On Sat, 20 Nov 2021 17:47:03 -0800, jlarkin@highlandsniptechnology.com
wrote:
>https://www.dropbox.com/s/do0k7ystcmmu1xg/T502A4.jpg?raw=1
>
>The real action is in the upper-right, 0.8 square inches. I had to lay
>that out myself because it's too hard to explain to anyone else.
>
>The Brat did the rest of the layout.
>
>Production wants the wings on the sides for fixturing. After the parts
>are stuffed, we can lop them off.
I think it's done. Resequenced and ready to go.
https://www.dropbox.com/s/pz6tszau9lsi403/T502A8.jpg?raw=1
I converted the v-scores (with great effort) to slots, and then
manufacturing made me make them back into v-scores.
--
If a man will begin with certainties, he shall end with doubts,
but if he will be content to begin with doubts he shall end in certainties.
Francis Bacon
Reply by John Larkin●November 22, 20212021-11-22
On Sun, 21 Nov 2021 17:28:33 +0000, TTman <kraken.sankey@gmail.com>
wrote:
>On 21/11/2021 15:47, Lasse Langwadt Christensen wrote:
>> s�ndag den 21. november 2021 kl. 02.47.11 UTC+1 skrev jla...@highlandsniptechnology.com:
>>> https://www.dropbox.com/s/do0k7ystcmmu1xg/T502A4.jpg?raw=1
>>>
>>
>> can you actually get a v-score made that doesn't go all the way across the board?
>>
>
>Err no...
Royal Circuits says yes. The others haven't replied yet.
--
If a man will begin with certainties, he shall end with doubts,
but if he will be content to begin with doubts he shall end in certainties.
Francis Bacon
Reply by ●November 22, 20212021-11-22
On Mon, 22 Nov 2021 09:33:03 +0100, Piotr Wyderski
<bombald@protonmail.com> wrote:
>jlarkin@highlandsniptechnology.com wrote:
>
>> We slice the v-scores on our big pizza cutter, not bend and snap.
>
>But still, why not a slot? This is a standard feature.
>
> Best regards, Piotr
Well, a lot of slots with tabs to cut. That's harder to draw.
It could give me a smooth edge for the monitor connector, but that's
only 1 GHz so doesn't care much.
--
Father Brown's figure remained quite dark and still;
but in that instant he had lost his head. His head was
always most valuable when he had lost it.
Reply by Piotr Wyderski●November 22, 20212021-11-22
jlarkin@highlandsniptechnology.com wrote:
> We slice the v-scores on our big pizza cutter, not bend and snap.
But still, why not a slot? This is a standard feature.
Best regards, Piotr
Reply by Clifford Heath●November 22, 20212021-11-22
On 22/11/21 10:20 am, Lasse Langwadt Christensen wrote:
> mandag den 22. november 2021 kl. 00.00.42 UTC+1 skrev Clifford Heath:
>> On 22/11/21 5:06 am, jla...@highlandsniptechnology.com wrote:
>>> On Sun, 21 Nov 2021 07:47:21 -0800 (PST), Lasse Langwadt Christensen
>>> <lang...@fonz.dk> wrote:
>>>
>>>> søndag den 21. november 2021 kl. 02.47.11 UTC+1 skrev jla...@highlandsniptechnology.com:
>>>>> https://www.dropbox.com/s/do0k7ystcmmu1xg/T502A4.jpg?raw=1
>>>>>
>>>>
>>>> can you actually get a v-score made that doesn't go all the way across the board?
>>>
>>> Can't see why not. We'll buy from the board house that will.
>> Each snap must go right across the remaining board, or they can't snap
>> it. Any v-score will run a bit past its notional end-point, and mustn't
>> run into another board.
>>
>> That's possible to ensure by insisting on the scores running across the
>> board.
>
> but it seems they can run part way
>
> https://youtu.be/orwKNB02Ado?t=30
Yes. But I was giving a reason why some board houses won't do that.
Reply by ●November 21, 20212021-11-21
On Mon, 22 Nov 2021 10:00:34 +1100, Clifford Heath
<no.spam@please.net> wrote:
>On 22/11/21 5:06 am, jlarkin@highlandsniptechnology.com wrote:
>> On Sun, 21 Nov 2021 07:47:21 -0800 (PST), Lasse Langwadt Christensen
>> <langwadt@fonz.dk> wrote:
>>
>>> s�ndag den 21. november 2021 kl. 02.47.11 UTC+1 skrev jla...@highlandsniptechnology.com:
>>>> https://www.dropbox.com/s/do0k7ystcmmu1xg/T502A4.jpg?raw=1
>>>>
>>>
>>> can you actually get a v-score made that doesn't go all the way across the board?
>>
>> Can't see why not. We'll buy from the board house that will.
>
>Each snap must go right across the remaining board, or they can't snap
>it. Any v-score will run a bit past its notional end-point, and mustn't
>run into another board.
