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From: "Christopher R. Carlen"
Subject: Re: 1523 joints
Date: Wed, 23 Oct 2002 07:56:48 -0700
Organization: Sandia National Laboratories, Albuquerque, NM USA
NNTP-Posting-Date: Wed, 23 Oct 2002 14:55:46 +0000 (UTC)
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red rover wrote:
> I agree with several of Ken's observations.
> It certainly would be easier if the design had considered
> manufacurability. Can you open up the holes on the panel
> to give you more tolerance on the BNC and LED placement?
I will be considering doing that, but that could create different
problems, as the panel will likely be CNC punched, and they can use a
standard punch for 0.5", but I'm not sure what the next increment is. I
don't know if they have 0.55" or 33/64", which would do the trick.
I'm probably going to be incurring additional tooling charges on this
panel anyway because I want to get some D-sub punching and counterbored
holes put in. I'll have several options quoted, and then see how much I
want to spend.
> If it is more of a vertical thing you may need a small jig.
> Your quantities are so small you need to talk to the shop to see
> if they are willing to give you a good hand-assembly person
> (you provide the panel if required) and see what it will cost.
Yes, I would provide them with parts, PCBs, panels if needed, and a model.
> Be wary of your comments about your own techs or feelings since you are
> not anonymous and they may read this NG. Some may surprise
> you if you present them with the challenge but few react well to
> criticism (most people don't).
Indeed. Perhaps I was a bit haughty. But my intention isn't really to
criticise the techs. There are techs who are good at what they do. I
would look as bumbling a fool if you put me in a machine shop as a
machinist would look at an electronics test bench.
Most of my criticism was aimed at the idea of trying to "over adapt"
techs., by applying them to tasks way outside of their fields of expertise.
But it is still true that there is a wide spectrum of degrees to which a
tech. or just people in general put their whole heart and soul, so to
speak, into their work and the many aspects with which that attitude can
manifest itself, to the other end of the spectrum where people don't
care so much and minimize their effort wherever possible.
I have usually been criticized in the process of my work at other jobs
for being very slow. But then when I offered the final product, it was
highly praised. That just means that someone like me should do a
certain kind of work--perfectionist, neurotic attention to detail type
work that would drive most people batty, and for which the value is
placed on the quality of final result, and it is acceptible for it to be
time consuming. Fortunately, in a research environment, that is a very
appropriate temperament in many instances.
In other instances, someone who just cranks out reasonable quality work
in an expedient manner is the best match for the task.
> Your master builder may feel he made
> his bed and now he must lie in it (ie: he doesn't want to come back to the
> old job) but if you are not satisfied with what the contractors offer maybe
> you could give him a contract to do the work. This might be a win/win
> situation. You get the man you want/trust. The master builder doesn't feel
> he's admitting he made a mistake in leaving, instead he sees that you admit
> you're having such time replacing him you have to contract him back.
I wasn't clear enough, and failed to indicate that he really didn't
leave. He transfered to another dept. So he's really not available for
contracting. There is a slim chance that his work load is thin however,
so perhaps I'll give him a ring and he might be interested in doing some
of this. Also, considering that he might like to have a copy of the
design for his own labs. I'll see what might be possible here.
Thank you for your comments!
Christopher R. Carlen
Principal Laser/Optical Technologist
Sandia National Laboratories CA USA
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