interesting video on "diy" thermal epoxy

  • Thread starter Lasse Langwadt Christense
  • Start date
On 2/27/2020 4:22 PM, Lasse Langwadt Christensen wrote:
https://youtu.be/8MOTMq9g8Nk

I've watched a bunch of this guys videos, he really does a fine job.
Has a wide range of topics. Mr. Zen with his calm voice and easy style.
Mikek
 
Good video, he is an awesome presenter and very knowledgeable 😊
 
On Thursday, February 27, 2020 at 6:57:06 PM UTC-5, Klaus Kragelund wrote:
> Good video, he is an awesome presenter and very knowledgeable 😊

It was fun. Nice setup! I wasn't impressed with his
thermal conductivity measurement. I guess I'd like to
see two slabs of metal, one cooled and one heated.
and then thermistors stuck in each block to measure
temperatures. Oh and some controlled volume of epoxy between,
so one could actually get numbers for his stuff, arctic silver,
and JB weld (or whatever the other epoxy is) That would be useful
and more convincing. You'd think he'd have made such a gimzo...
How else did he find his mixture to be so good?

George H.
 
fredag den 28. februar 2020 kl. 02.15.23 UTC+1 skrev George Herold:
On Thursday, February 27, 2020 at 6:57:06 PM UTC-5, Klaus Kragelund wrote:
Good video, he is an awesome presenter and very knowledgeable 😊

It was fun. Nice setup! I wasn't impressed with his
thermal conductivity measurement. I guess I'd like to
see two slabs of metal, one cooled and one heated.
and then thermistors stuck in each block to measure
temperatures. Oh and some controlled volume of epoxy between,
so one could actually get numbers for his stuff, arctic silver,
and JB weld (or whatever the other epoxy is) That would be useful
and more convincing. You'd think he'd have made such a gimzo...
How else did he find his mixture to be so good?

agree that measurement setup was a bit sketchy, though apart from the
application of each compound, which we didn't see, it was the same for
all of them
 
On Thu, 27 Feb 2020 17:15:17 -0800 (PST), George Herold
<ggherold@gmail.com> wrote:

On Thursday, February 27, 2020 at 6:57:06 PM UTC-5, Klaus Kragelund wrote:
Good video, he is an awesome presenter and very knowledgeable ?

It was fun. Nice setup! I wasn't impressed with his
thermal conductivity measurement. I guess I'd like to
see two slabs of metal, one cooled and one heated.
and then thermistors stuck in each block to measure
temperatures. Oh and some controlled volume of epoxy between,
so one could actually get numbers for his stuff, arctic silver,
and JB weld (or whatever the other epoxy is) That would be useful
and more convincing. You'd think he'd have made such a gimzo...
How else did he find his mixture to be so good?

George H.

Right, the cheap IR temp meter snooping the top of that cheap
sand-filled resistor is horrible. The resistors are hardly flat
either.

This is measuring a slab of aluminum nitride:

https://www.dropbox.com/s/k2b28efuuaqkgle/DSC02176.JPG?dl=0

The copper post has a thermocouple embedded near the bottom. There's
another thermocouple on the aluminum block.



--

John Larkin Highland Technology, Inc

The cork popped merrily, and Lord Peter rose to his feet.
"Bunter", he said, "I give you a toast. The triumph of Instinct over Reason"
 
On Thu, 27 Feb 2020 14:22:54 -0800 (PST), Lasse Langwadt Christensen
<langwadt@fonz.dk> wrote:

https://youtu.be/8MOTMq9g8Nk

Since his measurements are multilayered nonsense, and he's getting the
results that he wants, he's probably cheating.



--

John Larkin Highland Technology, Inc

The cork popped merrily, and Lord Peter rose to his feet.
"Bunter", he said, "I give you a toast. The triumph of Instinct over Reason"
 
George Herold <ggherold@gmail.com> wrote in
news:801bef82-b541-455d-a329-72574be42217@googlegroups.com:

On Thursday, February 27, 2020 at 6:57:06 PM UTC-5, Klaus
Kragelund wrote:
Good video, he is an awesome presenter and very knowledgeable đŸ˜
Š

It was fun. Nice setup! I wasn't impressed with his
thermal conductivity measurement. I guess I'd like to
see two slabs of metal, one cooled and one heated.
and then thermistors stuck in each block to measure
temperatures. Oh and some controlled volume of epoxy between,
so one could actually get numbers for his stuff, arctic silver,
and JB weld (or whatever the other epoxy is) That would be useful
and more convincing. You'd think he'd have made such a gimzo...
How else did he find his mixture to be so good?

