Where to buy good sand paper for lapping?

[thenew3]

Where are you folks finding 600 grit sand paper?

Best I could find is 400 grit at the local home depot and walmart.

My alpha 8045 after lapping with 400grit paper is performing worse then it was berfore the attempt.

Now my Athlon XP 1700+ @ 2000+ (12.5x133 1.75v) is idling at 46 degrees!!! case temp is 27 degrees and room temp is 23 degrees.

there are 2 case fans (panaflo L1A's) in additional to the PS fan. the alpha also has a panaflo L1A on it.

Any suggestions where to find this good sand paper. Also any good direction on lapping?

thanks!

 

[BlvdKing]

I found 600 grit (wet sanding paper) at Home depot. I have heard of people getting even finer, but I don't know where.

 

[RalfHutter]

Lately I've been getting 1000 and 2000 grit 3m wet-or-dry paper from auto body places. They'll usually sell you a sheet or two for a nominal fee.

I used to get it from model shops. Car modelers use the real fine grits (I've used 12000 grit) for polishing out the paint jobs on their model cars. You can get pack of it that has a selection of various grits, usually from about 1000 to 12000 grit.

 

[BlvdKing]

That's good info. I always wondered were people were getting 1000+ grit wet sanding paper.



<< Lately I've been getting 1000 and 2000 grit 3m wet-or-dry paper from auto body places. They'll usually sell you a sheet or two for a nominal fee.

I used to get it from model shops. Car modelers use the real fine grits (I've used 12000 grit) for polishing out the paint jobs on their model cars. You can get pack of it that has a selection of various grits, usually from about 1000 to 12000 grit. >>

 

[conlan]

My local WalMart carries 1000, 1500 and 2000 grit 3M paper in the Automotive section.
EDIT.. Hetasink Lapping Article

 

[MisterNi]

Just go to your local Pep Boys or Autozone and look in the car detailing section. Just be sure to buy the package as the smaller 3M Imperial wet/dry is too small for lapping a heatsink.

 

[Richardito]

You really don't need sand paper. If you have a pretty good HS (with no deep holes in the base) you only need auto paint rubbing compound and mag wheel polishing compound. Use a terry cloth to apply first the rubbing compound and then the polishing compound. Of course, spend some time buffing the HS. It's a heck of a lot easier, faster and I achieved 2ºC cooler temps (@max temp) on all of the HS's that I've done this to. This is the identical drop in temperature achieved by the more involved sand paper method (and much cheaper, too). Heck, you probably have the stuff already on your garage...