How do I cut up a 3D object into separate pieces

Question

I have here a 3D piece of glass which I need to smash in Unity. Is there an easy way of cutting it in Blender into separate pieces? As you can see I have started cutting on one side but can't separate with both sides of the cut having faces and when Unity doesn't see a face it leaves a blank space.

The recent answer about Cell Fracture - http://blender.stackexchange.com/questions/45937/exploding-a-solid-object — Mr Zak, Jan 30 '16 at 17:32
cell fracture builds around the glass but it doesn't let you export it as separate pieces so it doesn't work in Unity — Dave Goateze, Jan 31 '16 at 01:45
it makes a block around the glass but doesn't actually break it as an object at all — Dave Goateze, Jan 31 '16 at 02:25

score 2 · Answer 1 · answered Jan 30 '16 at 18:45

Cell Fracture AddOn: Cell Fracture AddOn. I'm pretty sure this is in Blender by default, but you may need to enable it in the User Preferences, then select the object, then bring up the Toolbar on the left of the 3D Window that you have the object selected in by pressing T, select Tools/Edit pane, then select Cell Fracture.

Or Fracture Modifier build (not an AddOn or plug-in) from Dennis Fassbaenders web site: Fracture Modifier Blender Build. Explore that site too see if it's what you need.

Or do it all manually for complete control.

this doesn't break it as an object either – Dave Goateze Feb 05 '16 at 01:40 — Dave Goateze, Feb 05 '16 at 01:40

score 1 · Answer 2 · edited Jan 30 '16 at 17:34

1

You could use the loop cut tool (CtrlR) to cut the mesh. Then you can just select the diffrent parts (works best in face-select mode) and seperate them with P.

edited Jan 30 '16 at 17:34

p2or

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answered Jan 30 '16 at 17:33

schustudrai

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I need it to break into non uniform pieces like broken glass – Dave Goateze Jan 30 '16 at 17:47
try the fracture addon: http://df-vfx.de/fracturemodifier/ – schustudrai Jan 30 '16 at 18:16
any more ideas? I am splitting it into a hundred or more pieces manually at the mo there has to be a simpler way no?? HELP!!! – Dave Goateze Jan 31 '16 at 20:35

How do I cut up a 3D object into separate pieces

2 Answers2