essay about engineers

John Larkin <jlarkin@highland_atwork_technology.com> wrote in
news:3qi05ftph6o5otenra1d8a11g96bbu37nf@4ax.com:

On Fri, 21 Feb 2020 13:11:05 -0800 (PST), Phil Allison
pallison49@gmail.com> wrote:

jla...@highlandsniptechnology.com wrote:

-----------------------------------------
https://www.americanthinker.com/articles/2020/02/michael_bloomber
g_the_engineer.html


** Never come across Mr Welderson before - seems like an expert
essay writer. I checked some of his other works in the link - re
abortion and "chicken little".

IMO he "engineers" readable and entertaining essays, long enough
to say something while short enough not to bore.

I think he has some pretty good insights and is smarter then the
average bear.



..... Phil


It's interesting that some really terrible people, terrorists and
dictators, started as, or were at least educated as, engineers.

Yeah, and some were fucking street sweeper.

No link, you stupid fucks!
 
On Saturday, February 22, 2020 at 10:21:59 AM UTC+11, John Larkin wrote:
On Fri, 21 Feb 2020 13:58:01 -0800 (PST), Phil Allison
pallison49@gmail.com> wrote:

John Larkin wrote:

---------------------


** Never come across Mr Welderson before - seems like an expert essay writer. I checked some of his other works in the link - re abortion and "chicken little".

IMO he "engineers" readable and entertaining essays, long enough to say something while short enough not to bore.

I think he has some pretty good insights and is smarter then the average bear.




It's interesting that some really terrible people, terrorists and
dictators, started as, or were at least educated as, engineers.



** Holding rigid ideas plus a total lack of empathy explains a lot.

Add a touch of the psychopath and you have it.

Likely those terrorists weren't very good engineers.

https://foreignpolicy.com/2013/07/11/theres-a-good-reason-why-so-many-terrorists-are-engineers/

https://rationalwiki.org/wiki/Engineers_and_woo


Of course, without engineers, there would be maybe 50 million humans
on Earth, mostly illiterate hunter-gatherers at war with neighboring
tribes.

Not being at war involves diplomats. Engineers have a tendency to respect facts, which does get in the way of effective diplomacy.

Not knowing the facts that you aren't respecting isn't an advantage, as Donald Trump illustrate.

--

Bill Sloman, Sydney
 
On 2/21/20 7:40 PM, DecadentLinuxUserNumeroUno@decadence.org wrote:
Phil Allison <pallison49@gmail.com> wrote in
news:89ba17e6-e132-4352-b694-749da6e9f921@googlegroups.com:

jla...@highlandsniptechnology.com wrote:

-----------------------------------------
https://www.americanthinker.com/articles/2020/02/michael_bloomberg
_the_engineer.html


** Never come across Mr Welderson before - seems like an expert
essay writer. I checked some of his other works in the link - re
abortion and "chicken little".

IMO he "engineers" readable and entertaining essays, long enough
to say something while short enough not to bore.

I think he has some pretty good insights and is smarter then the
average bear.



..... Phil




Except where he said that engineers do not make good leaders.

In that view, the dope is an abject idiot.

Well they sure ain't going to make it as Miss Congeniality.
 
On 2/21/20 6:51 PM, Les Cargill wrote:
DecadentLinuxUserNumeroUno@decadence.org wrote:
jlarkin@highlandsniptechnology.com wrote in
news:eek:vsv4f1gtc2kuf3l5kakqnlgdkdr1u31tq@4ax.com:


https://www.americanthinker.com/articles/2020/02/michael_bloomberg_
the_engineer.html




   So what is your position, jackass?  Are you a trumptarded dipshit
gonna dis the man?  Or credit him with being four orders of magnitude
more intelligent than the dangerous buffoon retards like you helped
put in our nation's highest office?  Which is it, Trumpanzee punk?

   Do you know what he engineered and made his money on BEFORE he
became an investment mogul?

   He engineered the terminals ALL of Wall Street used for two
decades.

   He got rich the same way Perot did.  By hard work.


Heh. Owner of the first company I worked for bought one. Not for
"hard work"  but to pump and dump his own penny stock. Just like
the plot from "The Wolf of Wall Street" but smaller time. Got away with
it for *decades*.

These are the people the inventors of the 401k and IRAs insist is a good
idea to put your retirement savings into the hands of.
 
