Cubik Studio

Have you changed anything inside the renderer Class?

Edit: The rotation point has to be relative to the cube positions @Sphax

Nothing in the renderer class was changed. Just copy/pasted.

You can fix it by substracting the model position from the rotationPosition for each element. And fix the rotation by adding GL11.glRotatef(1f,0f,0f, 180F); before the render call inside your renderer.