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Where to find 1200/1600 grit sandpaper?

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Nagorak

Senior Member
Joined
Dec 19, 2000
I know this might sound like kind of a dumb question, but can any of you guys tell me where I might be able to find ultra-ultra-fine sandpaper? Homedepot only has up to around 600 or so, but I see people on this forum all the time talking about how they lapped their heatsinks up to 1600 grit.

Any help would be greatly appreciated, thanks.
 

AKDUDE

Senior Member
Joined
Feb 13, 2001
I get mine at Ace Hardware. Also Auto parts stores have it in the paint section.
AKDUDE
 

Phil

Senior Member
Joined
Jan 13, 2001
Location
Bolton, UK
auto parts stores are the best for this, I couldn't find anything above 600 in any of the diy stores I tryed, the owners even said they had never heard of grits above 800, but I tryed the nearest automotive chain store and they had loads of the stuff
 

Hoot

Inactive Moderator
Joined
Feb 13, 2001
Location
Twin Cities
Are you making a homemade telescope lense? 800, 600, even 400 is all the finer you need to go. There is a point where diminishing returns enter in. Lapping should not be a costly endeavor. Depending upon the state of the heatsink base, I use 240, 320 and 400. That's for a really bad one. Bear in mind that the abrasiveness goes down as you use the paper. Here's the trick. When you have it a smooth as you think is will go with the 400, flip over the sheet and give it a few minutes with the paper backing. That will shine it up real nice. I use Tri-Mite Wet-or-dry, Silicon Carbide paper. I believe 3M sells a variety pack with 2 of each sheet,or something like that.

Hoot