JakeD
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Why does my object not show up?
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37 votes

This is the overview. I am breaking up the parts into individual answers that we can link to from other questions. This is a community wiki, so feel free to add ones that need to be addressed ...

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create mesh then add vertices to it in python
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24 votes

This is how to create a new object and add the vertices in the verts list: import bpy import bmesh verts = [(1, 1, 1), (0, 0, 0)] # 2 verts made with XYZ coords mesh = bpy.data.meshes.new("mesh") #...

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How do I create a reflective white material?
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21 votes

The key is to mix a glossy shader with a diffuse. The lower the fac on the mix shader the more of the first input (in this case more glossiness). For more realism, you can feed fresnel values to the ...

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Set active object with python
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20 votes

Answer to your question With python, it is better to not use bpy.ops at all, but to just manipulate it's rotation directly. To answer your question of how to make an object active in python: bpy....

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What amount of samples to use?
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19 votes

That's about right for something with that many samples =) You have square samples enabled so it isn't 100, but 9,216 (96 x 96) samples. You should be playing with other things to get the render ...

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How can I batch render multiple blendfiles consecutively?
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15 votes

Basics of Blender's CLI (Command line interface) The command line is definitely the way to go. Here is a little training that should be enough to get anyone up and running: blender Is the command to ...

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Modeling with metric units (cm)
15 votes

Just switch to metric units in Properties Window > Scene > Units > Length:

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Batch rename objects with number sequence?
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14 votes

Blender 2.79 import bpy for i, obj in enumerate(bpy.context.selected_objects, 1): bpy.context.scene.objects.active = obj obj.name = "object" + str(i) Blender 2.8+ import bpy for i,...

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How to map the displacement texture?
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11 votes

The easiest way to do this is with an empty (empties can be thought of as an object that only stores loc, rot, and scale). In the modifier, just switch the type to object, and then specify an empty ...

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Do you have to download a special version of Blender to use experimental features?
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9 votes

No, you don't need a special version of Blender. They come with Blender. You can enable them in various places in Blender. For example, the experimental rendering features: Another example - add-...

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Is it possible to not create keyframes automatically when drawing with Grease Pencil?
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9 votes

Yes it is possible. Just hit the button to lock the frame in the grease pencil layers panel.

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Are there any ways to speed up blender compositor?
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9 votes

You can change the lines to be straight by going to "File > User Preferences > Themes > Node Editor > Noodle Curving". You can disable "Use Nodes" to keep it from updating until you are done moving.

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Scaling A Newly Made Cube
8 votes

What to do You need to play around with the python console for this stuff. Here is probably what you want (sets the value directly in the properties panel, absolute method): bpy.ops.mesh....

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Should I just quit Blender when after two weeks of learning and watching tutorials I cannot model anything?
7 votes

What are you trying to model? Perhaps you are trying to jump to something too hard such as a creature or a tree. Could you model a simple crate? Barrel? Wooden chair? A barrel, e.g., could be as ...

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Where is the Volume "step size" in Blender 2.78?
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7 votes

It is now moved to the geometry panel: Properties Window > Render Context > Geometry Panel > Step Size

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How to make a somewhat stiff pneumatic tube?
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7 votes

You can use a cloth simulation for this. Scene Setup To begin with, I added a simple bezier curve, then edited and beveled it. I then converted it to a mesh object, and built the other simple cuboid ...

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Quickly Copy UV's from one face to another
7 votes

Use this add-on: https://wiki.blender.org/index.php/Extensions:2.6/Py/Scripts/UV/Copy_Paste_UVs You could also just unwrap one, then use an array modifier to duplicate it down the row, then remove ...

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How to find lost image in uv/image editor?
7 votes

Use: View > View Fit Or View All Or use a hotkey like lemon mentioned (provided you are using blender's default hotkeys): Home or Shift + Home

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Can nodes use an objects x/y position?
7 votes

Use the object info node connected to a separate xyz node:

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Translate object using lowest Z value python
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6 votes

Here is a simple script that accomplishes this...let me know if you have any questions. import bpy # get a reference to the active object obj = bpy.context.object # get the minimum z-value of all ...

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Cycles: Shadeless "Shadow-catcher" Material for Rendering onto Footage
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6 votes

Note: this solution may not work for everyone...you give up some control because changing the appearance of the shadow can only be done in the compositor AFAIK. See the end of my answer for more ...

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Need help setting up lighting for a render like this.
6 votes

Basic setup First, make the world background black, then add a single light because in your image there is no light whatsoever in the shadows. Position/Orientation The position of the light will ...

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What do the modal operators do?
6 votes

A modal operator is just an operator that does things a little differently. While there are tons of ways to setup a modal operator, it doesn't have quite the same clearly defined lifetime like regular ...

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How to set absolute bounding box dimensions of a group of selected elements (vertices, edges or faces)
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6 votes

Here is a script that I wrote to accomplish this. It simply calculates the bounding box of the selected vertices, then scales in such a way that the new dimensions become what you set the values to be....

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Non-destructive modeling approach to cropping images
6 votes

The edge slide tool can do this very easily without the limitation of the vertex slide tool. Just disable "clamp" and enable "correct uvs" to use it. Beware, of extending past image bounds, however, ...

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How to change background color in Blender Internal?
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6 votes

Switch the background alpha from transparent to sky:

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Why does my object not show up?
6 votes

2. Render layer not showing in the compositor Documentation: https://www.blender.org/manual/render/post_process/layers.html#render-layers There are actually a few different ways to run into this kind ...

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Creating a shortcut for changing the solidify thickness
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6 votes

This can be easily done with python. 1. Get the script Copy the script into blender's text editor and save it as "solidify_set.py" (NOT "solidify_set.py.txt"). OR Download from github (see the ...

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Applying textures to a maze
5 votes

To select each component: Floor - select a face on the floor and hit Shift+G --> coplanar Top - same as floor (just select a top face) Walls - select any face from the top and any from the floor, ...

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Animating a fluid water fountain
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5 votes

You need to set the inflow's velocity to be positive in the Z direction. This will force the inflow's fluid up, giving you the fountain effect. Here is a bit about an example I quickly put together. (...

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