slk800 heatsink?

[spikemike]

i've heard that the bottoms of this heatsink is not very smooth, is it necessary to sand it down at all and if it is, how do i go about sanding it. IE what grit so forth and so on.

 

[infinite012]

Do a google search for heatsink lapping guides. That's what I'm doing too for my SLK-800u that is expected for delivery later this week. I also heard that the bottoms weren't polished/finished so I will be using various grits starting from 200 and working my way up to 800 if i can find more...

What I did for my other heatsinks: Buy a pack of sand paper from your local home depot (the one that comes with different grits and is WET SANDING FRIENDLY!!). Get home, wet the sand paper for about 5 minutes and put the sand paper on something extremely flat (perfectly flat like a mirror surface) and start sanding away. I bought one of those 3 packs that has 200, 350 and 400 grit sand paper. I sanded with 200 grit for about 30 minutes, cleaned the bottom with a lint free cloth and rubbing alcohol. Move onto the 350 grit (make sure it's wet because you don't want copper particles in your eyes..trust me) and sand for another 30 minutes. By now your arm should be hurting - GOOD! Move to the 400 grit and sand for another 30 minutes or until you can see a reflection. If you need to go for a higher grit, then do so as it will give an even smoother finish with a super duper mirror finish. Finish the entire project by cleaning the heatsink thoroughly and polishing it with some sort of polisher...

 

[HiTek21]

Lapping Guide You might not have to lap your heatsink, run your finger nail on the bottom side of the heatsink and see if you can feel any ridged or bumps in your heatsink.

 

[infinite012]

That's the guide I used!! But WHERE ON EARTH do you get the 3M sandpaper!?!? I was searching for it everywhere but on the site it says you can pick it up at wall-mart??? Is this true? There's a walmart like right next door...literally...

 

[Corporate Thug]

Originally posted by: infinite012
That's the guide I used!! But WHERE ON EARTH do you get the 3M sandpaper!?!? I was searching for it everywhere but on the site it says you can pick it up at wall-mart??? Is this true? There's a walmart like right next door...literally...

home depot, walmart may also have it

 

[Abhoth]

Lapping is all well and good... but I didn't lap mine and running fine and cool with the 800U.

 

[m1ke101]

does lapping really help by 5c?

 

[bgeh]

Originally posted by: m1ke101
does lapping really help by 5c?

if your heatsink is really uneven, yes. but the SLK-800's base is flat, so it might drop a little

 

[HiTek21]

Originally posted by: infinite012
That's the guide I used!! But WHERE ON EARTH do you get the 3M sandpaper!?!? I was searching for it everywhere but on the site it says you can pick it up at wall-mart??? Is this true? There's a walmart like right next door...literally...

I picked up 3M Sandpaper from the local Kragen auto part store. Your best bet is at any auto part store that sells auto body materials. I didn't see any at home depot, they sell wood sand paper.

 

[infinite012]

What's Kragen? I've never heard of it I live in Virginia...if that helps anyway

 

[FluxCap]

not smooth? News to me, probably the smoothest heatsink on the market.

 

[GooGooCluster]

They have it at the walmart next to me. auto parts section. If they dont have it. Usally any auto parts stores have it.