Originally Posted by ira-k
Something like that would probably make a better TEC block then just a WC'ing block. It would be restrictive but if it's fed off 2 18W DDC that shouldn't be a problem. The only thing I might change is having so many mid-plates, simpler single mid-plate might work better, plus less chance of leaks between the layers.
I've wanted a dual in block fed from 2 pumps for a while now, hey if nothing else it would be different...
That's not just two loops going into the block, the block itself also takes the loops and keeps it seperate. Not sure I can make a single mid-plate do the job of both the upper/lower 2 mid-plates in the pic. However, I doubt I will do it that way, will probably just have the loops become one within the CPU block, which will make it simpler. Also, I am building up, I want a really thick block. Thought I was gonna have a bunch of .5" thick plates to get the thickness I want, but got this 2" thick copper plate off ebay for $50!!
It's 2" thick x 7" x 6". Thats a .375" thick copper bar next to it
Not sure what grade copper it is, diffinently not 110, maybe 182, seems harder and also a lighter color...under the tarnish. Anyway, the block will be built up to be wide enough and tall enough to put a 62mm TEC on all four sides. The biggest problem is if I actually have enough space for the hotside TEC waterblocks that will be built around the stack, but I haven't gotten that far in planning yet.
Also what's the best way to seal the block? I've seen solder, gasket, and o-rings used but not sure how to size the o-rings. Thanks
I'd go with o-rings, provided I can actually mill the grooves for it to work. I think it's very reliable and reusable and it allows the two surfaces to contact each other. Been looking into getting a spool of really soft copper wire and using it as a crushable one time use metalic o-ring.
Fullcover GPU block? Good luck with that, seems very complicated to me. Two or three, maybe more?? different heightts to deal with and how many screw holes that needs to be lined up exactly? I just went through trying to mill one end of my itx mobos block height down so that it will sit level on my CPU and NB....and that was painfull enough. I'd say try a CPU block first, lot less complexities to worry about. I am regretting trying to make a CPU/NB block as my first ever block, first time ever using a manual mill. Have already made @$20 worth of scrap copper plate lol. Probably woulda been easier to cut a 2" square, a screw at each corner, do the gasket thing, a simple fin patterm and then tap a couple fitting holes. Lot less to go wrong. Instead, I did a weird shape, two surfaces to cool at different heights, a couple screw holes that need to line up exactly...but I don't think that is anywahere as complex to mill as a fullcover gpu block...with a manual mill anyway.
Copper: I started out buying through Onlinemetals, then Mcmsters-carr. Mcmaster's is less expensive usually, but I didn't like that they didn't give me the shipping cost....which can be very bad since I live in Hawaii. However, I read that Mcmasters is very cheap for shipping compared to any store that ships UPS, so I ordered some 4"x36" bars of copper in .1875", .5" and one of brass in .1875". Both Onlinemetal and Mcmsters use UPS, which is expensive to ship...to Hawaii. My Mcmaster order cost me $120 in shipping alone. Now I found all sorts of copper plate deals on ebay. Even bought a .75" thick x 3" x 24" bar from Onlinemetals ebay store since it was fairly cheap considering the thickness. Put in the bid for that 2" thick plate I got and they shipped it USPS, so it only cost me $10 to ship. If it had gone through UPS, it'd have cost me probably $50 to ship...that thing is heavy! Found an ebay seller with a bunch of different thicknesses and sizes for copper..that shipped all uing USPS. Bought out most of his stock of .25" and .5" 4" x XX" bars...since mot of them were around $8 for the bar and even less to ship. Didn't say what grade copper it is other then "99.9%"
Saw Ira link this ebay seller's stroe for acrylic and delrin
really good prices and cheap USPS shipping. Ordered some .5" thick Polycarbonate sheets from him. Was cheaper (even after shipping) then going to Home Depot and getting thinner and probably not as good stuff.