On 2020-02-21, Clifford Heath <no.spam@please.net> wrote:
On 22/2/20 6:02 am, Phil Hobbs wrote:

Who's going to be doing the hooking up?  If it's students, I really like
metal-body BNCs.  They're far more durable than SMBs or SMAs.  For
sending analogue signals between boards, we often use U.FL (UMCC) coax
connections, which are cheap, good, and small.


[...] I've
looked but not found the end connectors, only finished cables. The SMD
sockets are legion, but not the cable ends. Is that patent/design licensing?

https://media.digikey.com/pdf/Data%20Sheets/Harwin%20PDFs/UMCP-8020005_Dwg.pdf
but, obsolete according to digikey. Harwin disclaims all knowledge SFAICT

Hirose is selling pre-fabricated cables only.

Some rumour suggests that some type IPEX MHF is compatible.
https://www.i-pex.com/products#rf
but their crimping machine looks very expensive.

--
Jasen.
 
On 2/21/20 10:15 AM, jlarkin@highlandsniptechnology.com wrote:
https://www.americanthinker.com/articles/2020/02/michael_bloomberg_the_engineer.html

Lol here's a picture of the average "American Thinker" reader:

<https://cdn.costumewall.com/wp-content/uploads/2017/01/walter-sobchak.jpg>

"Swear to God Im gonna shoot these lib snowflakes! I'mma shoot! GRRR!"
 
On 22/2/20 3:43 pm, Jasen Betts wrote:
On 2020-02-21, Clifford Heath <no.spam@please.net> wrote:
On 22/2/20 6:02 am, Phil Hobbs wrote:

Who's going to be doing the hooking up?  If it's students, I really like
metal-body BNCs.  They're far more durable than SMBs or SMAs.  For
sending analogue signals between boards, we often use U.FL (UMCC) coax
connections, which are cheap, good, and small.


[...] I've
looked but not found the end connectors, only finished cables. The SMD
sockets are legion, but not the cable ends. Is that patent/design licensing?

https://media.digikey.com/pdf/Data%20Sheets/Harwin%20PDFs/UMCP-8020005_Dwg.pdf
but, obsolete according to digikey. Harwin disclaims all knowledge SFAICT

Hirose is selling pre-fabricated cables only.

Some rumour suggests that some type IPEX MHF is compatible.
https://www.i-pex.com/products#rf
but their crimping machine looks very expensive.

Thanks Jason. I don't know that I want to actually do this, but it
worried me to not be able to find out how to.

Clifford Heath
 
bitrex <user@example.net> wrote in
news:FM04G.106469$%Y7.43514@fx04.iad:

On 2/21/20 6:51 PM, Les Cargill wrote:
DecadentLinuxUserNumeroUno@decadence.org wrote:
jlarkin@highlandsniptechnology.com wrote in
news:eek:vsv4f1gtc2kuf3l5kakqnlgdkdr1u31tq@4ax.com:


https://www.americanthinker.com/articles/2020/02/michael_bloombe
rg_ the_engineer.html




   So what is your position, jackass?  Are you a trumptarded
dipshit gonna dis the man?  Or credit him with being four
orders of magnitude more intelligent than the dangerous buffoon
retards like you helped put in our nation's highest office? 
Which is it, Trumpanzee punk?

   Do you know what he engineered and made his money on BEFORE
he became an investment mogul?

   He engineered the terminals ALL of Wall Street used for two
decades.

   He got rich the same way Perot did.  By hard work.


Heh. Owner of the first company I worked for bought one. Not for
"hard work"  but to pump and dump his own penny stock. Just like
the plot from "The Wolf of Wall Street" but smaller time. Got
away with it for *decades*.


These are the people the inventors of the 401k and IRAs insist is
a good idea to put your retirement savings into the hands of.

America would have gone under long ago had employers all were
required to establish pension plans for their workers. They would
have left the country completely, not just in the 80% range.

And Pension systems are obsolete anyway. Works in the military,
and with Federal and State jobs, but not much else.

But yeah, 401K might have been good IF *WE* ere the ones deciding
were to invest and there were no retarded little fees being applied
to our accounts.

Still completely fixable.
 
bitrex <user@example.net> wrote in news:_W%3G.106468$%Y7.23513
@fx04.iad:

On 2/21/20 7:40 PM, DecadentLinuxUserNumeroUno@decadence.org wrote:
Phil Allison <pallison49@gmail.com> wrote in
news:89ba17e6-e132-4352-b694-749da6e9f921@googlegroups.com:

jla...@highlandsniptechnology.com wrote:

-----------------------------------------

https://www.americanthinker.com/articles/2020/02/michael_bloomberg
_the_engineer.html


** Never come across Mr Welderson before - seems like an expert
essay writer. I checked some of his other works in the link - re
abortion and "chicken little".

