Adjust physical bounce of the emitter particles I have set collisions for the object, but when the particles collide and bounce back, they look very rigid: how can I make it look more natural (like sparks)?










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With Rotation checked, set Randomize to 0, and turn off all velocity in the Velocity segment, like this:

Now your particles should spawn based on the initial rotation of your blueprint object, and only rotate once they bounce off of something.