> "Kenneth" <kdw### [at] gmailcom> wrote:
> 
>> Hmm, sounds a bit like 'Monty Python' science. Do I cast the Runes while doing
>> so, to see if the auspices are good?
> 
> It's likely the hard drives are Made In China (TM), so you need to use the I
> Ching.
> 
>> I guess that's basically for a drive that's overheating(?)
> 
> No. I'm not sure _exactly_ why, but empirically it seems to work > 0% of the
> time for people that Santa has on his Nice list.
> I hate speculate, but, oh, well, if you insist...
> 
> I think it has something to do with the metal contracting in the cold, and
> freeing up parts that are binding (bearings) or touching when they're not
> supposed to be (platters & read/write heads}
> 

Not overheating per see, but often a thermal correction problem.
When a drive get warm, it expand, making it gain in radius. This cause 
the tracks to shift.
The frimware is designed to compensate for that by adjusting the heads 
placement according to the current temperature of the drive. It can 
happen that the thermal sensor could fail, or the logic could get 
corrupted, preventing the correction from taking place.
If you coll it down enough, then, no thermal correction is needed and 
you can access the data, untill the drive get warm again.

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"Bald Eagle" <cre### [at] netscapenet> wrote:
> "Kenneth" <kdw### [at] gmailcom> wrote:
>
>
> Hmm.  I take _everything_ apart, and I'd say that 90% of the time it's bad
> contacts.

Taking things apart is my usual modus operandi as well; but a hard drive seems
like a Rolex watch to me-- finicky, full of tiny mysterious precision parts,
etc. (Not that I own a Rolex!) But now that you mention it: The HD data-recovery
companies I've researched all say this on their websites, in one form or
another: "WE have a dust-free *clean room* for fixing your HD. That's better
than taking it apart yourself." Well, my first thought was: "People actually
take apart their own HDs themselves and fix them??!" I've never been bold enough
to attempt it... but the thought intriques me. (I do understand the 'dust-free
environment' warning, but maybe its been a bit overhyped? After all, those
companies are in the business of selling a service-- while making sure we are
SCARED to attempt it on our own workbenches.)
>
> ....and the
> > pumps...
>
> I'm not sure where you're going with that, but it sounds NSFW....
>
No, not that kind of pumps, the other kind of pumps! REFRIGERATION pumps! ;-P

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On 26-9-2017 9:11, Thomas de Groot wrote:
> ..and to support my case: I have been doing some little sculpture in 
> between.
> 

... and here is the latest version; using the Norbert Kern / James 
Holsenback brass texture for the clothing.

-- 
Thomas

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On 27-9-2017 9:45, Thomas de Groot wrote:
> On 26-9-2017 9:11, Thomas de Groot wrote:
>> ..and to support my case: I have been doing some little sculpture in 
>> between.
>>
> 
> ... and here is the latest version; using the Norbert Kern / James 
> Holsenback brass texture for the clothing.
> 

Well, should have attached the image :-)

-- 
Thomas

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Attachments:
Download 'ep_proximity_test.jpg' (94 KB)

Preview of image 'ep_proximity_test.jpg'

On 27/09/2017 08:46, Thomas de Groot wrote:
> On 27-9-2017 9:45, Thomas de Groot wrote:
>> On 26-9-2017 9:11, Thomas de Groot wrote:
>>> ..and to support my case: I have been doing some little sculpture in 
>>> between.
>>>
>>
>> ... and here is the latest version; using the Norbert Kern / James 
>> Holsenback brass texture for the clothing.
>>
> 
> Well, should have attached the image :-)
> 

I think you can say that it worked.

Very nice. :-)

-- 

Regards
     Stephen

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On 27-9-2017 9:46, Thomas de Groot wrote:
> On 27-9-2017 9:45, Thomas de Groot wrote:
>> On 26-9-2017 9:11, Thomas de Groot wrote:
>>> ..and to support my case: I have been doing some little sculpture in 
>>> between.
>>>
>>
>> ... and here is the latest version; using the Norbert Kern / James 
>> Holsenback brass texture for the clothing.
>>
> 
> Well, should have attached the image :-)
> 

... of course, this texture demands a light probe ;-)

-- 
Thomas

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Attachments:
Download 'ep_proximity_test.jpg' (112 KB)

Preview of image 'ep_proximity_test.jpg'

Thomas de Groot <tho### [at] degrootorg> wrote:
> On 27-9-2017 9:46, Thomas de Groot wrote:
> > On 27-9-2017 9:45, Thomas de Groot wrote:
> >> On 26-9-2017 9:11, Thomas de Groot wrote:
> >>> ..and to support my case: I have been doing some little sculpture in
> >>> between.
> >>>
> >>
> >> ... and here is the latest version; using the Norbert Kern / James
> >> Holsenback brass texture for the clothing.
> >>
> >
> > Well, should have attached the image :-)
> >
>
> ... of course, this texture demands a light probe ;-)
>
> --
> Thomas

Hi, it looks like a good basis, but reflections appear slightly too strong/
crisp/ homogenous:

Here are three workarounds maybe some already used:
*roughness in uberpov reflection block
*use conserve_energy / albedo + fresnel in reflection block with an explicit ior
*use the proximity pattern as a texture map for the "finish map" trick
(http://www.povray.org/documentation/view/3.6.2/82/) to modulate reflections and
make less of them where metal is corroded/oxidized

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Thomas de Groot <tho### [at] degrootorg> wrote:
[...] Sorry for this off topic comment, but I also like how you wrote
"persistence of vision" instead of POV-Ray which makes it more modern
("Ray(tracer)" sounds so nineties); and also more "marketable" to french
speaking people!

I which I would have dared naming it as fully when first setting up the Blender
exporter's repository...

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On 29-9-2017 10:56, Mr wrote:
> Thomas de Groot <tho### [at] degrootorg> wrote:
> [...] Sorry for this off topic comment, but I also like how you wrote
> "persistence of vision" instead of POV-Ray which makes it more modern
> ("Ray(tracer)" sounds so nineties); and also more "marketable" to french
> speaking people!
> 
> I which I would have dared naming it as fully when first setting up the Blender
> exporter's repository...
> 

Nothing to do with me ;-) Is an image_map which came with Edouard Poor's 
set of files almost ten years ago.

-- 
Thomas

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On 29-9-2017 10:45, Mr wrote:
> Thomas de Groot <tho### [at] degrootorg> wrote:
>> On 27-9-2017 9:46, Thomas de Groot wrote:
>>> On 27-9-2017 9:45, Thomas de Groot wrote:
>>>> On 26-9-2017 9:11, Thomas de Groot wrote:
>>>>> ..and to support my case: I have been doing some little sculpture in
>>>>> between.
>>>>>
>>>>
>>>> ... and here is the latest version; using the Norbert Kern / James
>>>> Holsenback brass texture for the clothing.
>>>>
>>>
>>> Well, should have attached the image :-)
>>>
>>
>> ... of course, this texture demands a light probe ;-)
>>
>> --
>> Thomas
> 
> Hi, it looks like a good basis, but reflections appear slightly too strong/
> crisp/ homogenous:
> 
> Here are three workarounds maybe some already used:
> *roughness in uberpov reflection block

Yes, something to try indeed.

> *use conserve_energy / albedo + fresnel in reflection block with an explicit ior

I used the finish statement as given by Norbert Kern in his brass 
texture. Can be improved of course ;-)

> *use the proximity pattern as a texture map for the "finish map" trick
> (http://www.povray.org/documentation/view/3.6.2/82/) to modulate reflections and
> make less of them where metal is corroded/oxidized

As far as I know, it does that already.

-- 
Thomas

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