nice enclosure

[John Larkin]

https://www.dropbox.com/s/a88dfus3z1wrjii/P900_Box_1.jpg?raw=1

https://www.dropbox.com/s/6pjs77u4q8u6sr7/P900_Box_4.jpg?raw=1

https://www.dropbox.com/s/aiquxwbnwo05go8/P900_Box_5.jpg?raw=1


This was made by Protocase, to our Solidwords design and artwork. It's
laser-cut aluminum with a beautiful conductive finish that looks like
stainless.



--

John Larkin Highland Technology, Inc
picosecond timing precision measurement

jlarkin att highlandtechnology dott com
http://www.highlandtechnology.com

 

[George Herold]

It does look nice. Do the holes on the bottom line up
with the front panel well enough?
(I use to not design in enough wiggle room.)
Aluminum is nice for heat sinks.

Boxes are expensive.

George h.

 

[John S]

On 3/2/2020 12:45 PM, John Larkin wrote:

https://www.dropbox.com/s/a88dfus3z1wrjii/P900_Box_1.jpg?raw=1

https://www.dropbox.com/s/6pjs77u4q8u6sr7/P900_Box_4.jpg?raw=1

https://www.dropbox.com/s/aiquxwbnwo05go8/P900_Box_5.jpg?raw=1


This was made by Protocase, to our Solidwords design and artwork. It's
laser-cut aluminum with a beautiful conductive finish that looks like
stainless.

Beautiful! I'll bet it cost a bundle.

 

John Larkin <jlarkin@highland_atwork_technology.com> wrote in
news:6pkq5flnbe4c2fb8g7ckj9q2pk6l1net77@4ax.com:

https://www.dropbox.com/s/a88dfus3z1wrjii/P900_Box_1.jpg?raw=1

https://www.dropbox.com/s/6pjs77u4q8u6sr7/P900_Box_4.jpg?raw=1

https://www.dropbox.com/s/aiquxwbnwo05go8/P900_Box_5.jpg?raw=1


This was made by Protocase, to our Solidwords design and artwork.
It's laser-cut aluminum with a beautiful conductive finish that
looks like stainless.

What gets simulated? The phase position between them? The
frequency (for mil apps)? Or is this to power a 3 phase device in a
single phase rack?

 

George Herold <ggherold@gmail.com> wrote in news:7ed51bbb-c3ab-4562-
a6b0-2e45547f64b7@googlegroups.com:

It does look nice. Do the holes on the bottom line up
with the front panel well enough?
(I use to not design in enough wiggle room.)
Aluminum is nice for heat sinks.

Boxes are expensive.

George h.

I made a 4U instrument tray for heavy gear in my CAD app.

<http://www.mediafire.com/file/3utpm7kmg4ofd6k/2U_Rugged_Rack_Tray.pd
f/file>

But it is a machined plate front panel. A much heavier design.
His front panel is too thin if the gear inside is heavy. And as long
as that thing is (full spec), it is very likely too heavy for that
front panel thickness. That is the thickness one would select for a
1U device.

Remember again that the spec for a rack mounted device is that it
can self support from the four front mount holes alone.

Them suckers look pretty thin to me for that height and length box.

And I have seen a LOT of HP and Cisco and Juniper devices which max
out the amount a person can stuff into a chassis. NONE sport thin
front plates.

Most place heavy gear holes along the side of the front edge and
attach "mounting ears" to those holes shifting the location of the
support pressure. And allowing for a thin front plate with thick ears
attached to it.

The design spec for a rack device is that it can handle fully free
suspended installation with nothing above or below and hang it's
weight 100% on the "ears" of the front panel.

So if all the stuff he puts in there has little weight, he'll be
alright. If that is a heavy design, the front panel should likely be
a bit thicker.

 

John S <Sophi.2@invalid.org> wrote in
news:r3jm56$8g9$4@dont-email.me:

On 3/2/2020 12:45 PM, John Larkin wrote:


https://www.dropbox.com/s/a88dfus3z1wrjii/P900_Box_1.jpg?raw=1

https://www.dropbox.com/s/6pjs77u4q8u6sr7/P900_Box_4.jpg?raw=1

https://www.dropbox.com/s/aiquxwbnwo05go8/P900_Box_5.jpg?raw=1


This was made by Protocase, to our Solidwords design and artwork.
It's laser-cut aluminum with a beautiful conductive finish that
looks like stainless.


Beautiful! I'll bet it cost a bundle.

I'd bet he got them at less than $80 each.

 

[John Larkin]

On Mon, 2 Mar 2020 11:02:38 -0800 (PST), George Herold
<ggherold@gmail.com> wrote:

It does look nice. Do the holes on the bottom line up
with the front panel well enough?

I sure hope so. One screw on the front panel screws into the bottom
plate and sort of pins them together.