George H.

We had stycast and it was bad, so we looked and they have a thermal
version. It is real grainy and is blue in color. Both fail because
stycast has bad thermal expansion properties and breaks SMD parts.
It is just too brittle too.

We did find an epoxy we liked and in talking to the binding guys,
we found out that we could add silica powder or tiny spindly shards
of it to our matrix and get better thermal performance. This is
true.

But I saw a video on IC chips and how they make the 5 micron
diamond cutting wheels they dice up chip dies with. They use diamond
powder. So I guess that powder would likely enhance conduction
better than the silica powder. It looked as fine as cinnamon.
 
On 2020/02/27 8:43 p.m., jlarkin@highlandsniptechnology.com wrote:
On Thu, 27 Feb 2020 14:22:54 -0800 (PST), Lasse Langwadt Christensen
langwadt@fonz.dk> wrote:

https://youtu.be/8MOTMq9g8Nk


Since his measurements are multilayered nonsense, and he's getting the
results that he wants, he's probably cheating.

Isn't his epoxy ending up as 'store bought'? I mean he sells it through
his online store.

Not exactly rigorous comparison testing, I would expect multiple
examples of each, and some proper double blind procedures.

Not science.

He looks like just another snake-oil salesman.

John
 
On Fri, 28 Feb 2020 08:02:44 -0800, John Robertson <spam@flippers.com>
wrote:

On 2020/02/27 8:43 p.m., jlarkin@highlandsniptechnology.com wrote:
On Thu, 27 Feb 2020 14:22:54 -0800 (PST), Lasse Langwadt Christensen
langwadt@fonz.dk> wrote:

https://youtu.be/8MOTMq9g8Nk


Since his measurements are multilayered nonsense, and he's getting the
results that he wants, he's probably cheating.




Isn't his epoxy ending up as 'store bought'? I mean he sells it through
his online store.

Not exactly rigorous comparison testing, I would expect multiple
examples of each, and some proper double blind procedures.

And some control over application area and thickness. And some decent
temperature instrumentation. The laser dots on those cheap IR
thermometers are illusions of aiming precision.

Not science.

He looks like just another snake-oil salesman.

John

Yes. He has every incentive for his pompous measurements to increase
sales.

Reminds me of the N-rays thing. One needs to be careful when making
measurements, to not see what one wants to see. He could well be
cheating unconsciously.



--

John Larkin Highland Technology, Inc

The cork popped merrily, and Lord Peter rose to his feet.
"Bunter", he said, "I give you a toast. The triumph of Instinct over Reason"
 
jlarkin@highlandsniptechnology.com wrote in
news:ljhi5fh8tuo72fjs4ins1iqrf2ohnjt7or@4ax.com:

On Fri, 28 Feb 2020 08:02:44 -0800, John Robertson
spam@flippers.com> wrote:

On 2020/02/27 8:43 p.m., jlarkin@highlandsniptechnology.com wrote:
On Thu, 27 Feb 2020 14:22:54 -0800 (PST), Lasse Langwadt
Christensen <langwadt@fonz.dk> wrote:

https://youtu.be/8MOTMq9g8Nk


Since his measurements are multilayered nonsense, and he's
getting the results that he wants, he's probably cheating.




Isn't his epoxy ending up as 'store bought'? I mean he sells it
through his online store.

Not exactly rigorous comparison testing, I would expect multiple
examples of each, and some proper double blind procedures.

And some control over application area and thickness. And some
decent temperature instrumentation. The laser dots on those cheap
IR thermometers are illusions of aiming precision.


Not science.

He looks like just another snake-oil salesman.

John

Yes. He has every incentive for his pompous measurements to
increase sales.

Reminds me of the N-rays thing. One needs to be careful when
making measurements, to not see what one wants to see. He could
well be cheating unconsciously.

One does not need to optically flat polish a 4 inch sink plate face
to place a 0.5" x 1.5" resistor... EVER!

