of unique objects, and I want to set a subdivide modifier to them, would I have to do each one individually? I have ...
  • 5,569
9 votes
1 answer
5k views

How to make a bevel on text

How can I make a bevel, like in the "Gibson," for my personal inscription? Is there an automatic method to do so?
35 votes
4 answers
76k views

Model a simple 3D spiral shape?

I need to model a simple spiral shape. I imagine the best way to do this is with curves, but I am unsure how to create a perfect spiral shape with curves. What's the best/easiest way to make a spiral ...
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29 votes
4 answers
62k views

Is there an unsubdivide function in Blender?

I am wondering if there is a modifier or tool that will essentially undo a subsurf or subdivide command.
26 votes
4 answers
23k views

How are vertex indices determined?

How does the program decide what indices to assign to vertices? If you create a primitive, are the indices generated randomly, or by some base primitive setting? If you extrude new vertices, will they ...
  • 6,323
13 votes
2 answers
21k views

Edit Mode Transparent Objects

I changed my Blender Units to Metric System, but when I'm building things, my meshes are transparent, i.e. I can see through faces like in wireframe even though my wireframe is turned off. All faces ...
  • 307
7 votes
1 answer
1k views

How can I animate a mesh moving in a spiral fashion?

I want to animate a paper as it's being tightly rolled. I've done some research and seen that using the spiral add on might be advantageous, but I haven't found anything relating specifically to my ...
  • 117
20 votes
6 answers
11k views

How can I morph a flat plane to be a flat cirlce?

So I'm making a 2d animation in blender, using the z space as layers, and the camera is in orthographic view. I'm trying to morph a square plane to be a flat circle, but I have no idea how to even ...
  • 1,504
13 votes
1 answer
18k views

Getting "experimental" true displacement to work

I have been trying to achieve a true mesh displacement on meshes for quite some time, without ever getting it to work. If I understand it correctly, this experimental feature would allow me to easily ...
  • 4,511
30 votes
2 answers
10k views

Is there a way to unfold a mesh?

Is there a way to take a mesh, cut it with seams or sharp edges and flatten it, so that the faces stay the same shape and size? Making paper models is one aspect, where you could use that technique. ...
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7 votes
3 answers
22k views

Can't get my model out of wireframe mode

I'm new to Blender and this site, so I apologize in advance if I'm not following any of the proper etiquette. I'm no artist, but I'm trying to learn Blender so that I have some programmer art for me ...
  • 117
19 votes
1 answer
8k views

Finding vertices in a Vertex Group using Blender's Python API

Is there an easy way to get the vertices in a vertex group? The only way I've found is pretty brute-force - e.g., to find the vertices of object obs[i] in group "e"...
9 votes
1 answer
26k views

How can I select part of a mesh and make it seperate?

I want to make the teeth a separate child object from the mouth. I want to know the best way to do this. I have tried going into edit mode with Tab and trying to select all the vertices but that ...
8 votes
2 answers
2k views

Text on a balloon

I want to create an image like below, so a balloon with text on it. I have been googling for ideas (text, sphere, ....) and came on this earlier question. So I tried Shrinkwrap and Cast modifier. ...
user avatar
18 votes
4 answers
29k views

How to flatten a non-planar face to a targeted plane?

Let's take a non-planar quad here for a simple example, how to only move one vertex on it, to finally make it planar while keeping the other three vertices still?
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14 votes
2 answers
34k views

display face normal direction in blender 2.8

How can I know if the normals of an object are flipped or not? Because in version 2.8 both normals have the same color and I can't identify if it's a flipped normal, unlike the previous versions where ...
  • 141
4 votes
1 answer
2k views

How do I fix a boolean/bisected surface edge?

I am trying to slice up my models using the Boolean modifier. After applying the modifier on my smooth mesh, I get the expected result, a flat dissection to separate my mesh into two. The problem ...
  • 143
29 votes
5 answers
134k views

Straighten Vertices Along a Line

On a line, I need to line up the bottom vertex points in relation to a top reference vertex point. How could I reset the X Y and Z coordinates of these vertex points to essentially line them up all ...
user avatar
29 votes
2 answers
74k views

How to make all polygons into triangles

I need to create test file for my program. But it only accepts polygons with 3 vertices - triangles as input. How can I convert all polygons of some object into triangles? I know how to select all ...
  • 393
23 votes
4 answers
30k views

Fill cylinder cap with quads

Is there any way of converting the triangle fan found on a cylinder cap into quads.
  • 1,340
18 votes
8 answers
3k views

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

I want to find out how many loose parts a mesh has using Python, i.e. write a function that takes a mesh object as an argument and returns an int. So far I haven't found a way to access this ...
  • 283
17 votes
1 answer
35k views

What are the colored/highlighted edges in edit mode?

There are red and pink edges on my mesh. What do these colored edges mean? How can I use them?
  • 377
16 votes
6 answers
14k views

How to find if a point is inside a mesh?

I need a python script that would help me determine if a point is inside a cylindrical mesh. I tried the .pointInside(point, selected_all=False) but it is deprecated in the newer versions of blender ...
12 votes
4 answers
14k views

How to make all quads or ngons on your mesh planar (2d)?

I want the quads in my mesh to be planar, or flat, that is, the 4 points of the quad could all be on the same plane. Or in other words, they need only x and y values to describe their "local" position....
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8 votes
3 answers
4k views

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

I’m trying to create a circular shaped grid, similar to the one in the pic. That’s my first attempt, created by arranging several cylinders with an Array modifier and then cutting the holes via the ...
  • 815
2 votes
2 answers
7k views

Missing objects when opening old file in blender 2.8

I just got a updated to blender 2.8 and my objects that were in hidden layers are gone now, the collection layer tells me that they are in the scene but I cant unhide them also the collection is ...
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23 votes
2 answers
54k views

How to intersect objects and delete leftover internal planes?

I'm trying to find a simple way to create vertices where two objects intersect and delete the leftover internal planes + then join the meshes so that I have one hollow mesh to sculpt. The reason I ...
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