Best heat transfer adhesive?

[EgeWorks]

I'm making a composite waterblock i.e. layered plates, and was wondering what the best way of sealing the plates so that they dont leak(duh!) and have optimal heat transfer. What is the best option?

Ege.

[---X---]

Solder the edges, and fill the middle with Arctic Silver 3

[EgeWorks]

OK- But what if there is a mix of aluminium and copper?

[---X---]

I would think that would solder as well, I dont have much experience as far as that is concerned, but also realize that there *MIGHT* be concerns as far as some kind of chemical reaction taht would deteriorate the metals if water comes in contact with both of them I forgot what its called...some say it happens others say it doesnt but just so you know ;)

You could also try marine goop on the edges, with some bolts or something to actually fasten the plates together

[EgeWorks]

yeah, they are bolted. AS3 on the plate with goop on the edges as well would probably do the trick.

Thanx

[Neco]

Copper + ALumn = Battery effect is what your talking about.

Adding Water Wetter to your water should take care of the problem

[wildfrogman]

JBweld, have heard of lots of people use it for just that. It when heated up and under pressure for 24 hours to cure it has great thermal conductivity and if you coated the aluminum top, had the aluminum on the bottom so no JBweld went into the copper channels etc it would take care of the battery effect and hold really well. Just remember to prep the area by a slight fairly fine sandpaper as to give the epoxy alot of area to grab onto. I hope this gives you a few ideas and helps a bit.

[EgeWorks]

JBweld sounds pretty good, I'll post some pics when done(It has an old P133 HS inside).

[wildfrogman]

Oh, and if that heatsink is adonized it shouldnt cause a battery effect. But i would still use a chemical soup rather than straight water to kill bugs and slime.

[EgeWorks]

Using chemicals is planned, I took off the anodizing as it was stripped in some spots(some idiot put screws into the fins...not me!)

Thanks for all the advice.