Tig project coming up

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I've decided on a project to work on while learning tig in the next module in school and wanted to run this by you guys.What I'm going to do is make a custom pc case using brass and copper sheets and specialty wood.  The brass and copper plates I plan to do some acid etching that I'm learning how to do through http://steampunkworkshop.com/ and you can find the projects in various forms that I'm learning from on the right side column.  The internal structure of the case will also include brass and copper to hold all of the internal parts such as the motherboard and drives and power supply so some of the brass and copper will have to be tig'd together so what is the correct way of tigging brass to brass and copper to copper and brass to copper and what problems will I be facing in doing this.
Reply:I've never tig'd copper to copper, brass to copper, brass to brass, so I can't give you advice in that regard except, have you considered soldering or brazing? But regarding your project, I'd really like to see it when you're done. I was talking with a guy a little over a year ago that wanted to do something similar. Don't know if he ever got around to it.
Reply:Just make sure you acquire  weldable copper and a weldable brass alloy. Another uniqe combination is stainless to copper. Alloy 122 (copper), Admiralty brass & Muntz metal are weldable brass alloys, although I would rather use a bronze alloy rather than a brass from a weldability point of view.Copper to copper welds-use off all from sheet for filler metal to get a color match. Silicon bronze (Everdur & ERCuSi) for brass welds.
Reply:Have you ever welded stainless to copper weldinglifer? I have. Maybe it was the alloys I used, while it can be done, it wasn't a very functional weld. Didn't take much to get it to snap apart in a destructive test. Though for the pc case project Big65mopar is doing it may work. Not like a computer case has to endure any kind of stress.
Reply:Well some of what I mean by copper to copper and copper to brass entails tigging two inch tall standoffs of copper to a brass sheet so that cable routing can be managed behind the motherboard along with a return tube for the lava pool ( a detail I will explain later but please enjoy the curiosity during the intermission )  and possibly to conceal the hard drive to allow for better air flow and some detail work.Ok so what is a lava lake?  Well the case project is called tormenting agony because the etching to the plates will be of someone that I would best describe as creator of tormenting agony in my life in the past and creating the case is a way of putting it to a visual description.  Both main panels will have a different etching of a picture of the devil woman with a border of ghost like faces in agony on one and thorned roses with dark red paint inlay on the other.  The lava lake is actually an idea I came up with involving the top panel and the front panel where the top has a jagged opening looking down on a lake of churning lava that ties into the front panel with another jagged opening revealing a lava waterfall that will be in a clear acrylic tube.  I got the idea from those late 80's / early 90's table top titling wave display where a rectangular clear box would tilt back and forth creating a blue wave.   Heres a pic of a similar one, http://www.officeplayground.com/Prod...Id=133&index=0.The lava lake will be kept separate as will the tube from the rest of the case in a welded box so should there ever be a leak it wont get any water and or oil into the electronics.  The side panels will be brass while the smaller panels will be copper and the base of the case will be Borneo rosewood.  Most of the welds will be inside the case with the internal support structure being variations of brass and copper tubes instead of the typical pressed and molded aluminum, there will be two brass handles at the top for carrying.  Weight wise I figure that the case will be heavy but really its going to be a show piece so I will be using thin sheets to minimize weight as much as possible.
Reply:I am also a Steampunk junkie.   Have been for over a year.  They have some great ideas.  Just wish I could think of things like that.I am tired of Ketchup, I want the Gravy...
Reply:Well the etching and the wooden base and using copper and brass are takes from the steampunk genre but the next project in the works is actually going to be a working steam pc case though it will use compressed air to run certain parts of the case.  I've also found some articles online about retrofitting pressure gauges to work with electronics.