i turned back to the 400.. been doing it for like 45min.. nearly dissapeared..
shud i still continue with the 400, and as soon as it dissapears, go to 600, smooth it out, 800, smooth it out, etc?
i've been using up/down motion and turn 90 degrees after lets say 30 times..
is that a good method? or should i use another? if yes whch would you recommend?
The main issue to keep in mind is if the IHS is FLAT, not smooth. Have you checked the surface with a straight edge or by using the water & glass method? Even if the IHS has a polished finish, temperatures will not drop unless you were able to flatten the surface almost perfectly.
As for the nickel plating, removing it entirely will only give a negligible reduction in temperatures, but it doesn't hurt to lap the entire nickel layer off if your willing to spend more time doing that.
well my P4 aint working.. so i just used its processor to practise a bit..
i've just finished lapping my i7.. i tried the razor blade test.. i cant see any light seeping thru (as in reflecting on the other side), but when i place my head/eye on the same line with the razor blade edge touching the processor, i can very vaguely see the light on the other side..
i've tried testing flatness using a graph paper, and the reflection the CPU makes..
the reflection of the lines are pretty straight, besides the very edges of the processor (i find the corners of the i7 a bit curved, and only the 400 and 600 grit were able to make an impression on them)..
if thats what has to be tested, i find it kinda impossible to prevent this, as its light and ull be able to see it even in the smallest space..
Nice! I suggest you pop it in and try it out But before you do, be sure the contacts on the bottom of the chip are clean; the copper dust can cause a "jumper" between two contact areas, leading to a short. I've found that using a lint free cloth or q-tips with rubbing alcohol can clean off any dust you find (if any).
just finished lappingmy hfs.. and started relapping my CPU..
should i get it down to the level of the corners? the corners are pretty damn low (done an X mark.. sanded like for 30x8 rounds on the 220 grit.. and the marker on the corner is still visible).. the difference of the level of the corners is even visible by the naked eye..
or should i give up with the edges and just move on the 400 flatten the middle even further and polish with 800 1000 1500 and 2000?