And proper testing would prove that fact. The difference being
very close to nil. Certainly not worth the labor to gain a
negligible change. And one certainly does not need to go past 600
grit and even that is pushing it on claims of gains.
 
amdx wrote:
On 2/27/2020 4:22 PM, Lasse Langwadt Christensen wrote:
https://youtu.be/8MOTMq9g8Nk


I've watched a bunch of this guys videos, he really does a fine job.
Has a wide range of topics. Mr. Zen with his calm voice and easy
style. Mikek

"Applied science" is neat too.

https://www.youtube.com/watch?v=rpHYBz7ToII
 
Tom Del Rosso <fizzbintuesday@that-google-mail-domain.com> wrote:
amdx wrote:
On 2/27/2020 4:22 PM, Lasse Langwadt Christensen wrote:
https://youtu.be/8MOTMq9g8Nk


I've watched a bunch of this guys videos, he really does a fine job.
Has a wide range of topics. Mr. Zen with his calm voice and easy
style. Mikek

"Applied science" is neat too.

https://www.youtube.com/watch?v=rpHYBz7ToII

This robot is too boring to watch. I've seen more entertainment in MSDSs.
 
Cydrome Leader <presence@MUNGEpanix.com> wrote in
news:r4jes1$s1m$2@reader2.panix.com:

Tom Del Rosso <fizzbintuesday@that-google-mail-domain.com> wrote:
amdx wrote:
On 2/27/2020 4:22 PM, Lasse Langwadt Christensen wrote:
https://youtu.be/8MOTMq9g8Nk


I've watched a bunch of this guys videos, he really does a fine
job.
Has a wide range of topics. Mr. Zen with his calm voice and easy
style. Mikek

"Applied science" is neat too.

https://www.youtube.com/watch?v=rpHYBz7ToII

This robot is too boring to watch. I've seen more entertainment in
MSDSs.

The B movie link I posted the other day is more interesting... and
funny.

<https://www.youtube.com/watch?v=VHxHP0yaXRo>

It also has a robot.
 
DecadentLinuxUserNumeroUno@decadence.org wrote:
Cydrome Leader <presence@MUNGEpanix.com> wrote in
news:r4jes1$s1m$2@reader2.panix.com:

Tom Del Rosso <fizzbintuesday@that-google-mail-domain.com> wrote:
amdx wrote:
On 2/27/2020 4:22 PM, Lasse Langwadt Christensen wrote:
https://youtu.be/8MOTMq9g8Nk


I've watched a bunch of this guys videos, he really does a fine
job.
Has a wide range of topics. Mr. Zen with his calm voice and easy
style. Mikek

"Applied science" is neat too.

https://www.youtube.com/watch?v=rpHYBz7ToII

This robot is too boring to watch. I've seen more entertainment in
MSDSs.


The B movie link I posted the other day is more interesting... and
funny.

https://www.youtube.com/watch?v=VHxHP0yaXRo

It also has a robot.

Ha, the video game scene from the 1950s is pretty good. Tobor is clearly
more fun than the applied boredom robot host. Text to speech synthesizers
sound more human than that guy.
 
Cydrome Leader <presence@MUNGEpanix.com> wrote in
news:r4jn4m$mia$1@reader2.panix.com:

DecadentLinuxUserNumeroUno@decadence.org wrote:
Cydrome Leader <presence@MUNGEpanix.com> wrote in
news:r4jes1$s1m$2@reader2.panix.com:

Tom Del Rosso <fizzbintuesday@that-google-mail-domain.com
wrote:
amdx wrote:
On 2/27/2020 4:22 PM, Lasse Langwadt Christensen wrote:
https://youtu.be/8MOTMq9g8Nk


I've watched a bunch of this guys videos, he really does a
fine job.
Has a wide range of topics. Mr. Zen with his calm voice and
easy
style. Mikek

"Applied science" is neat too.

https://www.youtube.com/watch?v=rpHYBz7ToII

This robot is too boring to watch. I've seen more entertainment
in MSDSs.


The B movie link I posted the other day is more interesting...
and
funny.

https://www.youtube.com/watch?v=VHxHP0yaXRo

It also has a robot.

Ha, the video game scene from the 1950s is pretty good. Tobor is
clearly more fun than the applied boredom robot host. Text to
speech synthesizers sound more human than that guy.

Yeah, I forgot to mention that it looks like that is where the game
"Asteroids" came from.

I like the crypto remote control for the gate, and his description
of how it was 'unbreakable'.
 

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