So far I've completed the northbridge and gpu waterblocks. They are made by flatenning pipe and sordering copper caps on top. I've yet to use them...as I dont have my liquid yet. I did run them each standalone with tap water. The only problem ive found is I used a hammer with a curved end to flatten the blocks...I need more than ever to get a flat one as it makes lapping the blocks much more tedious because of dents in the base.