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Will do. I'm glad someone's interested. I've got to go to the hardware store and see if I can find some screws, since the ones that came with my radiators are either too long (and would dmg the fins) or else to short (they are meant to attach to the radiator through a sheet metal case housing, not 3/8" plywood).

Expect to see this thing come together very soon, because otherwise all I'm missing for my rebuild is the cpu, and as soon as I have that I'll be anxious to get the rebuild done and start using it.
 
Also, the photo shows what I am calling the case frame. All of the components will be attached to this frame. I will be using 1/4" ply to make an outer casing that will seal it all up, have the corners rounded over, and present the outer look of the case. The outer casing will have the fan and radiator grills mounted to it in removable panels. The outer casing will also have the red tolex covering, the metal corner pieces, the case handles, the rubber feet, etc. The inner frame is made from 3/8" ply, which may be strong enough by itself, but I'm not counting on it. The 3/8" inner frame plus the 1/4" outer skin (which will be glued together where appropriate) will certainly be strong enough.

The overall look that I'm going for is copied directly from a guitar amplifier cabinet I built several years ago. It will have the same red covering, the same screws/washers attaching the removable hatches, very similar black metal corner reinforcements, etc. The handles will be a little different, but this computer case will have black spring-loaded handles countersunk into the top to make moving the computer around easier.

Here's a shot of the guitar amp:

Owcraftsman, since you're interested, here are some photos that show better the radiator and main fan installation. I also placed the 2x120mm grill on the top of the case where the Swiftech H220-X will be installed. I haven't routed out the hole for the Swiftech yet.

Right behind the two 2x180mm radiators will be a 1/4" ply bulkhead which will seal off the radiator chamber from the rest of the case. The three 140mm fans will blow air into the front of the chamber, and it will have nowhere to go except out the two sides. The airflow through the rads won't be as strong as it would be if I installed four 180mm fans directly onto the rads, but it should be enough for such a large radiator area for good cooling. Plus the Swiftech will add its own 2x120mm radiator to the cooling. If it turns out the three 140mm fans don't add enough airflow I can always add 180mm fans directly to the radiators in the future.
 
I'm thinking of making an inverted V-shaped fin to mount opposite the three fans on the back wall of the radiator chamber to redirect the air to either side, toward the radiators.
 
I hung the grills in front of the fans and radiators with tape just to see how it will look.
 
ps: back in the early 90s I was into R/C planes and know what Monokote is, having applied it to several planes and gliders
 

 

 

Looks like that puts the top vent very close to the bulk head right?. Roughly calculating here you have approx. 55% less intake area than exhaust  3x140 vs 4x180 which I think could be an issue for you. IMHO you'd be better off with 4x 180 fans and more intake area especially when you consider any type of filtering to minimize dust. I'm wondering how you plane to address access to internal parts for maintenance? If you plan on using a steel motherboard tray what one have you chosen to use?
 

owcraftsmanLooks like that puts the top vent very close to the bulk head right?. Roughly calculating here you have approx. 55% less intake area than exhaust  3x140 vs 4x180 which I think could be an issue for you.

It's actually worse than that. 2*(2*180*180) = 129600 mm^2 of radiator area, for only 3 * (pi * 70mm^2) = 46181 mm^2 for the fans. The radiators are 2.8 times the area of the fans.
 
Here's what I am hoping mitigates this:
1) 180mm fans don't have very high static pressure
2) 180mm fans right up against radiators will see enough backpressure that they won't get anything like their normal uninhibited airflow throughput
3) 140mm high airflow fans will see greatly reduced backpressure due to venting through 2.8 times the area that they would see if they were mounted directly to radiators, meaning they'll get much closer to their full throughput
4) all of the 2x180mm radiator area will have cooling air flowing through it, whereas with 180mm fans all of the radiator outside of the fan circles would see no airflow. This is about 20% of the radiator area that's typically wasted by fan-on-radiator installations.
5) all of this will mean that the airflow of 3x140mm high airflow fans will be closer to the 4x180mm fans than we would assume at first, and that finally, it won't matter even if the airflow isn't as high as it could be because it's simply so much radiator area that it will still effectively cool one overclocked 8-core Core i7 6900 and one Geforce 1080 SC, possibly two 1080s in the future.

owcraftsmanI'm wondering how you plane to address access to internal parts for maintenance? If you plan on using a steel motherboard tray what one have you chosen to use?

The front fan mounting plate, when removed, will give sufficient access to the interior of the radiator chamber for maintenance.
 
I'm not going to use a steel mounting tray, though I suppose it's not too late to decide to use one if I saw one for sale that looked promising. I haven't actually looked. I've been planning on laying the motherboard onto a sheet of 1/4" ply and using a pencil to mark the holes where the mounting standoffs need to be. I'll drill into the 1/4" ply at each of those locations, put a dab of epoxy into the hole, and push a brass motherboard standoff's threads down into it. I picked up a bag off standoffs from Amazon. I don't know whether it's necessary for each of these standoffs to be grounded, but if it is, I can soldering some wire from each standoff to a single point on one standoff and then run a wire to the casing of the power supply. I'll leave a hole in the 1/4" ply mounting plate under the cpu socket so I have access to the water block's rear support plate. The motherboard mounting plate will then be screwed to some rails I'll attach to the case frame. Both sides of the case will have access panels that will be removable giving me easy access to both sides of the motherboard area. The motherboard will be raised up enough to give me space underneath it for cable management purposes.