Re: Steel Pipes For Orgonite Cloudbusters?
1" copper pipe has an outside dimension of 1-1/8" (1.125")
1" EMT (steel galvanized electrical conduit) has an outside dimension of 1.163"
The EMT is 0.038" (38mils) larger diameter than the copper water pipe. That may not seem like a lot but its enough that you're not going to find a coupler to mate to the copper water pipe.
If you go completely steel, I did find a screw-type compression coupling to join two pieces of 1" conduit ($1 each which is pretty reasonable) but I don't know if it would be strong enough to support the weight of a 6 foot length of conduit standing straight up.
I guess if you put 3 collars on the pipe (one nearer the top, one in the middle and one near the couplings, that would tend to stabilize things but not having tried it, I can't say for certain if its going to be strong enough.
With the cost of copper water pipe these days, $32.69/10 footer at Home Depot, a set of 6 to make a CB would cost you $196.14 for the pipe by itself. The couplers would add ($2.42 * 6) $14.52 for a grand total of $210.66 for ONLY the copper to make a CB.
If you went with EMT, the pipe would cost you $7.42 * 6 ($44.52) plus the $6 for the couplings for a total of $50.52. Thats a savings of $160.14. WOW!
Of course this means you have to make the whole thing by yourself or get whoever you want to buy the base from to use 1" EMT so you can mate things properly. It would also mean the diameter of the holes in the spacer plates would have to be a bit larger and I wonder given the odd-ball OD of EMT if you could actually find a drill bit that would give you the right OD for a nice, tight fit.
Nothing is ever simple, is it?
Here's the link I found for the couplings. Seems neither Lowes nor Home Depot carry them. http://www.garvinindustries.com/Ele...uplings/CCP-100
And yes, I am now using 1.5" EMT for EP's. When you consider that 10 foot length of 1.5" copper water pipe costs $77.15 where a 10 foot length of 1.5" EMT costs $13.35, its pretty much a no brainer. Expect to do a LOT of work sawing the pipe to size with a hacksaw. A sawzall could make fast work of it if you're careful. It takes a while. The only other alternative is to see if you can find aluminum pipe to us. Not where to look and since I haven't found any, no idea on the cost.