View Full Version : Fixing a Damaged HSF base
Hi there,
I've got an Akasa Evo 120 Copper heatpipe cooler as shown here
http://www.akasa.co.uk/akasa_english/spec_page/coolers/spec_ak_920.htm
It's a lovely cooler but lately i've been experiencing abnormally high temperatures. At stock speeds I'm hitting up to 58*c load which is rather high compared to the ~40*c load it used to manage.
Over the 12 months of operation, it has been reseated many times. This has resulted in a number of scratches on the copper base and the base also appears to have suffered from corrosion? The base has turned a dark green/blue/black in areas.
What would be the best way to go about smoothing out the copper base?
Cheers,
Mul
Sparky
10-27-2006, 07:49 AM
lap it
Cheers for the speedy reply. ;)
Mul
NickS
10-27-2006, 08:07 AM
To remove corrosion, let it soak in soem vinegar :)
Excellent, thanks :)
edit: *idiot query* surely it'll just corrode more?
Mul
Sparky
10-27-2006, 08:24 AM
Vinegar shouldn't make it corrode. But if you have to get scratches out anyway lapping would get rid of the scratches and corrosion all at once :)
Sneaky
10-27-2006, 08:46 AM
lap it!!
Right, cheers.
After googling some guides, the process of lapping seems relatively simple. Just need to set aside some time to do it.
Mul
Use said vinegar to wash ti off first. Then lap it up to about 600 grit. That's about the highest you should go since it's tested that after that, performance starts to degrade. Mirror finish is only for looks.
Sneaky
10-27-2006, 03:51 PM
Use said vinegar to wash ti off first. Then lap it up to about 600 grit. That's about the highest you should go since it's tested that after that, performance starts to degrade. Mirror finish is only for looks.
since when does lapping beyond 600 grit degrade performance?
i've lapped both my IHS and HSF to 2500 grit and performance seems to be at an all-time high...
Ultra-120:
http://www.fragtek.com/sneaky/u120_6.jpg
920 Presler IHS:
http://www.mac-owner.com/sneaky/ihs/920/9.jpg
but I will add... that with well-lapped surfaces like above, using AS Ceramique instead of AS5 seems to give me better temps
NickS
10-27-2006, 04:03 PM
Maybe because Ceramique is more dense?
Shift
10-27-2006, 06:18 PM
Off-topic post
but I will add... that with well-lapped surfaces like above, using AS Ceramique instead of AS5 seems to give me better temps
Wait wait, AS Ceramique is better than AS5? I thought As5 was the highest quality grease you can get... because man AS5 is expensive.
NickS
10-27-2006, 06:24 PM
Noo. Ceramique and AS5 are MAYBE 1*C apart.
Ceramique is cheaper, easier to clean, easier to spread, takes less time to set, and you can use it in ANY temp condition.
Shift
10-27-2006, 06:28 PM
Noo. Ceramique and AS5 are MAYBE 1*C apart.
Ceramique is cheaper, easier to clean, easier to spread, takes less time to set, and you can use it in ANY temp condition.
TY so much!
I was about to order 3.5 grams of AS5 for 6 bucks when I can order 22 grams for 7 dollars!