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Originally Posted by |kbn|
I was making a wb from a thermaltake dragon heatsink - it has about 2 inches of solid 44mm diameter copper inc the grid of pins on the top. It was really perfect, but being circular I gave up on methods to seal it/make lid.
Building up walls from brass isnt the easyest thing. I tryed similar from copper sheet, and I couldnt solder the barbs on becuase the rest just fell apart. Silver soldering will help give it strength though and it allows you to use other solders and colder flames to stop the first bit from unsolderring itself.
I intend to try again with the walls method to make a mosfet block for my nf7-s. Probably wont have any fins given the small heat output, but getting it to fit in place propely and the barbs will be difficult I think.
How thick is the brass? You could use two or three layers of it to build up the lid, instead of
using walls. Easyer to solder too... or you can use screws to seal it.
Brass is good enough for waterblock bases - slightly better than alu but wont corrode, so that might be worth trying.
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with the soldering the stuff togeather and it falling apart.. mabie you could put the rest of it in water so the rest dosnt heat up then put the barbs on
and the silver stuff.. its not silver solder, its some silver brazing stuff, i forget what its called but its not solder
the brass is just 2mm thick
the block i have at the moment.. i made out of brass because it was just lying around
its not all that good though, made it ages ago and didnt know too much about water cooling then
im just starting to cut the copper HS to size, dont have too much time, only got a little done, im not sure how im gonna cut the fins, i need to cut some off 90 degrees to the way they run because its too wide but i dont wanna cut the base becasue i need that for mounting, theyre real thin so im not sure how to cut it
