was wanting to try out lapping this weekend. so i headed down to midvalley ace hardware to look for the sand papers mentioned in this thread but could only get the 600 grit
anyway, nice guide. wanna ask if its possible to lap the thermalright HR-05 or the ultra-120?anyone with experience lapping them?
and also, i read from another guide that its not advised to lift the heatsink when lapping to check on the condition. is it true? and how do we lift up the heatsink after the sandpaper needs to be changed to a higher grit?

thats not true...u can lift the heatsink anythime u want...
um i wouldnt recomend u lap the ultra 120, but the hr-05 is preety straightfoward lapping, its flat base..... ultra 120 has a base similar to the hr-01, difficult to lap as it has overhang edges on the side.....

i c. thanks for the info then guess i'll try and lap the HR05.
its hard to lap the ultra 120 but its still lap-able right? anything to take note of when lapping the ultra-120?
the only prob right now is getting the sand papers...

its very very difficult...
when u look at the base of the ultra 120 u will realise wat i mean....its almost unlappable... dun bother if u were me.... u wont get flat base without specialised machinery



This post has been edited by lolhalol: Apr 30 2007, 11:02 AM

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Added on April 30, 2007, 11:02 amguys look out for lappijng guide v2, using a hr-05 .... includes how to clean the alu fins from oxidation.... now experimenting with different liquids or the cleanning....

hehe...where is the url ?

clean alu fins??? lol....tomato sauce? vinegar??? haha

not yet lah...just wanted to give a heads up on it.... now exoperimenting with the liquids, when i got a liquid that works and its easy to find will start wrriting the article, coz i dun know wats the long terms effects of summerging the whole thing into a corrosive liquid, will the heatpipe be affected and all taht....

This thread not yet dead yet.. and u wanted to start v2. you can always pm me to update the front page

This post has been edited by neoxz: May 6 2007, 09:12 PM

no lah..i will post here dun worry.... im strill experimenting with the liquids...dam fun..feel like mad sceintists...lolz

Wat chemicals are you using?

right now, distlieed water, coke, listerine, oral rinnse( some chinese brand) , tootpaste, olive oil, lubricant , cooking oil, wd 40, greese , and techincaly anythiing i can find at home, except the lubrican, vinegar, tomato chili soauce.... i bought from 7eleven...lolz , dun worry im trying first on an ol hsf....

This post has been edited by lolhalol: May 7 2007, 11:12 AM

Your trying those things as water replacement when u lap ur heatsink?

yeah,.... also to c how to clean the oxidation on alu fins.....

U got try baking soda?

nope.... its no liquid form so didnt think of it.... might try... but how to apply?

It should work to a small extent. Baking soda contains some sodium hidroxide, but I doubt it will have much effect (have to try fisrt though). Mix with water to use.

FYI, the following can be used to clean the following materials. Using a toothbrush to brush between the fins works well.

Aluminium - Caustic soda@Sodium hidroxide (wear gloves!) I'm still looking for a source other than chemical shops, I'm pretty sure there are some. Surprise! Aluminium doesn't reach with most acids as well as it does to alkalis, and if you do get an acid stong enough the result is pretty dangerous..

Copper - most weak acids work, tomato sauce is my favourite. Easiest metal to get to shine. Might need a slight abrasive agent like gif to get off the hazy residue of the acid though.

Chome - still trying to figure this one out. Haven't had any luck cleaning thermalright heatsinks, which are chromed.

This post has been edited by lohwenli: May 7 2007, 03:40 PM

they are actually nicle plated..but they are very similar... i mean chrome and nickle... almost the same process.

I think you're right, my mistake. Most of the transition metals (chemistry wise) are pretty hard to react with most chemicals, so we're just back to square one. From my experience its hard to clean those metals without abrasive cleaners.

yea..so far half of the liquids i mentioned have failed....lolz....still no harm trying m, and wherers the fun in not trying....lolz....