I'd like to make a small scale one first but I am finding it hard to source hard drawn copper tube in lengths shorter than 6 meters. Anyone have a good online supplier that will deliver to Australia?

Maybe the shipment costs as much as the entire 6m tube ;-))
Here in _AUSTRIA_ - you get them in 2.5m length in every DIY market.
So maybe the best option would be to find other willing replicators in Australia - and cut the 6m piece down (already in the shop).
Another problem I expect - is that if you don´t use the same brand wire - the insulation might have quite different dielectric properties (which is not specified for this wire). This means that the necessary wire length for the capacitor might be different - and the even the entire setup might not work - or different. Both coils for kind of LC tanks - the "C" be different either.
 

@neptune @fritz nice thinking. Will get on to it tomorrow. Thanx

By water lines I believe he is referring to the Telluric Current grid. 
Here is a link with some maps.
http://www.nap.edu/openbook.php?record_id=898&page=232
Maybe someone can find a better closeup map.
Or using a quad amp chip and few other components maybe we can build an energy field detector to find them.
The use of divining rod may not be far fetched, where these grids cross does contain a concentration of energy .
A simple set can be made with 2 pieces of copper tube you hold in your hands,
with a 90 Deg. angled piece of bare copper wire placed in each one, so they can turn easy in the tubes. 
The way you use them is: you hold them in your hands so the 2 wire's ends are perfectly level, 
one a little higher then the other and as you walk around the 2 ends will cross each other
when you find one of these nodes.  It's an easy thing to test for your self.

Concerning water lines and dowsing:

http://en.wikipedia.org/wiki/Dowsing

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Dowsing is a type of divination employed in attempts to locate ground water, buried metals or ores, gemstones, oil, gravesites,[1] and many other objects and materials, as well as so-called currents of earth radiation (Ley lines), without the use of scientific apparatus. Dowsing is also known as divining (especially in reference to interpretation of results),[2] doodlebugging (in the US)[citation needed], or (when searching specifically for water) water finding, water witching or water dowsing.[3]
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http://www.youtube.com/watch?v=KeRCcFB66fU (Using Dowsing Rods To Find A Water Line)

I do not know what a dowsing rod shows (I know what people claim it should show, but proof is difficult). In my house a dowsing rod moves in a strange way when I cross a certain spot. I prefer to use two L-shaped iron wires (which can turn each in a ball pen plastic tube held like in the video). Over the years I tested various dowsing rods in several places (indoors and outdoors). Sometimes I see a movement in the dowsing rod at a certain spot, sometimes not. When I do it, it is not always consistent.

I met people who were very good with it (as far as consistency is concerned). In rural areas I know of people who find good spots for digging a well and they charge a little money for it. I also met people who claim that they can find "dangerous" spots in your house and I know people who had their house "measured" for that (by someone who charge money for it, not much money).

Whatever, the "finding of a water line" and the "electrocution of the quartz sand" are the tricky parts of the "magic pyramid".

Greetings, Conrad

Note that TT claims that the input energy comes from the earth in an upward direction .He has been working on this for at least 5 years . If I was in that position , I would have tried a variety of materials to try to shield this energy from the pyramid , as this might give a clue to the type of energy we are dealing with . If he is right , then the actual pyramid is acting as a concentrating reflector . The pyramid may not be the best shape for this purpose . We do not use pyramids to receive satelite signals , we use a parabolic reflector . OK maybe it is not so easy to make a parabola from gypsum board . Even if divining is real , it is not a thing everyone can do . The logical thing to do would be to walk around with a small pyramid connected to a meter .As always there are more questions than answers .

It seems a lot of forum members have wasted time with this. I've come across a circuit in Patrick Kelly's pdf book chapter 7 page 8 that really works. It's nothing to do with pyramid power but it is free energy. It is worth developing. It is an aerial system and the circuit is quite easy. You'll certainly get some energy. I think if we can tune it we may be on the trail of Moray and Tesla.

downloaded the book, thanks. Do you know of any fora , threads where this is being worked on?

@K4zep .Re the space problem . TT says that the pyramid frame does not need to be welded . Why not make it with bolts and wingnuts so you can strip it down or build it up as required .

Just a thought . Aluminium may not be the best frame material , as we do not know if it needs to be magnetic as well as an electrical conductor . You could use slotted angle iron used to build industrial shelving , or even us the " expanded metal" perforated stuff used for wall corners when plastering .Available where you buy your plaster board .