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very high grit sandpaper in my area.
I get my Zalman 9500 today and my q6600 in 2 weeks or so and will want to lap them. I've read up on the process and it all seems fairly straightforward, but I cannot for the life of me find the proper grit sandpaper anywhere. All the stores around here (Dulles/Ashburn VA) carry really really coarse sandpaper (60-320 grit).
Any suggestions on where I could locate some 400, 800, and 1000/1200 grit sandpaper?
I've tried Walmart, Lowes, and Home Depot and have found no luck with very high grit sandpaper in my area.
Thanks in advance.
Depending on how concave/convex your surfaces are, I highly recommend starting with 400 grit. I did for my heatspreader, and it still took quite some time to get it all level.
oh my god, that's just ridiculous... honestly. I don't even use 400 grit to remove rust from 40 year old cars... you'll spend 5 times the amount of effort to remove the grain from that 400 grit then you would ever spend with 1000 grit to start with.
regarding the q6600 IHS, should i use the 800 grit until i see copper? then switch to the 1500 to even it out a little more?
I get my Zalman 9500 today and my q6600 in 2 weeks or so and will want to lap them. I've read up on the process and it all seems fairly straightforward, but I cannot for the life of me find the proper grit sandpaper anywhere. All the stores around here (Dulles/Ashburn VA) carry really really coarse sandpaper (60-320 grit).
Any suggestions on where I could locate some 400, 800, and 1000/1200 grit sandpaper?
I've tried Walmart, Lowes, and Home Depot and have found no luck with very high grit sandpaper in my area.
Thanks in advance.
yes that will be just fine. I suggest taking some masking tape, and taping off the everything but the IHS, so when your pressing down hard against the paper with your IHS, your not rubbing bits of copper into the pins... not a requirement, but I always do it to be safe myself. Make sure you press firm and evenly when your running the processor over the sandpaper, if your light you will cause cupping to the corners.
what do you mean rubbing bits of copper into the pins? the pins are going to be on the side opposite the IHS, which is rubbing on the sandpaper, no?
When you all do your lapping... straight or circular motions - or both?
Last night I first tried figure 8 motions, but the motion above gave me *much* better results. Plus (atleast with the Zalman 9500), it was wayyy easier to control the heatsink and keep it from skipping around. I do not imagine this will be much of a problem with a cpu IHS, though, since it's very light and obviously not massively top heavy like a flowered heatsink.
You may all think I am insane.. but the last two heatsinks I lapped.. I use an electric orbital sander and 400 grit wet/dry sandpaper.
It goes way faster than hand lapping and gets it very flat (except on the very edge). I have done the drop of water suction test..
400 grit will also wear down to a much finer grit if you keep it from clogging up... I was able to get a near mirror finish with only the 400 grit and the orbital sander.
you definately have some balls, lol. most of the time (almost always) sanders have thin foam pads that the paper sticks to, and that will cause your sanded surface to become convex shaped... better check your contact patch real close with a straight edge.
oh my god, that's just ridiculous... honestly. I don't even use 400 grit to remove rust from 40 year old cars... you'll spend 5 times the amount of effort to remove the grain from that 400 grit then you would ever spend with 1000 grit to start with.
the "foam" on that type is quite hard.
You obviously have never lapped a heatsink before. 400 grit is a good place to start.
god what a troll.You obviously have never lapped a heatsink before. 400 grit is a good place to start.
If that foam is not rock hard, you're going to roll the edge of the heat sink. You might get away with it if you use a really light touch, but I'd not use any such gadget.
How long should be spent, roughly, with each type of sand paper? I'm planning on doing with soon with my E6600's IHS, but i have no idea how long i should do it for. Does 50 strokes (50 forward, 50 back), turn 90 degrees, another 50 strokes, and so on until it's been rotated 360 degrees sound about right?
no need for counting strokes. the IHS is copper with a coating.. when you have full flat coverage, you will have no more silver, it will be apparent when you are done.
Oh right, OK. But, don't you remove all of the copper with the first set of sand paper; how do you tell how long to sand for with 800 and 1000 grit paper, for example, after removing the copper with 400 grit?
if you remove all the copper, you'll sand right through the IHS. You just sand until the surface is all copper colored, then you switch to a higher grit to smooth it out.
Right, but how long should be spent with the higher grit papers roughly?
so if u lap an ihs, how do u get all the copper dust off? how do you keep the copper/grit/water slurry from getting into the pins and messing everything up? do then dip the chip into alcohol to wash it up or do u need something like toluene?