A good point regarding use of a hack saw. I like the idea of copper pipe very much my self. Should be better for a slight increase in cooling, and lower pressure drop due to the slightly larger ID at the same time.
But why not use softer/bendable copper pipe like used in air conditioning & heating systems, even used to plumb some tight places in homes under sinks and bathroom vanitys. The best of both worlds perhaps. All the advantages of hard copper, but easier to route like plexi tube as well.
I've been thinking on use of this bendable copper for the system I want to build. I'm thinking of making use of 5/8" line with just a bit of clear tube to connect the 5/8" copper line to blocks. Should allow very low pressure drop with ease of routing. My local hardware sells it by the foot so I won't have to buy a whole coil.
Only thing that bothers me is, if it's a good idea, why don't I see others doing it?:shrug:
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