Hello, I have this anti-static mat that has a clip to attach onto some metal piece. Before you say to attach it to my case, my case is fully painted metal. So where do I attach it? I read online to attach it to a screw that is in the case. Will that provide enough safety? Also, do you think I would need an anti-static wrist band too? I really want to make sure nothing goes wrong. And if you need to know, I have the Corsair 600T case. Thanks.