IMO he "engineers" readable and entertaining essays, long enough
to say something while short enough not to bore.

I think he has some pretty good insights and is smarter then the
average bear.



..... Phil




Except where he said that engineers do not make good leaders.

In that view, the dope is an abject idiot.


Well they sure ain't going to make it as Miss Congeniality.

Like our walking "top o' the retard class" jackass currently
empowered by retards is.
 
On Friday, February 21, 2020 at 6:51:23 PM UTC-5, Clifford Heath wrote:
On 22/2/20 10:14 am, Phil Hobbs wrote:
The issue is when people connect a higher voltage wart that has the same
connector.  To prevent that sort of breakage, we standardized on the
highest common voltage that connects with a 5/2.5 mm barrel connector.

1W 20V zener and a polyfuse (bypassed by a warning LED+R) across the
incoming rail? Would that even work?

Clifford Heath.

1 watt at 20 V ~ 50 mA... do they make poly fuses that small?
OK I found one with I_trip = 0.1 A. So a 2 watt zener?

George H.
 
On Friday, February 21, 2020 at 6:14:23 PM UTC-5, Phil Hobbs wrote:
On 2020-02-21 17:19, Clifford Heath wrote:
On 22/2/20 6:02 am, Phil Hobbs wrote:
On 2020-02-21 13:26, George Herold wrote:
So (at least for myself and home lab) I've been thinking of
using aluminum U-chan. to make project/ circuit boxes.


Who's going to be doing the hooking up?  If it's students, I really
like metal-body BNCs.  They're far more durable than SMBs or SMAs..
For sending analogue signals between boards, we often use U.FL (UMCC)
coax connections, which are cheap, good, and small.


Phil, how do you acquire U.FL cables? Just use the pre-fab ones? I've
looked but not found the end connectors, only finished cables. The SMD
sockets are legion, but not the cable ends. Is that patent/design
licensing?

Dunno. I wouldn't want to make one by hand, for sure. OTOH I haven't
made a BNC cable in probably 20 years either.
Huh, given the right crimp tool BNC connectors are easy...
Well I made tons with smaller size coax RG-174.
Of course the 'right' crimp tool will set you back a few hundred bucks.

George H.
1 foot of 2" deep by 4" wide U-chan is ~$18 on McM-C


I've made some cases from 50x50mm square extrusion in 1.6mm wall
thickness. I cut them length-ways into assymetric U-channel with 12mm
and 35mm sides (plus 3mm saw kerf). The 50mm is the front or back panel,
the 35mm gets pop-riveted to a base sheet that can be as deep as you want.

Wish I could get 60mmx60mm, but they only make that in bigger wall
thicknesses. But I like having a standard front-panel height (and 50mm
is enough) with a depth that's continuously variable.

Yeah, higher voltage supplies make things easier, except that if
you're making high current low voltage rails (e.g. our class-H TEC
driver) you sometimes need to step down to an intermediate voltage.
(It isn't too efficient using an async buck to make 1.3 volts at 3 amps.)


We were thinking of standardising on providing 5V and 12V for our
(RF+signal) modules. 5V is not too wasteful to use linear regs to make
clean 3v3, and 12v is high enough to efficiently transform to any other
rail.

Not unreasonable. Our approach is to attempt to make stuff work OK from
either our suggested wart (an SL Power ME10A2403B01) or any random 20V
laptop supply that fits the connector. We've done stuff that runs off a
micro-USB 5V supply as well.

The issue is when people connect a higher voltage wart that has the same
connector. To prevent that sort of breakage, we standardized on the
highest common voltage that connects with a 5/2.5 mm barrel connector.

Cheers

Phil Hobbs

--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC / Hobbs ElectroOptics
Optics, Electro-optics, Photonics, Analog Electronics
Briarcliff Manor NY 10510

http://electrooptical.net
http://hobbs-eo.com
 
On Friday, February 21, 2020 at 5:19:34 PM UTC-5, Clifford Heath wrote:
On 22/2/20 6:02 am, Phil Hobbs wrote:
On 2020-02-21 13:26, George Herold wrote:
So (at least for myself and home lab) I've been thinking of
using aluminum U-chan. to make project/ circuit boxes.


