this 3M rubbing stuff you swear by can you tell us more about it....i don't think out Australian hardware stores carry the same product but if i can explain it properly i might get lucky :DQuote:
Originally Posted by leviathan18
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this 3M rubbing stuff you swear by can you tell us more about it....i don't think out Australian hardware stores carry the same product but if i can explain it properly i might get lucky :DQuote:
Originally Posted by leviathan18
a pic is better than 1000 words
http://img486.imageshack.us/img486/2...4medium1fp.jpg
That's not really true. When I got my xp-I ran it for around 3 weeks as it came from the box with as5, roughly 350hrs of nothing but prime or occt. Then I took it out and polished it to 1500 grit followed by 000 steel wool. The temps dropped by 2* after another 3 weeks but that's only cause the room temp dropped as well.Quote:
Originally Posted by leviathan18
Rubbing compound leaves residue behind doesn't it, is it even abrasive enough to smooth out copper?
No it doesen't not if you clean it after using the rubbing compound. It is the equivalent to 5000 grit sandpaper.
is very abrasive and it doesnt leave residue i cleaned the whole thing with a small hydro jet
I also used grid paste to get rid of the scratches on the plate of my BT. Its the best stuff I used so far to get a mirror like finish. And there is nothing of it left, after cleaning is with some water. I used a white handkerchief to make sure that there is nothing of it left. If there was, it makes the cloth a little gray. After cleaning it with water I used a hair dryer to make sure that there is absolutely nothing left on the plate.
Usually I use that polish stuff to get rid of scratches on the paint of my car, but experiance has shown, that its also very good to lap heatsinks :)
hey man
you did a much better job than me but defiantely inspired me to do the same here........i don't know if it made any difference as i didn't have any data on my new dual core Opteron but it's doing OK
I lapped the base with 180, 360, 600, 1200 grit paper on granite kitchen bench...couldn't find that 3M stuff :p
i wasn't after perfection as you can see but something that will get rid of the major grooves that's all.....looks better now
http://img257.imageshack.us/img257/8987/dsc022070ad.jpghttp://img257.imageshack.us/img257/1572/dsc022089zf.jpg
http://img108.imageshack.us/img108/5639/dsc022107mm.jpghttp://img108.imageshack.us/img108/5625/dsc022110aj.jpg
http://img316.imageshack.us/img316/2235/dsc022121mi.jpghttp://img316.imageshack.us/img316/6451/dsc022132qh.jpg
http://img316.imageshack.us/img316/7300/dsc022156vt.jpghttp://img316.imageshack.us/img316/3016/dsc022164pv.jpg
http://img316.imageshack.us/img316/50/dsc022226ee.jpghttp://img316.imageshack.us/img316/7028/dsc022279nm.jpg
looks a lot better but if you use the 2000 grit you will have a better finish
:toast:
hehe our tightass Bunnings warehouse chain was hardly even stocking 1200 grit paper......so what's 2000 grit stuff like :slobber: hehehehheheheQuote:
Originally Posted by leviathan18
with the 2000 grit you will get rid of 80% of the scratches if you can find it buy it
lappers - do you try to lap by moving the whole cooler on a piece of sandpaper on the table or do you flip the cooler over and lap that way?
i've done it that way^^^^as per photos aboveQuote:
Originally Posted by freecableguy
I taped the sand paper to a sheet of plate glass from a 11"x14" picture frame and put the glass on a table. I use the glass plate to ensure a smooth lapping surface. I used 800 grit, 1000 grit, 1500 grit and finally 2000 grit sand paper from am automotive store. The same paper you would used for paint work. I wet sanded the entire time. After the 2000 grit, I didn't have any of the fine lapping paste, so I used toothpaste. Toothpaste is slightly abrasive, great for removing scratches from plastic lenses. Rinsed with water and the base was nice and flat to a straight edge and mirror shine smooth. About 2 hours worth of lapping.Quote:
do you try to lap by moving the whole cooler on a piece of sandpaper on the table
huh what lapping paste? i just use a dab of dishwater soap.
Hmm I went from 200 all way to 1000 (2000 wasnt anywhere in Homedeopt) and was kinda pissed at my results, I also used some dish liquid..
As for previous post about glass, it was once said to use a pain of glass or mirror to put the sand paper ontoi because of it having a perfect flat surface VS some plywood or say linoleum floor etc etc etc... That counter is a perfect flat im sure as well..
Temp decreae I cant really sai because I did so many mods in one day I dont know which one was good or bad for temps or anything for that matter
I lapped 90C
Removed IHS from 3800
Removed retention brackets from 90c and maufactured some bolt thru design using wall mirror mounbt brackets..
Did volt mod to ASrock mobo
and changed push pull config of fans
Load of 3800X2 @ 2.5 pre mod was 53 loaded
After barely ever saw 39... and lap was id say half as decent as even Dino's is, nothing compared to liviathan's work of art..
thats way cool man.
/me looking at my poor xp90c base
will try it out someday when i have the time too.
i may try this if i can get the energy to take this thing bac off my mobo lol
i moved the sand paper with a sand block is easier and fasterQuote:
Originally Posted by freecableguy
Now that explains why the mirror effect seems to have some distortion in it. The reflection of the camera, you took the pic with, is not 1:1, especially on the sides of the heatsink base.Quote:
Originally Posted by leviathan18
I bet the sanding block will never be as plane as a piece of glass and your hand motion will never be horizontal only, but always a bit vertical at the edges, too.
That said, I'm sorry to say, but your heatsink base may look very nice now, but it'll never be as good as it could've been when moving the cooler itself on a fixed piece of sandpaper on a glass-plate.:(
But hey, if it still improved your temps, that's OK. I just wanted to point out that next time you should do it like explained above, in order to get even better results.
i find that lapping past 600 grit is pretty useless...
like fractions of a c...
still when i do it, i go up to 1000 grit...
the stock finish isnt so bad though, if you make more then a C from all that work than congrats to you.