Here's the overall view.

https://www.dropbox.com/s/6seyl0wl646xwg0/3d_2.jpg?raw=1

The control board behind the panel has LEDs on top and BNCs on the
bottom. I hope they all line up. We'll use light pipes for the LEDs.

(I use to not design in enough wiggle room.)
Aluminum is nice for heat sinks.

Boxes are expensive.

Yes, but laser cutting and inkjet printing help. It's cheaper to do a
full custom box than to buy some junky stock thing and machine it.

George h.
--

John Larkin Highland Technology, Inc
picosecond timing precision measurement

jlarkin att highlandtechnology dott com
http://www.highlandtechnology.com

 

DecadentLinuxUserNumeroUno@decadence.org wrote in
news:r3jmrr$puk$1@gioia.aioe.org:

George Herold <ggherold@gmail.com> wrote in
news:7ed51bbb-c3ab-4562- a6b0-2e45547f64b7@googlegroups.com:

It does look nice. Do the holes on the bottom line up
with the front panel well enough?
(I use to not design in enough wiggle room.)
Aluminum is nice for heat sinks.

Boxes are expensive.

George h.


I made a 4U instrument tray for heavy gear in my CAD app.

http://www.mediafire.com/file/3utpm7kmg4ofd6k/2U_Rugged_Rack_Tray.
pd f/file

But it is a machined plate front panel. A much heavier design.
His front panel is too thin if the gear inside is heavy. And as
long as that thing is (full spec), it is very likely too heavy for
that front panel thickness. That is the thickness one would
select for a 1U device.

Remember again that the spec for a rack mounted device is that
it
can self support from the four front mount holes alone.

Them suckers look pretty thin to me for that height and length
box.

And I have seen a LOT of HP and Cisco and Juniper devices which
max
out the amount a person can stuff into a chassis. NONE sport thin
front plates.

Most place heavy gear holes along the side of the front edge and
attach "mounting ears" to those holes shifting the location of the
support pressure. And allowing for a thin front plate with thick
ears attached to it.

The design spec for a rack device is that it can handle fully
free
suspended installation with nothing above or below and hang it's
weight 100% on the "ears" of the front panel.

So if all the stuff he puts in there has little weight, he'll be
alright. If that is a heavy design, the front panel should likely
be a bit thicker.

You need to put these on there or silk screen the line art or
similar declarations...

<http://www.mediafire.com/file/r2yvfmmxs2bw5s2/electrical-shock-burn-
hazard-label-lb-2397.png/file>

<http://www.mediafire.com/file/tpkog9o8la6ruxs/hazardous-voltage-
ansi-warning-label-lb-2392.png/file>

 

John Larkin <jlarkin@highland_atwork_technology.com> wrote in
news:eqmq5fdn5b9ie7r11q27f7c3pe6qas7ict@4ax.com:

> https://www.dropbox.com/s/6seyl0wl646xwg0/3d_2.jpg?raw=1

That front plate should be at least 3mm thick, maybe even 4mm. And
only two screws on each side holding the chassis box onto the front
plate is another fail. Pretty weak for that thin side panel
thickness. Id go with four PEMs and countersunk #8 screws from the
front of the panel in. 8 all together. Screws are cheap. So are
PEMs. They also look good. Socket head countersunk screws look good
too.

I mean those are 3 big toroidal transformers you have way back
there in the rear of the chassis, right? That is a lot of stress on
those front panel attachment tabs.

This could only be installed with another box or support under it.
From appearances. I do not think it would self support as it should
in a rack with nothing below it. Not without placing extreme stress
on the 4 box to front panel mating screws and the front panel itself.

 

John Larkin <jlarkin@highland_atwork_technology.com> wrote in
news:6pkq5flnbe4c2fb8g7ckj9q2pk6l1net77@4ax.com:

https://www.dropbox.com/s/a88dfus3z1wrjii/P900_Box_1.jpg?raw=1

https://www.dropbox.com/s/6pjs77u4q8u6sr7/P900_Box_4.jpg?raw=1

https://www.dropbox.com/s/aiquxwbnwo05go8/P900_Box_5.jpg?raw=1


This was made by Protocase, to our Solidwords design and artwork.
It's laser-cut aluminum with a beautiful conductive finish that
looks like stainless.

You may have to spot face the back side of some of those front
panel holes to make the mount depth right on the device you are
putting in there.

 

[John Larkin]

On Mon, 2 Mar 2020 13:18:01 -0600, John S <Sophi.2@invalid.org> wrote:

On 3/2/2020 12:45 PM, John Larkin wrote:


https://www.dropbox.com/s/a88dfus3z1wrjii/P900_Box_1.jpg?raw=1

https://www.dropbox.com/s/6pjs77u4q8u6sr7/P900_Box_4.jpg?raw=1

https://www.dropbox.com/s/aiquxwbnwo05go8/P900_Box_5.jpg?raw=1


This was made by Protocase, to our Solidwords design and artwork. It's
laser-cut aluminum with a beautiful conductive finish that looks like
stainless.