Who's going to be doing the hooking up?  If it's students, I really like
metal-body BNCs.  They're far more durable than SMBs or SMAs.  For
sending analogue signals between boards, we often use U.FL (UMCC) coax
connections, which are cheap, good, and small.


Phil, how do you acquire U.FL cables? Just use the pre-fab ones? I've
looked but not found the end connectors, only finished cables. The SMD
sockets are legion, but not the cable ends. Is that patent/design licensing?

1 foot of 2" deep by 4" wide U-chan is ~$18 on McM-C


I've made some cases from 50x50mm square extrusion in 1.6mm wall
thickness. I cut them length-ways into assymetric U-channel with 12mm
and 35mm sides (plus 3mm saw kerf). The 50mm is the front or back panel,
the 35mm gets pop-riveted to a base sheet that can be as deep as you want..

Wish I could get 60mmx60mm, but they only make that in bigger wall
thicknesses. But I like having a standard front-panel height (and 50mm
is enough) with a depth that's continuously variable.
Yeah there are 6063 square tubes
https://www.mcmaster.com/catalog/126/3901
And also U-chan. with more constant wall thickness..
Yeah, higher voltage supplies make things easier, except that if you're
making high current low voltage rails (e.g. our class-H TEC driver) you
sometimes need to step down to an intermediate voltage.  (It isn't too
efficient using an async buck to make 1.3 volts at 3 amps.)


We were thinking of standardising on providing 5V and 12V for our
(RF+signal) modules. 5V is not too wasteful to use linear regs to make
clean 3v3, and 12v is high enough to efficiently transform to any other
rail.

Clifford Heath.
I'm mostly old school and think +/-15... which mostly doesn't exist any
more. So when Phil mentioned 24V as a standard, I though,
"Oh I can make some sort of rail splitter, +/-12 or +20 -4.. whatever
I want."
Lot's of circuits like that can work at lower or higher PS input
voltages too. A big seller at my PPoE was a DC audio amp.
Two LM675's one split the rail and the other was a x20 amp.
made of +15V input, but you could put in a 30 V supply and
get more out of it.

George H.
 
1 watt at 20 V ~ 50 mA... do they make poly fuses that small?  
OK I found one with I_trip = 0.1 A.  So a 2 watt zener?  

Littelfuse RXEF005.

Cheers

Phil Hobbs
 
George Herold wrote...
On February 21, 2020, Phil Hobbs wrote:

I haven't made a BNC cable in probably 20 years either.

Huh, given the right crimp tool BNC connectors are easy...

I get stock or custom-made from Amphenol Cables On Demand.
They're good quality, very affordable, quick delivery.


--
Thanks,
- Win
 
On 2020-02-22 10:01, George Herold wrote:
On Friday, February 21, 2020 at 6:14:23 PM UTC-5, Phil Hobbs wrote:
On 2020-02-21 17:19, Clifford Heath wrote:
On 22/2/20 6:02 am, Phil Hobbs wrote:
On 2020-02-21 13:26, George Herold wrote:
So (at least for myself and home lab) I've been thinking of
using aluminum U-chan. to make project/ circuit boxes.


Who's going to be doing the hooking up?  If it's students, I really
like metal-body BNCs.  They're far more durable than SMBs or SMAs..
For sending analogue signals between boards, we often use U.FL (UMCC)
coax connections, which are cheap, good, and small.


Phil, how do you acquire U.FL cables? Just use the pre-fab ones? I've
looked but not found the end connectors, only finished cables. The SMD
sockets are legion, but not the cable ends. Is that patent/design
licensing?

Dunno. I wouldn't want to make one by hand, for sure. OTOH I haven't
made a BNC cable in probably 20 years either.
Huh, given the right crimp tool BNC connectors are easy...
Well I made tons with smaller size coax RG-174.
Of course the 'right' crimp tool will set you back a few hundred bucks.

George H.

At IBM, I had a hex crimp tool with dies for RG-174, RG-188/9, and
RG-58. IIRC it was $450 in about 1990.

These days I just buy patch cords and adapters.

I also have probably 100 RG-174 cables with BNCs on one end, that I
harvested from a test setup that was languishing in the front hall of
IBM Watson a couple of aisles down from my office, circa 1989 when I had
just gone from post-doc to RSM.

