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From: "Ken Taylor"
Subject: Re: 1523 joints
Date: Wed, 23 Oct 2002 16:13:24 +1300
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"Christopher R. Carlen" wrote in message
> Ken Taylor wrote:
> > Hi Christopher. Without having too much of a dig at you, should you have
> > considered the manufacture stage during the design stage? Is the board
> > suited to reflow? If it really has to be hand-assembled and soldered you
> > need to take a look at a few assembly shops and their work to make
> > happy with their output. Outsourcing can work but it takes a fair bit of
> > preparation, investigation and ultimately confidence on both sides. Can
> > provide a fully assembled one which you *are* happy with so they have a
> > model? What about if you maybe only get one side done externally,
> > the fiddlier bit on the 'non-active' side done internally, so that maybe
> > automated process can be used for the bulk of the joints.
> > What are the chances though of taking one or more of your lab tech's
> > your wing' and bringing them up to your standard? They have to learn
> > somewhere, and if they currently are not up to spec then here's your
> > to improve things! :)
> > Ken
> Thank you for your response. I will try to respond to all your valuable
> I didn't consider manufacturing processes because I planned to make a
> small quantity only, about 4-10 or so. For this and for most of the
> jobs I do this is the case, and so everything I do has been hand
> assembled. For that reason as well, I know very little about
> manufacturing requirements or processes, having little need to know
> about them. Now however, I am interested in learning if a manufacturing
> route might save me time. That would require that all the effort needed
> to provide the manufacturer with everything they need to do the job,
> works out to less effort than if I just do it myself.
> I would be perfectly willing to hear your criticisms of this attitude,
> but I have become somewhat demanding when it comes to standards. Thus I
> think that in a leading research establishment a tech. who wants to do
> something new should figure it out on his/her own, then present their
> willingness to apply it to a project or even volunteer to solve some
> problem, and then simply show up one day with the results in order to
> prove their competence, as opposed to sinking the resource of time,
> which is our most valuable commodity, by having another tech. train
> them. That's what I've done. That's what the scientists have to do.
> Nobody tutors them on tensor calculus. They just open a textbook, and
> learn it. Then they use it.
> Thanks again for the input, and...
> Good day!
I didn't realise that he tech's were mechanical, not electrical/electronic.
That can make it difficult. However as another poster commented they may
still react well to the challenge of the new and different!
It appears you have a set of options:
1/ you could do it all yourself, which it sounds like you don't have the
resources to do;
2/ you could oversee someone in-house to do it, which appears to be a
resource (person) problem also;
3/ you could outsource it with a sample provided for guidelines; or
4/ you could redesign for manufacturing ease.
Everything else is interesting, but at the end of day, not important to the
decision. Are you able to redesign for example? Maybe by placing all the
connectors and LED's onto another board which would be much simpler and
could mate via some inter-board connectors (maybe even directly onto the one
you've already designed - instead of mounting the LED's and BNC's and so
forth on the main board, mount connectors which mate with another board
which actually has those components on it). In this way you can divide up
the task into the high-density soldering problem and the finicky mounting
problem, and give the two tasks to people who can work best with each, and
can utilise the PCB you've already designed.
Either that, or gain some trust in an outsourcing place. Options 3 & 4 seem
the only ones really likely at this stage.
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