Lapping Problems - HELP

1kiwi

1kiwi

1kiwi

Soldato
Joined
25 Oct 2007
Posts
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Location
Los Angeles
Guys,

I'm using this guide to lap my TT. Unfortunately, I've run into a few problems. My TT is pretty flat, in fact, when i hold a razor blade over it, hardly any light comes through. I had read however, that if you bother to lap you CPU, then your HS better be flat otherwise you shouldn't even bother. So i decided to go forward with it.

Anyways, i started lapping by dripping some water over the 220 wet n dry. I then used a back and forth motion which immediately started to remove the grit from the paper. The HS was also sucking to the paper which is probably why the grit started to come off. From the below pictures, can anyone give me any suggestions.










As you can see, the heatsink has taken the grit right off!!!!! I only have another 3 sheets like this so any advice would be much appreciated!!!!
 
How much, i used quite a bit and it made a mess of the sandpaper. Should the heatsink be pushing water around?

I checked out this youtube guide and he doesn't seem to use water at all! What are everyones thoughts?

Does anyone know of another guide, other than the one stated above.
 
Thanks W3bbo, I'm doing it inside so i think ill try without water (and see how much dust there is) and then if it's really bad use water. In your experience, how much water is required. Do you want the paper soaking or just a few drops?
 
Thanks helmutcheese. So what your saying is to basically sand down the edges to prevent them from cutting the paper. Also, your picture didn't work. Perhaps you need to add in the URL.
 
OK, dry is going well! The technique im using is as follows:

Im using 200 to get it nice and flat. Im using a back and forth motion, and then rotating the HS 90 degrees. So i am essentially sanding in different directions every minute or so. Should i just be sanding in one direction?
 
I was planning on printing it out. Allot of people only sand in one direction. As im changing direction ever minute or so, im constantly changing direction. Whats your thoughts ?
 
ok, ill do it for another 30 mins with 220 and then post my results. I have also drawn a cross with a marker. After about 3 mins, i can already see some high spots forming.
 
Hi gyus, im now onto the 600 grade. I sanded with 400 until all the lines were consistently running the same way. It took about 30 mins. Should i be only sanding in one direction with the 600 or rotating 90 degree 60 second intervals as before ?
 
hahaha, understood. It's not that i havnt read the guides. Just with all the conflicting opinions - well, it's nice to have some reassurance.

Anyways, have a good one and ill post how i get on. I'm going to switch to just one way as explained within this video.
 
Parts are still on there way mate :( Will be here this week so i'll let you know how i go. I'm going to create build log anyway.
 
To answer your question:



Pretty good :D

I'll do load temps etc ASAP.

VCORE in BIOS = 1.275 - Is that good?
 
Oh, does anyone know of a thread that details suggested bios settings for the P5K? I know there are around but can't remember for the life of me where i saw them :confused:
 
I think this chip is a good-in. Very little vdroop and pretty good temps when you consider that the AS5 hasn't bedded in yet.
 
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