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Using the cell fracture add-on I create shards of different sizes, and I want to use them in a rigid body simulation. I have the option to set the mass of the shards based on their volume:

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The problem is that I don't know how to access these masses. The shards don't have rigid body physics activated, and if I activate rigid body physics on them, then their mass will be the default 1.000, independent on their size.

I saw a tutorial where the guy went into "Blender Game" mode, and indeed if I do it, I see the expected mass values on the shards. But I don't want to use "Blender Game" - I am not interested in game development. I would like to have these masses with Cycles and normal rigid body physics.

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This setting is located in the properties panel>physics>rigid body tab.
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You may also go to the tool panel>physics tab, (while in object mode) press T if it is not open already. Select calculate mass, and Blender will give you a host of preset values such as broken glass, iron, cardboard, etc.

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  • $\begingroup$ As I wrote, my problem is that the shards don't have rigid body physics activated. Of course I can activate it, but then I need to set the values manually. Your second tip is useful, however, so I accept this answer. $\endgroup$
    – WannaKnow
    Feb 27, 2016 at 20:19

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