>
>That's possible to ensure by insisting on the scores running across the
>board.
Sorry, I don't understand that. We will buy single boards, not panels,
so we can easily separate the little fixturing wings after
pick-and-place. The PCB house won't brickwall boards on their panel
because they route them apart.
We slice the v-scores on our big pizza cutter, not bend and snap.
--
Father Brown's figure remained quite dark and still;
but in that instant he had lost his head. His head was
always most valuable when he had lost it.
Reply by Lasse Langwadt Christensen●November 21, 20212021-11-21
mandag den 22. november 2021 kl. 00.00.42 UTC+1 skrev Clifford Heath:
> On 22/11/21 5:06 am, jla...@highlandsniptechnology.com wrote:
> > On Sun, 21 Nov 2021 07:47:21 -0800 (PST), Lasse Langwadt Christensen
> > <lang...@fonz.dk> wrote:
> >
> >> søndag den 21. november 2021 kl. 02.47.11 UTC+1 skrev jla...@highlandsniptechnology.com:
> >>> https://www.dropbox.com/s/do0k7ystcmmu1xg/T502A4.jpg?raw=1
> >>>
> >>
> >> can you actually get a v-score made that doesn't go all the way across the board?
> >
> > Can't see why not. We'll buy from the board house that will.
> Each snap must go right across the remaining board, or they can't snap
> it. Any v-score will run a bit past its notional end-point, and mustn't
> run into another board.
>
> That's possible to ensure by insisting on the scores running across the
> board.
Reply by Clifford Heath●November 21, 20212021-11-21
On 22/11/21 5:06 am, jlarkin@highlandsniptechnology.com wrote:
> On Sun, 21 Nov 2021 07:47:21 -0800 (PST), Lasse Langwadt Christensen
> <langwadt@fonz.dk> wrote:
>
>> søndag den 21. november 2021 kl. 02.47.11 UTC+1 skrev jla...@highlandsniptechnology.com:
>>> https://www.dropbox.com/s/do0k7ystcmmu1xg/T502A4.jpg?raw=1
>>>
>>
>> can you actually get a v-score made that doesn't go all the way across the board?
>
> Can't see why not. We'll buy from the board house that will.
Each snap must go right across the remaining board, or they can't snap
it. Any v-score will run a bit past its notional end-point, and mustn't
run into another board.
That's possible to ensure by insisting on the scores running across the
board.
Reply by ●November 21, 20212021-11-21
On Sun, 21 Nov 2021 07:47:21 -0800 (PST), Lasse Langwadt Christensen
<langwadt@fonz.dk> wrote:
>s�ndag den 21. november 2021 kl. 02.47.11 UTC+1 skrev jla...@highlandsniptechnology.com:
>> https://www.dropbox.com/s/do0k7ystcmmu1xg/T502A4.jpg?raw=1
>>
>
>can you actually get a v-score made that doesn't go all the way across the board?
Can't see why not. We'll buy from the board house that will.
It could be converted into slots if nobody will do it. That would give
me a clean edge on the right-most SMA. It's just harder to draw.
--
Father Brown's figure remained quite dark and still;
but in that instant he had lost his head. His head was
always most valuable when he had lost it.
Reply by ●November 21, 20212021-11-21
On 21 Nov 2021 12:05:19 GMT, Uwe Bonnes
<bon@hertz.ikp.physik.tu-darmstadt.de> wrote:
>jlarkin@highlandsniptechnology.com wrote:
>> https://www.dropbox.com/s/do0k7ystcmmu1xg/T502A4.jpg?raw=1
>>
>> The real action is in the upper-right, 0.8 square inches. I had to lay
>> that out myself because it's too hard to explain to anyone else.
>>
>> The Brat did the rest of the layout.
>>
>> Production wants the wings on the sides for fixturing. After the parts
>> are stuffed, we can lop them off.
>>
>
>How do you expect the rectengular outline in middle right to get produced?
The board house will route it out; radiuses are OK in the corners.
After assembly, we can cut through the v-scores to make the final
shape, a nearly square board with a rectangular cutout for the lower
cable.
Two of the SMA edge-launch connectors will be on a precise routed
edge. The one on the right will be on a cut-off v-score, so it won't
be a precise fit against the board edge and won't be a good
high-frequency match, but that's OK... it's a signal monitor with only
a 1 GHz requirement and no hard specs on signal beauty.
The next iteration:
https://www.dropbox.com/s/1nf2db5f7wb4xkz/T502A5.jpg?raw=1
The SMA connectors are now the Mueller microwave edge-launch parts,
pretty good without costing $40 each. For the best transition, the
pads have to be just at the edge of the board, marginally routed off.
The design review is tomorrow. Yuk.
--
Father Brown's figure remained quite dark and still;
but in that instant he had lost his head. His head was
always most valuable when he had lost it.