When my boss saw me squatting on the floor pulling pieces off that
gizmo, he laughed and said "You're a professional now, Phil." (He was
the one that got me hired full-time.)

I kept on doing it for another half hour or so. He and I are still friends.

Cheers

Phil Hobbs

--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC / Hobbs ElectroOptics
Optics, Electro-optics, Photonics, Analog Electronics
Briarcliff Manor NY 10510

http://electrooptical.net
http://hobbs-eo.com
 
On Fri, 21 Feb 2020 19:37:02 -0500, Phil Hobbs
<pcdhSpamMeSenseless@electrooptical.net> wrote:

On 2020-02-21 18:51, Clifford Heath wrote:
On 22/2/20 10:14 am, Phil Hobbs wrote:
The issue is when people connect a higher voltage wart that has the
same connector.  To prevent that sort of breakage, we standardized on
the highest common voltage that connects with a 5/2.5 mm barrel
connector.

1W 20V zener and a polyfuse (bypassed by a warning LED+R) across the
incoming rail? Would that even work?

Clifford Heath.

Sure, but polyfuses have very finite lifetimes, and ISTM it's easier to
just use 24V supplies. (We generally use a Littelfuse RXEF-series
polyfuse and a 26V unidirectional transzorb as well.)

At a system level, where reduction of copper wire complexity and total
mass is desirable, what I've done is to standardize on -48 Vdc for
distribution, with switching regulators in the end boxes to generate
whatever they need.

Why 48 Vdc? It's the highest voltage that is considered "low voltage"
in the National Electrical Code. Because it is widely used by the
telecommunications industry, there are endless options on the market.

Why _minus_ 48 Vdc? To eliminate electrolytic corrosion of wires and
connections in the distribution system, which can be industrial-plant
size, and will become dirty over time.

In the IT industry, many large datacenters (and some large radars)
distribute at 300 Vdc (+150 Vdc on one wire, -150 Vdc on the other.
This comes under the NEC for sure, but still saves a lot because the
individual boxes do not need rectifiers and big filter capacitors. The
large 150-Volt supplies are powered from three-phase 480 Vac prime
power.

Many Naval systems use 1000 Vdc. When they experience a short, it's
dramatic -- arc flash on steroids. Boiling copper drops everywhere.

Joe Gwinn
 
On Fri, 21 Feb 2020 12:54:45 -0800, John Larkin
<jlarkin@highland_atwork_technology.com> wrote:

On Fri, 21 Feb 2020 20:28:19 +0000, David Nadlinger
david@klickverbot.at> wrote:

On 21.02.20 7:50 pm, John Larkin wrote:
Here's a pulse generator output stage, as a mouse-bite component.

https://www.dropbox.com/s/w9ax8q9u00obnx4/T577_Glob_2.jpg?raw=1

Is that epoxy top for mechanical robustness of some (presumably GaN)
chip, or just for IP protection reasons?

— David

Both. I'm using EPC BGA GaN fets, and they are very fragile. A tiny
bump can knock them off the board, or fracture the chip. They are like
little glass blocks with sharp corners.

We need better epoxy, higher viscosity to cover all the parts, and a
nice way to dispense in production. Maybe a pump nozzle on our Tormach
n/c mill?

It sounds to me like you need a thixotropic epoxy mix. Liquifies when
pumped, then stiffens up so it won't drool off the board.

..<https://www.masterbond.com/properties/thixotropic-adhesives>

Joe Gwinn
 
On Sun, 23 Feb 2020 12:03:11 -0500, Joe Gwinn <joegwinn@comcast.net>
wrote:

On Fri, 21 Feb 2020 12:54:45 -0800, John Larkin
jlarkin@highland_atwork_technology.com> wrote:

On Fri, 21 Feb 2020 20:28:19 +0000, David Nadlinger
david@klickverbot.at> wrote:

On 21.02.20 7:50 pm, John Larkin wrote:
Here's a pulse generator output stage, as a mouse-bite component.

https://www.dropbox.com/s/w9ax8q9u00obnx4/T577_Glob_2.jpg?raw=1

Is that epoxy top for mechanical robustness of some (presumably GaN)
chip, or just for IP protection reasons?

— David

Both. I'm using EPC BGA GaN fets, and they are very fragile. A tiny
bump can knock them off the board, or fracture the chip. They are like
little glass blocks with sharp corners.

