Um, yeah, I want my 3 hours of lapping back.

[jedisoulfly]

Originally posted by: the unknown

Originally posted by: jedisoulfly
To ensure a perfectly flat surface check out this site. The 6" x 8" one for $12.95 ($20.85 after shipping great shipping considering it weighs 12lbs) is more than large enough IMO for the lapping of HS and IHS. Has bilateral accuracy of plus or minus .0001"

I have seen advertised for some HS (can't think of what ones off hand) that they hand lap to 1200 or sometimes 1600. Most likely they are lapping on surface plates just like this. The average table, counter or desk top is going to have a much higher tolerance than .0001"

http://www.grizzly.com/product...=granite+surface+plate

Maybe I'm just being a smart-ass here, but wouldn't this surface only be as level as the one you put it on top of ? And if you're hand lapping a CPU, uneven pressure when grinding away at it would make a much bigger problem than the surface you're doing it on? Just seems extreme to me, even on an enthusiast forum

The surface area of the plate would remain flat regardless of the actual level/plum of the plate. As long as you keep the surface being lapped as flat as possible to the plate the chances of remaining flat are better. HS that are lapped by a surface grinder are going to yield tolerances of up to .0001" With a surface plate like this the only thing you would worry about would be the actual surface of the paper being used (does it have any wrinkles or is it pitted in some way) and just how flat you can keep the HS/IHS to the plate. Obviously this is not for someone who would only lap one or two HS/IHS but if you lap a lot this would be a great tool to have.

 

[soccerballtux]

Originally posted by: Capitalizt
I'd bet anything that your problem is too much thermal compound..

You know...with lapped surfaces you barely need ANY arctic silver on there. If you have two perfectly flat surfaces and a big goop of stuff in between them, your temps are still going to suck.

You should be using a **PAPER THIN** layer...and I mean that literally.
Take a drop and smear it across the CPU with your finger in a baggie, then use a "paint the fence" motion with a razor blade to achieve a perfectly flat, perfectly smooth layer of AS5. It should literally be as thin as a piece of paper. Drop the heatsink on...then let it bake onto the processor for a few days (it takes several on-off cycles to settle in)

If you don't see a decent drop in temps, your problem is most likely bad airflow in the case.

Aye I've done those things; I'm only putting on a small granule of rice sized AS5.

I'm guessing the only way then is that it is bad airflow. I'm not sure what I should do to improve it though. Any comments on that? I've got 1100RPM 120mm fans for it; one on the front blowing to the back where I have a fan mounted to the case blowing out. Intake in the front of the case.

Maybe I should get another fan and stick it on the side of my case blowing in to the CPU area.