I would like to know how to put shards/rock spikes that face upwards on my character's arms, like the branches of trees face up. (Incomplete character model for reference). Preferably for Unreal Engine friendly. Here's the picture of said spikes want to achieve something like that.

Spike Reference Spike Reference 2

Character Model

  • $\begingroup$ Could you post some reference images of what you want to achieve? $\endgroup$
    – cgslav
    Dec 11, 2017 at 20:55
  • $\begingroup$ @LukeD Added pictures of spikes, i need somewhat like that. $\endgroup$
    – antonisk1
    Dec 12, 2017 at 8:52
  • $\begingroup$ blender.stackexchange.com/questions/56535/… and blender.stackexchange.com/questions/50695/… $\endgroup$
    – user1853
    Dec 12, 2017 at 12:06
  • $\begingroup$ What are you having trouble with that a basic modeling tutorial doesn't cover? Adding forms to forms is mostly what blender is used for... $\endgroup$
    – dval
    Dec 13, 2017 at 17:03

2 Answers 2


Use a Particle system.

Set it to Hair mode and set the Render to Object.

Select the object you want to use as spikes as Dupli Object. (The specified object will be duplicated in place of each particle)

enter image description here

Use Weight Paint to define the areas where you want the particles to appear.

Red where you want the most particles, blue where you want none.

enter image description here

Then set the Vertex Groups to use the vertex group created through the weight paint.

enter image description here

  • $\begingroup$ Seems promising enough. Will try this method and let you know. Also, thank you $\endgroup$
    – antonisk1
    Dec 12, 2017 at 20:40

Make a couple of cone meshes from the create tab on the left, then place them where you want. Then shift-select both of them and press the join button on the tools tab on the left.


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