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'Mass production PIC soldering'
1999\11\17@191812 by Keith Causey

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Hello all, I am working an a project that involves that involves medium
scale (approx. 100 pieces) of an art piece (jewelry that moves) and I need a
soldering iron that is suitable for such an endevour. Has anyone here had
experience with such a project?
Thanks in advance
Keith Causey
spam_OUTffightTakeThisOuTspamgeocities.com

1999\11\17@200227 by Mark Willis

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Keith Causey wrote:
>
> Hello all, I am working an a project that involves that involves medium
> scale (approx. 100 pieces) of an art piece (jewelry that moves) and I need a
> soldering iron that is suitable for such an endevour. Has anyone here had
> experience with such a project?
> Thanks in advance
> Keith Causey
> .....ffightKILLspamspam@spam@geocities.com

What exactly do you need the soldering iron to DO that is unusual,
Keith?  That'd help people help you <G>  What are you soldering to
what?  60/40 solder, or silver solder, or ???

 Mark

1999\11\17@203834 by Keith Causey

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I am soldering SMT devices to a PC board. The pad spacing can be as small as
25 mils. The solder composition is 60/40.

> Keith Causey wrote:
> >
> > Hello all, I am working an a project that involves that involves medium
> > scale (approx. 100 pieces) of an art piece (jewelry that moves) and I
need a
> > soldering iron that is suitable for such an endevour. Has anyone here
had
{Quote hidden}

1999\11\17@222116 by Mark Willis

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Are you soldering parts on one side, or both sides, of the PC board?  If
both, a Hot Air pencil, the "Wave" tip by Pace, or perhaps a really good
soldering iron, if only one side, also can do an oven (slow controlled
temperature curve, these are pricey unless you're up to making your own
controller for this.)

Also can have someone with the proper gear do this for you, if you don't
want to spend lots of money to do this.

There's a lot to be said for 63/37 solder IMO, it's a little pricier but
doesn't DO cold solder joints, basically, which is a GOOD thing.
Nothing wrong with 60/40, of course <G>

I'm sure that more info on what SMT device packages, PCB size, etc.
would give us a better idea of how to do this "best", sounds like a hot
air pencil or the wave tip may be good for your situation (I doubt you
want to spend $1000ish ($10 per PC board) & go buy a Metcal "Talon", but
if you do & want rid of it after, I could use a used Talon rig when
you're done with it <G>)

 Mark

Keith Causey wrote:
{Quote hidden}

--
I do small package shipping for small businesses, world-wide.

1999\11\18@013655 by Keith Causey

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I think that eventually we will be soldering to both sides. The size of the
board is PC/104 compatible which is about 3.5" x 3.75". The ic types are
soic versions of HCMOS 74XXX series devices with a smattering of PLCC 's and
QFP's. The smallest pin spacings on the chips we will use is 25 mils.
Thank you
Keith Causey.

{Quote hidden}

small as
> > 25 mils. The solder composition is 60/40.
> >
> > > Keith Causey wrote:
> > > >
> > > > Hello all, I am working an a project that involves that involves
medium
> > > > scale (approx. 100 pieces) of an art piece (jewelry that moves) and
I
> > need a
> > > > soldering iron that is suitable for such an endevour. Has anyone
here
{Quote hidden}

1999\11\18@105336 by Don Hyde

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We produce small prototype runs here (seldom over 50 units) entirely by
hand, using Weller temperature-controlled irons, teensy tips, magnifying
lenses, and technicians with lots of experience.  All but the last can be
had from the Digikey catalog.  It can be done if you're careful and patient.

There are lots of board houses out there, but they usually want to produce
in larger lots.

If you need all 100 next week, you'd better hire someone to do it for you,
but if you're thinking cottage industry and will be moving the 100 over the
period of a year, you could just do it by hand.

> {Original Message removed}

1999\11\18@110805 by eplus1

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I have a SMD Soldering FAQ at:

http://204.210.50.240/techref/default.asp?url=smds.htm

That may be of assistance. I use an old internally regulated Wahl Iso-Tip
and other have used everything from huge automotive welding irons (I'm not
kidding!) to $1K professional soldering stations so I think it has more to
do with practice and developing a method that works for you.

James Newton jamesnewtonspamspam_OUTgeocities.com phone:1-619-652-0593
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{Original Message removed}

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