I will just hijack my own post and toss the completed picture here in the front of the post.
Here is the fruits of well over a months worth of work:

This is just one of four for a complete 4 way SLI system.  There will be more more and better pictures taken, but at least you can see what is probably the worlds largest GPU waterblock.  It tips the scales at somewhere around 6 lbs which is more then enough mass to turn it into an LN2 pot. 

 
 
 
 
 
*update* 20 March
CAD design of the block:


 
Pay the colors no mind, this will be a SOLID block of copper. 
 
 
Perhaps you would like to subscribe to follow along and watch the progress? 
 
Some specs on the block:
It will start off life as a 10lbs block of copper...
It has 26.38 square inches of surface area on the bottom of the datum plane of the water channel
That calculates to roughly 13.19 cubic inches of liquid in that chamber, or roughly 0.2 liters of water (for the metric folks) or about 0.8 cups of water!  Almost a full cup of liquid in there. 
 
 
Its coming...


 
UPDATE: 5 April:
quick prototype:

 
UPDATE: 10 April

 
 
 
UPDATE: 30 APRIL
PROTOTYPE COMPLETED!!

 
All sealed up:


Like?
Still have the holes to drill and thread at the top of the block.
 
Holes done:
 
 
UPDATE 8 MAY:
First of 4 monster copper blocks:

 
 
Update June 28:

 
Almost 30 lbs of motherboard crushing copper.
 

Sweet, can't wait to see your creation.

Im not sure, the one I acquired doesn't have a backplate.
 
This block I am designing is a work of art. 

I would need to see a picture of the card, as long as the hole spacing is similar, or close enough where I can modify easy enough. 
 
 

I almost finished the design. I really cant wait to post it... but teasing you guys is more my MO ;)

updated main post.
 
That wasn't too long to tease right?
 

nickbaldwin86
GTX 680 is what is coming... 580s are old ;) and the 680s are already faster than 580 classy

So buy a 680 on release and sent it to nateman and then you can have his awesome craftsmanship on a brand new card.

nickbaldwin86

*cough* GTX 680 *cough*

 
*cough* cough** amen

*Cough cough* This thread is going off-topic. Please don't come here talking about 680's.
 
This is for Nate's 580 block. If you don't care about it, or don't need one, then don't post.
 
If you wanna talk about the speculated 680, then that's why we have a news section.

Eh, no worries.  If the 680 has the same circuit board then its cake to adapt it.

Sweet.  Then I will charge you twice for the second one ;)

Hard to say, I haven't made it yet. 

Thanks!  slight revision:


Took a little material off the caboose

Just wondering, do the waterblocks  hurt the motherboard by the weight? I've never done a graphics card under water and I was always wondering if the weight of the card / copper or whatever would bend the mobo.