Originally Posted by CalmYourself
What about replacing the copper with pvc tubing and using garden sprinklers for the jets in the bottles?
Should be a lot cheaper than copper and no need to beat the copper into submission. Also no soldering. I would also include a drain plug.
Big up for this idea, its gone straight onto my todo list.
I am currently building one too and had a similar thought in regards to the plastic vs copper.
I did look at pex plastic - the tubing is cheaper but the cost of the fittings add up quickly resulting in it being more expensive. (Might be cheaper if you can get bulk/contractor prices?)
I also looked at garden sprinklers - looked promising. didn't actually prices this one out. I didn't go too far down this road as I could not find the fittings I thought I would need.
Ultimately I went with copper. I will be putting on pvc end caps or sleeves to protect the bottle tops.