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Data recovery and disk repair questions and discussions related to old-fashioned SATA, SAS, SCSI, IDE, MFM hard drives - any type of storage device that has moving parts
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Platter cleaning

December 21st, 2019, 13:14

Hello, I saw today a video (https://www.youtube.com/watch?v=afUdR6c8ikY) which blow my mind a bit and there is all done what i where thinking you can not do...

1) How he can extract all 3 platters and rotate them around - I was thinking they have to stay precisely aligned to each other?!
2) He just scrub with the broken head-assambly some particles off - in my opinion it looks quite rough to me.

You can really handle platters that way?

The machine looks like the APEX Platter Extractor but i where thinking that can be used only for drives with one platter...

Re: Platter cleaning

December 21st, 2019, 14:43

maddin wrote:How he can extract all 3 platters and rotate them around - I was thinking they have to stay precisely aligned to each other?!
You can see a basic explanation here: Embedded Servo. You can expand your search from there.

Re: Platter cleaning

December 21st, 2019, 15:14

I started a log of platter transplants without alignment here
- https://www.recoveryforce.com/forums/vi ... .php?t=565

Re: Platter cleaning

December 21st, 2019, 15:29

maddin wrote:Hello, I saw today a video (https://www.youtube.com/watch?v=afUdR6c8ikY) which blow my mind a bit and there is all done what i where thinking you can not do...

1) How he can extract all 3 platters and rotate them around - I was thinking they have to stay precisely aligned to each other?!

What blows my mind is the fact that "alignment" is necessary at all. An embedded servo by definition is self-aligning. AISI, it's just another case where the engineers have screwed up.

Re: Platter cleaning

December 21st, 2019, 16:33

fzabkar wrote:What blows my mind is the fact that "alignment" is necessary at all. An embedded servo by definition is self-aligning. AISI, it's just another case where the engineers have screwed up.


... I see - looks like for some drives the alignment is not important but how to check if it is or not? Is there a complete list or do I need to find it out on my own?

Apropos extracting platters - I found that tool: https://www.youtube.com/watch?v=w3bt5yNt3xY
Does someone know that one and is it useable?

Are there some Books or Videocourses which you could recommand me? I found one from Scott Moulton (myharddrivedied.com) but if the videos are the same as on youtube i am affraid I will not learn much...

Re: Platter cleaning

December 26th, 2019, 10:38

maddin wrote:Hello, I saw today a video (https://www.youtube.com/watch?v=afUdR6c8ikY) which blow my mind a bit and there is all done what i where thinking you can not do...

1) How he can extract all 3 platters and rotate them around - I was thinking they have to stay precisely aligned to each other?!
2) He just scrub with the broken head-assambly some particles off - in my opinion it looks quite rough to me.

You can really handle platters that way?

The machine looks like the APEX Platter Extractor but i where thinking that can be used only for drives with one platter...


Maddin ,
I Would Like To Answer Your question 1 by 1

1 : Platter Alignment is req in some drive and not in others ,Also you can work about firmware to solve alignment issue if you know how
2 :I did not like what erkin did to remove the stuck part ,A better approach would have been you use a fishing line or nylon thread and take the same apart .I was wondering how the poor apextoollab tool survived the ordeal
3 : To Pick And Place Method You Can Use Tool From Apextoollab , Chinese Tools That Use Dual Sided Tape on a Steel Tool To Remove Platters or Tape Method .

PS : I did a fantastic case today what i worked on for three days And involved much more work then you see in the video .Result success

Re: Platter cleaning

December 26th, 2019, 10:40

maddin wrote:
fzabkar wrote:What blows my mind is the fact that "alignment" is necessary at all. An embedded servo by definition is self-aligning. AISI, it's just another case where the engineers have screwed up.


... I see - looks like for some drives the alignment is not important but how to check if it is or not? Is there a complete list or do I need to find it out on my own?

Apropos extracting platters - I found that tool: https://www.youtube.com/watch?v=w3bt5yNt3xY
Does someone know that one and is it useable?

Are there some Books or Videocourses which you could recommand me? I found one from Scott Moulton (myharddrivedied.com) but if the videos are the same as on youtube i am affraid I will not learn much...


Well,
This Was The Chinese Tool i Was Talking About .The Platter Stand Is #@$@#%$ As WE Cannot Secure it Like We Can To HDDsurgery Stand And Hence When You Like To Rotate Platter It Will Fall Down

Re: Platter cleaning

December 26th, 2019, 10:49

lcoughey wrote:I started a log of platter transplants without alignment here
- https://www.recoveryforce.com/forums/vi ... .php?t=565


Luke ,
I will Add Some Details Soon To Your List i Am Working Day And Night On These Damn Platter Cases These Days

Re: Platter cleaning

December 30th, 2019, 3:38

Amarbir[CDR-Labs] wrote:Maddin ,
I Would Like To Answer Your question 1 by 1

... thanks a lot!
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