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Unread 02-23-2004, 11:02 PM   #11
MMZ_TimeLord
Cooling Savant
 
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Join Date: Apr 2003
Location: San Mateo, CA, USA, Earth
Posts: 433

Okay... got some more completed... Specifically the main block of the power supply water-cooling solution.

First I cut a piece of 2"x5.5"x0.5" copper from my bar stock.

Then I sprayed on a 3M adhesive and attached the template.

Locked it in my mill and started cutting... First thing I noticed was that a two flute endmill has a tough time routing channels.



So I put in a 7/16" drill bit and drilled the channel down to the depth I wanted in as many places as I could.

Then I went back with the end mill and cleaned it up.



After I was done (I decided to leave the dimples in the channel), I took off a few thousandths to remove the template and reveal shiny copper.



After all of that was said and done, I was going to use my torch to tin that surface to attach to the sheet copper. I decided to try something a little different ...

I preheated the oven to 450°F and put the copper in on a cookie sheet (non-stick kind).



When it was hot enough to melt the solder, I tinned the surface like so...



After it was fully tinned... I pulled it out and let it cool so the solder would solidify again.

IMPORTANT!!!: If you do this MAKE SURE YOU HAVE A VENT HOLE DRILLED. I almost forgot this which would have ruined my piece.

When the solder was solid again... I put a sheet of 4"x10"x0.025" copper on the cookie sheet and put the tinned piece upside-down on it and lined it up with the corner (NOTE: USE AN OVEN MITT!!!) and put it back in the oven for about 10 to 15 minutes.

The bigger the copper piece, the longer it takes to remelt the solder.

Here is the piece after it came out...



I will have to leak test it and see if I got a good seal. If not... I can take it and put it back in the oven and flow some more solder around the edges.

That's about it for today... Will try and get the rest of the power supply solution done tomorrow.
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