Need help with 3D sobel filter

Hi there :smiley:

I am currently trying to do a 3D sobel filter in the shader graphs tab of unity. I got it to do SOME outlines, but never to the extend that i want to
How can i make the outlines bigger?
Am i doing this right? I really dont know
This is my Shadergraph:
I first multiply the camera position with the normals,
After that i multiply the result with each of the 3 kernels,
Afterwards i multiply the 3 results
This is the entire graph:


Please tell me what im doing wrong D:

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