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RoadWarrior
12-02-01, 02:25 AM
Hi guys,

Here's my waterblock so far, well, a somewhat dodgy sketch of it anyway. ( Please Santa bring me a digital cam, I've been good, mostly. )
As you can see I hope, it uses a heatsink assembly that has a circular mushroom shaped sink that screws down into a base that slides over the CPU and is held on by side clips (yes it might need some more support, I'll be figuring that out later) It came out of my wifes old P100 and used to have a 1CFM 486 sized 5V fan on it :) (Yep I think it used to overheat in summer) This is a perfect fit in the end of a piece of pipe I found, so I sawed a section off it and made top and bottom plates to hold it together. Bolts will clamp together at the 4 corners. I will be sealing it all with RTV as well.

I was hoping to get the sink to screw into the bottom plate, but my holesaw chewed out the hole about 1/16 too big, so I'm going to have to tap in some small countersunk screws to hold it. The close fit and the sealant would probably be enough, but I want to make sure.

The nipples are yet to be placed. I'm definitely putting the inlet right in the middle of the top plate. Shooting stright down into the center of the sink. I'm putting a flared and flattened bit of pipe on it to bring it to about 1/8" above the fins, the spray will be spread by the nozzle at right angles to the directions of the fins, and also I sawed a slot across them in the center to help with the spread out as well.

The outlet, well I'm going to try drilling the wall of the tube as near the top as I dare, off center. This will make a tangential outlet that I hope will encourage some spiral flow. If the drill is skipping off too much while I'm trying to do that, I guess I'll have to get it alongside the inlet. Though the sealing washers I have are too big for that so I'll have to cut them down.
I think I'll be getting it pretty much finished tonight. I won't be able to report any temps or anything, I've got a bit of an ageing collection of K6-2s on old boards with no temp monitoring. I'll tell you if it lets me clock any any higher though. I've got a couple that seem heat limited. Hopefully this will fit the duron or athlon I hope to get in january or february.

Road Warrior

The Overclocker
12-02-01, 04:30 AM
nice, i would put the second nossle in the side of the pipe as close to the heatsink as possable to get lots of flow over the heatsink. the only problem i can see with you design is that their might be too much metal inbetween the water and cpu

RoadWarrior
12-02-01, 05:02 AM
Yeah, I was kinda wondering about the thickness, seems like I've got about 3/16 of aluminum in the bottom of that sink. One thing I was thinking of was maybe to get a dremel and stack a few cutting wheels on it and gouge down into the "screw" part a bit.

Anyways, I can experiment, after I see what it'll do by itself. It's pretty modular though really, I'll maybe find some copper plate to make a bottom for it out of. Then I've screwed up my cunning fastening plan, and will have to rig a clamp for it, but there's a few possibilities to try with it.

I got a hole drilled at a tangent in the pipe like I wanted at the top. I'm thinking it will work best at the top, but I can invert the tube and test it on the bottom too, kinda nice how it's a bit of an erector set like that.

Looking a little more on the ghetto side than I wanted. Got these awful drill bits that wander off center :rolleyes: Also the hole in the tube for the nipple kinda ovaled out a bit and I think I'll need epoxy in it.

Gotta solder up my input jet nozzle now...

Road Warrior

The Overclocker
12-02-01, 03:17 PM
Originally posted by RoadWarrior

Looking a little more on the ghetto side than I wanted. Got these awful drill bits that wander off center :rolleyes: Also the hole in the tube for the nipple kinda ovaled out a bit and I think I'll need epoxy in it.

Road Warrior

try drilling a pilot hole with a thin drill bit first. watch out with epoxy, i epoxyed two nossles on my lid and the epoxy cracks when too much pressure is applyed. i have had no leak problems yet though