The Cyber-Spy.Com Usenet Archive Feeds Directly
From The Open And Publicly Available Newsgroup
This Group And Thousands Of Others Are Available
On Most IS NNTP News Servers On Port 119.
Cyber-Spy.Com Is NOT Responsible For Any Topic,
Opinions Or Content Posted To This Or Any Other
Newsgroup. This Web Archive Of The Newsgroup And
Posts Are For Informational Purposes Only.
From: Chuck Simmons
Organization: You jest.
X-Mailer: Mozilla 4.61 [en] (X11; U; Linux 2.0.33 i586)
Subject: Re: 1523 joints
References: <3DB5C12B.firstname.lastname@example.org> <3DB5F4D1.34AD32AD@webaccess.net>
Date: Thu, 24 Oct 2002 00:47:49 GMT
NNTP-Posting-Date: Wed, 23 Oct 2002 17:47:49 PDT
John Woodgate wrote:
> I read in sci.electronics.design that Chuck Simmons
> wrote (in <3DB68B8F.70B3F746@webaccess.net>)
> about '1523 joints', on Wed, 23 Oct 2002:
> >Our contractor does the board layout from a schematic I supply. He
> >creates the BOM from the schematic and submits the BOM and plots for
> >review. The assembler (his son) works from the BOM and the silk screen
> >on the board. The kits we give them are sorted by item number on the
> Sure, it sounds OK. BUT IT DOESN'T WORK, so you need to do something
> else. That's what I learned in Production 101 in my first long vac in
> 1956. It's just like simulation and breadboarding. Whatever the
> simulation says, if the breadboard doesn't work, you haven't got a
We are talking about short production runs. In the last two years, our
total production of our product demonstration board has been 22 boards,
10 rev A, 10 rev B and 2 rev E (the single rev C and rev D boards
delivered were scrapped after test). The rev E is waiting for my
approval to complete the other 8 ordered. I think we would have run rev
B longer (it is over a year old) but a customer request required pinout
changes on two of our chips.
We talked to a company recently that will do machine loading of all our
surface mount parts using optical recognition to verify actives and
direct measurement to verify Rs and Cs. The setup cost is about the same
as hand assembly cost for 10 boards. For our board, we would break even
at about 20 boards (our board always requires some hand assembly after
the surface mount parts are mounted. The company can work from the
gerber file and the BOM alone.
The problem is that boards are not a product for us. We don't sell them.
We give them away to customers with potential to buy revenue product.
Our expectation at the moment is that we need to give away no more than
five of the current rev and hope that we don't have to mess with pinout
... The times have been,
That, when the brains were out,
the man would die. ... Macbeth
Chuck Simmons email@example.com
Go Back To The Cyber-Spy.Com
Usenet Web Archive Index Of
The sci.electronics.design Newsgroup