Beautiful! I'll bet it cost a bundle.

$280 per. Very roughly 2% of the sales price of the product.


--

John Larkin Highland Technology, Inc
picosecond timing precision measurement

jlarkin att highlandtechnology dott com
http://www.highlandtechnology.com

 

[Jasen Betts]

On 2020-03-02, DecadentLinuxUserNumeroUno@decadence.org <DecadentLinuxUserNumeroUno@decadence.org> wrote:

John Larkin <jlarkin@highland_atwork_technology.com> wrote in
news:6pkq5flnbe4c2fb8g7ckj9q2pk6l1net77@4ax.com:



https://www.dropbox.com/s/a88dfus3z1wrjii/P900_Box_1.jpg?raw=1

https://www.dropbox.com/s/6pjs77u4q8u6sr7/P900_Box_4.jpg?raw=1

https://www.dropbox.com/s/aiquxwbnwo05go8/P900_Box_5.jpg?raw=1


This was made by Protocase, to our Solidwords design and artwork.
It's laser-cut aluminum with a beautiful conductive finish that
looks like stainless.

What gets simulated? The phase position between them? The
frequency (for mil apps)? Or is this to power a 3 phase device in a
single phase rack?

I'm guessing this is the aircraft altenator simulator that was
discussed starting last year some time.

--
Jasen.

 

[Andy Bennet]

On 02/03/2020 18:45, John Larkin wrote:

https://www.dropbox.com/s/a88dfus3z1wrjii/P900_Box_1.jpg?raw=1

https://www.dropbox.com/s/6pjs77u4q8u6sr7/P900_Box_4.jpg?raw=1

https://www.dropbox.com/s/aiquxwbnwo05go8/P900_Box_5.jpg?raw=1


This was made by Protocase, to our Solidwords design and artwork. It's
laser-cut aluminum with a beautiful conductive finish that looks like
stainless.

I would have used CD welded studs on the front panel for attachment.
Would look so much cleaner.

 

Andy Bennet <andyb@andy.com> wrote in
news:leWdnfry6LljiMPDnZ2dnUU78fmdnZ2d@brightview.co.uk:

On 02/03/2020 18:45, John Larkin wrote:


https://www.dropbox.com/s/a88dfus3z1wrjii/P900_Box_1.jpg?raw=1

https://www.dropbox.com/s/6pjs77u4q8u6sr7/P900_Box_4.jpg?raw=1

https://www.dropbox.com/s/aiquxwbnwo05go8/P900_Box_5.jpg?raw=1


This was made by Protocase, to our Solidwords design and artwork.
It's laser-cut aluminum with a beautiful conductive finish that
looks like stainless.


I would have used CD welded studs on the front panel for
attachment. Would look so much cleaner.

Yeah, there is that. I would use more than one along the bottom
too. Oh and one should be Copper. Since the front panel is the
thickest, it needs the central ground stud to be placed there as
well. Unless he has them all "isolated". Sure.

 

On Mon, 02 Mar 2020 10:45:36 -0800, John Larkin wrote:

https://www.dropbox.com/s/a88dfus3z1wrjii/P900_Box_1.jpg?raw=1

https://www.dropbox.com/s/6pjs77u4q8u6sr7/P900_Box_4.jpg?raw=1

https://www.dropbox.com/s/aiquxwbnwo05go8/P900_Box_5.jpg?raw=1


This was made by Protocase, to our Solidwords design and artwork. It's
laser-cut aluminum with a beautiful conductive finish that looks like
stainless.

Very nice.

Seeing the 3D render with the three big toroidal transformers at the back
reminded me of the one and only product I've done in a 19" rack-mount
case. It had two big linear PSUs, and I wasn't brave enough to fit them
at the back. Putting that amount of leverage on the front panel seemed
brutal, but lots of other designers seem to do it that way. And fitting
the PSUs at the front, of course, caused a whole 'nother set of
problems...

 

news@rblack01.plus.com wrote in news:r3l8g0$e33$2@dont-email.me:

This was made by Protocase, to our Solidwords design and artwork.
It's laser-cut aluminum with a beautiful conductive finish that
looks like stainless.

Solidwords? Is that the new Microsift 3D CAD package?

Or is that where you make your 'word salad' from...

Sticks and stones break my bones but words have never been solid.

And $280 each? Did you only order two? Seems a bit steep.

