Riveted copper and TIG welding.

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Been looking at doing several projects involving copper, size/thickness: ranges 13 to 16 gauge copper sheets.My plan is to build a container that is constructed of two Frustum halves, one in the bottom and one on the top. Where the two Frustums meet, in the middle, the radius will be the same, well, I have/am still debating that, depending on how strong TIG welding is in fusing the metal together.Let me elaborate further: I can implement one of the two following options to join the halves together,1. Either, do a butt joint of the two Frustums and then spot weld around the diameter and then begin to do my final welding, or2. I can allow an extra overlap section from the top Frustum, bend, cut and tuck in to the bottom half and then rivet around the diameter and then go about TIG welding.After doing a lot of exhaustive  research here and there, i was not able to find an answer to my questions. I guess, to be more specific, can you please give me feed back based on your experience, (well, here is another piece of information, what i am building, is going to be a container and will be holding liquids and it is only going to be about 3.5 gallons capacity)A) If i was to do the Butt Joint scenario as i described, would that work? Is that how it can be done?B) My concern in the second scenario is, if i go through the additional work of putting rivets every inch or so in the metal, would i be able to TIG weld and plug the holes. Then the question becomes, do i have to weld from the inside and or outside of the container? Regardless, I am searching to find out, how to TIG weld when there are rivets in the metal.C) I am going to throw this one last question in as well, since i have not done any welding and am now looking at purchasing a TIG welder and have been looking at hundreds of the brands and what each model does and getting a head ache from it, if the butt joint can work, and since this is a small container and i am sure that there is not a lot of pressure to bust open the sides and break the weld. How much pressure can butt joint that are welded using the TIG technology endure... let's say, i increase the size of the container, you see where i am going with this... any ideas are greatly appreciated.
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Reply:Originally Posted by boatbuoyhttp://www.clawhammersupply.com/  and they have videos showing how to build your still.
Reply:How many hours have you decided you will dedicate to tig practice?This ain't no weekender you're planning Dave J.Beware of false knowledge; it is more dangerous than ignorance. ~George Bernard Shaw~ Syncro 350Invertec v250-sThermal Arc 161 and 300MM210DialarcTried being normal once, didn't take....I think it was a Tuesday.
Reply:Originally Posted by MinnesotaDaveHow many hours have you decided you will dedicate to tig practice?This ain't no weekender you're planning
Reply:Use straight helium and DC- with copper filler weld it up like steel.......Easy stuffhttp://im1.shutterfly.com/media/47b8...D550/ry%3D400/  Miller Dynasty 350Twenty Six HammersThree Crow BarsBig Rock