We need better epoxy, higher viscosity to cover all the parts, and a
nice way to dispense in production. Maybe a pump nozzle on our Tormach
n/c mill?

It sounds to me like you need a thixotropic epoxy mix. Liquifies when
pumped, then stiffens up so it won't drool off the board.

.<https://www.masterbond.com/properties/thixotropic-adhesives

Joe Gwinn

I remember bad experiences with Master Bond. How are they these days?
They want me to register by filling out forms. No direct email
address. What a nuisance.

I think I want a liquid but high viscosity epoxy. Thixotropic might
not flow into nooks and crannies, and wouldn't look nice and shiny.



--

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 Sun, 23 Feb 2020 10:16:11 -0800, jlarkin@highlandsniptechnology.com
wrote:

On Sun, 23 Feb 2020 12:03:11 -0500, Joe Gwinn <joegwinn@comcast.net
wrote:

On Fri, 21 Feb 2020 12:54:45 -0800, John Larkin
jlarkin@highland_atwork_technology.com> wrote:

On Fri, 21 Feb 2020 20:28:19 +0000, David Nadlinger
david@klickverbot.at> wrote:

On 21.02.20 7:50 pm, John Larkin wrote:
Here's a pulse generator output stage, as a mouse-bite component.

https://www.dropbox.com/s/w9ax8q9u00obnx4/T577_Glob_2.jpg?raw=1

Is that epoxy top for mechanical robustness of some (presumably GaN)
chip, or just for IP protection reasons?

— David

Both. I'm using EPC BGA GaN fets, and they are very fragile. A tiny
bump can knock them off the board, or fracture the chip. They are like
little glass blocks with sharp corners.

We need better epoxy, higher viscosity to cover all the parts, and a
nice way to dispense in production. Maybe a pump nozzle on our Tormach
n/c mill?

It sounds to me like you need a thixotropic epoxy mix. Liquifies when
pumped, then stiffens up so it won't drool off the board.

.<https://www.masterbond.com/properties/thixotropic-adhesives

Joe Gwinn

I remember bad experiences with Master Bond. How are they these days?
They want me to register by filling out forms. No direct email
address. What a nuisance.

I think I want a liquid but high viscosity epoxy. Thixotropic might
not flow into nooks and crannies, and wouldn't look nice and shiny.

Everybody makes the thixotropic epoxy, and all viscosities are
available, not just the pasty stuff shown in the ad. So I'd ask
around.

Joe Gwinn
 
On Mon, 24 Feb 2020 09:09:52 -0500, Joe Gwinn <joegwinn@comcast.net>
wrote:

On Sun, 23 Feb 2020 10:16:11 -0800, jlarkin@highlandsniptechnology.com
wrote:

On Sun, 23 Feb 2020 12:03:11 -0500, Joe Gwinn <joegwinn@comcast.net
wrote:

On Fri, 21 Feb 2020 12:54:45 -0800, John Larkin
jlarkin@highland_atwork_technology.com> wrote:

On Fri, 21 Feb 2020 20:28:19 +0000, David Nadlinger
david@klickverbot.at> wrote:

On 21.02.20 7:50 pm, John Larkin wrote:
Here's a pulse generator output stage, as a mouse-bite component.

https://www.dropbox.com/s/w9ax8q9u00obnx4/T577_Glob_2.jpg?raw=1

Is that epoxy top for mechanical robustness of some (presumably GaN)
chip, or just for IP protection reasons?

— David

Both. I'm using EPC BGA GaN fets, and they are very fragile. A tiny
bump can knock them off the board, or fracture the chip. They are like
little glass blocks with sharp corners.

We need better epoxy, higher viscosity to cover all the parts, and a
nice way to dispense in production. Maybe a pump nozzle on our Tormach
n/c mill?

It sounds to me like you need a thixotropic epoxy mix. Liquifies when
pumped, then stiffens up so it won't drool off the board.

.<https://www.masterbond.com/properties/thixotropic-adhesives

Joe Gwinn

I remember bad experiences with Master Bond. How are they these days?
They want me to register by filling out forms. No direct email
address. What a nuisance.

I think I want a liquid but high viscosity epoxy. Thixotropic might
not flow into nooks and crannies, and wouldn't look nice and shiny.

Everybody makes the thixotropic epoxy, and all viscosities are
available, not just the pasty stuff shown in the ad. So I'd ask
around.

Joe Gwinn

By definition, thixotropics don't flow. Like mayonaise.



--

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"
 

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