 

[George Herold]

On Monday, March 2, 2020 at 4:07:33 PM UTC-5, John Larkin wrote:

On Mon, 2 Mar 2020 13:18:01 -0600, John S <Sophi.2@invalid.org> wrote:

On 3/2/2020 12:45 PM, John Larkin wrote:


https://www.dropbox.com/s/a88dfus3z1wrjii/P900_Box_1.jpg?raw=1

https://www.dropbox.com/s/6pjs77u4q8u6sr7/P900_Box_4.jpg?raw=1

https://www.dropbox.com/s/aiquxwbnwo05go8/P900_Box_5.jpg?raw=1


This was made by Protocase, to our Solidwords design and artwork. It's
laser-cut aluminum with a beautiful conductive finish that looks like
stainless.


Beautiful! I'll bet it cost a bundle.

$280 per. Very roughly 2% of the sales price of the product.

That sounds like a decent price. How many did you have to buy?
(If you don't mind me asking.)

George H.

--

John Larkin Highland Technology, Inc
picosecond timing precision measurement

jlarkin att highlandtechnology dott com
http://www.highlandtechnology.com

 

On Tue, 3 Mar 2020 09:37:04 -0000 (UTC), news@rblack01.plus.com wrote:

On Mon, 02 Mar 2020 10:45:36 -0800, John Larkin wrote:

https://www.dropbox.com/s/a88dfus3z1wrjii/P900_Box_1.jpg?raw=1

https://www.dropbox.com/s/6pjs77u4q8u6sr7/P900_Box_4.jpg?raw=1

https://www.dropbox.com/s/aiquxwbnwo05go8/P900_Box_5.jpg?raw=1


This was made by Protocase, to our Solidwords design and artwork. It's
laser-cut aluminum with a beautiful conductive finish that looks like
stainless.

Very nice.

Seeing the 3D render with the three big toroidal transformers at the back
reminded me of the one and only product I've done in a 19" rack-mount
case. It had two big linear PSUs, and I wasn't brave enough to fit them
at the back. Putting that amount of leverage on the front panel seemed
brutal, but lots of other designers seem to do it that way. And fitting
the PSUs at the front, of course, caused a whole 'nother set of
problems...

There's a kilowatt MeanWell 48-volt power supply bolted to the side of
the case; it's not heavy. The AC wires from the power entry on the
back to the supply will be under 2" long. The switch on the front
panel enables DC and doesn't switch real power.

The whole thing will weigh maybe 35 pounds, so I don't expect anything
to bend or break.



--

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 Tue, 3 Mar 2020 08:31:58 +0000, Andy Bennet <andyb@andy.com> wrote:

On 02/03/2020 18:45, John Larkin wrote:


https://www.dropbox.com/s/a88dfus3z1wrjii/P900_Box_1.jpg?raw=1

https://www.dropbox.com/s/6pjs77u4q8u6sr7/P900_Box_4.jpg?raw=1

https://www.dropbox.com/s/aiquxwbnwo05go8/P900_Box_5.jpg?raw=1


This was made by Protocase, to our Solidwords design and artwork. It's
laser-cut aluminum with a beautiful conductive finish that looks like
stainless.


I would have used CD welded studs on the front panel for attachment.
Would look so much cleaner.

We're not embarassed to admit that a box is held together with screws.
Personally, I don't usually like hidden fasteners.

The holes are clean conductive countersunk, and the back of the panel,
and the rest of the box, is conductive too.



--

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 Tue, 3 Mar 2020 05:38:29 -0000 (UTC), Jasen Betts
<jasen@xnet.co.nz> wrote:

On 2020-03-02, DecadentLinuxUserNumeroUno@decadence.org <DecadentLinuxUserNumeroUno@decadence.org> wrote:
John Larkin <jlarkin@highland_atwork_technology.com> wrote in
news:6pkq5flnbe4c2fb8g7ckj9q2pk6l1net77@4ax.com:



https://www.dropbox.com/s/a88dfus3z1wrjii/P900_Box_1.jpg?raw=1

https://www.dropbox.com/s/6pjs77u4q8u6sr7/P900_Box_4.jpg?raw=1

https://www.dropbox.com/s/aiquxwbnwo05go8/P900_Box_5.jpg?raw=1


This was made by Protocase, to our Solidwords design and artwork.
It's laser-cut aluminum with a beautiful conductive finish that
looks like stainless.

What gets simulated? The phase position between them? The
frequency (for mil apps)? Or is this to power a 3 phase device in a
single phase rack?

I'm guessing this is the aircraft altenator simulator that was
discussed starting last year some time.

Yes. We finally got the purchase order yesterday. An engine test cell
typically takes a couple of years from planning to operation.
Sometimes we design something, think it is a loser, and then much
later people start buying it.

I'd rather design something in one short push, but stretching out the
process does allow for some leisurely thinking, which is good too. Of
course, the leisurely thinking always ends in a panic to deliver.

The due date on the PO is tomorrow.





--

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"