What should I buy to lap my orb(s)?

Yodums · 10-27-01, 07:32 PM

OK Tomorrow morning I'm going to run to a local store buy some stuff to lap..

But I'm not positive what to buy..

AS far as I'm concerned I'm suppose to start with a 200 Grit Sand Paper....

How many sandpapers should I buy? And what do I buy to finish off the job with a nice clean reflection and stuff not leaving it dull..
I'm really concerned since I've been told the way orb's been made the epoxy was conductive and fried my GF 2 MX! I dont want the same thing to happen to my P3!!

funnyperson1 · 10-27-01, 09:09 PM

DO NOT USE EPOXY ON YOUR CPU!!! that is not a good idea at all....epoxy is only for sticking stuff together ie the heatsink on a video card, a cpu has a clip and normal thermal -paste is not very conductive, still to be sure you must use a thin layer of thermal paste9this will also mprove cooling)......get 200,400,600 grit sandpaper and you should be fine, if you want it shiny also get some 1500 i have read however that shiny heatsinks perform worse(im not positive though).......also get a 3 sheets of 200grit and 2 sheets of 400 and 1 600 you should be fine.....

batboy · 10-27-01, 10:49 PM

I hate to contradict Funny, but I've lapped several CPU coolers and one Blue Orb. I've never used 200 grit and even if you do, you sure don't need 3 sheets of it. That 200 grit is too coarse in my opinion and will leave scratches it you're not real careful. Go to a good auto parts store where they'll sell you individual sheets of wet/dry sand paper. Ask for one sheet each of 400, 600, 800, 1000 and 1200. If you plan on doing more heatsinks than one or two, maybe get two sheets of each. Alternatively you can substitute the 1200 for 1500 if you want but I've found that 1200 is fine enough. Personally, I think you can probably stop at 1000 grit. For the final polish, if you truly desire a shiny mirror surface, use a bit of metal polish (Blue Magic works great, is fairly cheap, found in the auto section of most department stores, plus I've used it to polish aluminum car wheels, plastic flashlight lens, antique brass, etc, etc.).

[OC]_SR20DE · 10-28-01, 01:01 AM

also just for curiosity, if intend to lap the HS, how long do u do it?.. cauze you don't want to lap it too much or too long of time. u don't want the HS surface to be slightly warped. u want to insure that the surface of the HS is totally flat.

RedDeathDrinker · 10-28-01, 03:02 AM

#1 - Use Wet and Dry, not sandpaper. And use it wet.

#2 - You want it flat. So put the sheet on a hard flat surface. The flatter and harder the better (chunk of 18mm thick MDF is good)

#3 - Use plenty of water. This helps stop scratches.

#4 - Start at 600 grit, then finish with 1200 or 1600. Wet.

#5 - Use metal polish for a final shine.

Shadow ÒÓ · 10-28-01, 03:58 AM

Posting the same question in more than one topic is not necessary.

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10-27-01, 07:32 PM	Thread Starter #1
Yodums Senior Member Join Date: Oct 2001 Location: Ottawa, Canada	What should I buy to lap my orb(s)? OK Tomorrow morning I'm going to run to a local store buy some stuff to lap.. But I'm not positive what to buy.. AS far as I'm concerned I'm suppose to start with a 200 Grit Sand Paper.... How many sandpapers should I buy? And what do I buy to finish off the job with a nice clean reflection and stuff not leaving it dull.. I'm really concerned since I've been told the way orb's been made the epoxy was conductive and fried my GF 2 MX! I dont want the same thing to happen to my P3!! __________________ Peter Gibbons: Let me ask you something. When you come in on Monday, and you're not feelin' real well, does anyone ever say to you, 'Sounds like someone has a case of the Mondays'? Lawrence: No. No, man. ****, no, man. I believe you'd get your ass kicked sayin' something like that, man.

10-28-01, 03:58 AM	#6
Shadow ÒÓ Mod in Hiding Join Date: Dec 2000 Location: Pensacola, Florida USA	Posting the same question in more than one topic is not necessary. Click __________________ The problem with America is stupidity. I'm not saying there should be a capital punishment for stupidity, but why don't we just take the safety labels off of everything and let the problem solve itself?

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What should I buy to lap my orb(s)?

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10-27-01, 09:09 PM	#2
funnyperson1 Senior Member Join Date: Jun 2001 Location: Northern VA	DO NOT USE EPOXY ON YOUR CPU!!! that is not a good idea at all....epoxy is only for sticking stuff together ie the heatsink on a video card, a cpu has a clip and normal thermal -paste is not very conductive, still to be sure you must use a thin layer of thermal paste9this will also mprove cooling)......get 200,400,600 grit sandpaper and you should be fine, if you want it shiny also get some 1500 i have read however that shiny heatsinks perform worse(im not positive though).......also get a 3 sheets of 200grit and 2 sheets of 400 and 1 600 you should be fine..... __________________ "Strong with the fold this boy is, fold you must"-NASSoccer its a shame you cant ban people for being ignorant fanboys.... My Heatware [Gigabyte MA790X-UDP4][PHII 940BE][Thermalright Ultra90][2x2GB OCZ Reaper HPC][Palit HD4850][Enhance 5150GH][Windows 7,Ubuntu 12.04]

10-27-01, 10:49 PM	#3
batboy Senior Moment Join Date: Jan 2001 Location: Kansas, USA	I hate to contradict Funny, but I've lapped several CPU coolers and one Blue Orb. I've never used 200 grit and even if you do, you sure don't need 3 sheets of it. That 200 grit is too coarse in my opinion and will leave scratches it you're not real careful. Go to a good auto parts store where they'll sell you individual sheets of wet/dry sand paper. Ask for one sheet each of 400, 600, 800, 1000 and 1200. If you plan on doing more heatsinks than one or two, maybe get two sheets of each. Alternatively you can substitute the 1200 for 1500 if you want but I've found that 1200 is fine enough. Personally, I think you can probably stop at 1000 grit. For the final polish, if you truly desire a shiny mirror surface, use a bit of metal polish (Blue Magic works great, is fairly cheap, found in the auto section of most department stores, plus I've used it to polish aluminum car wheels, plastic flashlight lens, antique brass, etc, etc.). __________________ 2600K, Asus P8P67 Deluxe, 2X2GB G.Skill Pi PC3-2133, PC & Cooling 750W watercooled: Eheim 1048 pump, Swiftech Apogee GTX and 2X120mm rad FS020 case, OCZ SSD, Sapphire HD 6950, Acer X241W 24" widescreen Last edited by batboy; 10-27-01 at 10:56 PM.

10-28-01, 01:01 AM	#4
[OC]_SR20DE Senior Member Join Date: Dec 2000 Location: Ummm..	also just for curiosity, if intend to lap the HS, how long do u do it?.. cauze you don't want to lap it too much or too long of time. u don't want the HS surface to be slightly warped. u want to insure that the surface of the HS is totally flat.

10-28-01, 03:02 AM	#5
RedDeathDrinker Senior Aircraftsman IRL Join Date: Jul 2001 Location: Scotland - And don't you forget it!	#1 - Use Wet and Dry, not sandpaper. And use it wet. #2 - You want it flat. So put the sheet on a hard flat surface. The flatter and harder the better (chunk of 18mm thick MDF is good) #3 - Use plenty of water. This helps stop scratches. #4 - Start at 600 grit, then finish with 1200 or 1600. Wet. #5 - Use metal polish for a final shine. __________________ We are stuck with technology when what we really want is just stuff that works. How do you recognise something that is still technology? A good clue is if it comes with a manual...