I agree I don't think it will make much difference, but what the heck. I wanted to make another as I don't own the original anymore and I wanted to try and improve on it. The channelling is better than the original pictured below, together with a final pic of the new one. Like you say solder is great and as such the base has no screw holes. I'm also trying to get to an all copper block system for my next water-cooling project which will hopefully be pump free.
