Date: Wed, 14 Sep 2005 09:12:17 -0400

Author: Michael Timmins

Subject: Re: Soldering Stations ??

Post:

And here I thought that it was only useful to prove that you can bend spoons
with your mind!
Thanks,
Mike

On Wednesday 14 September 2005 07:40 am, Gerald Zani wrote:
> Mike,
>
> Woods metal is, like Chuck said, a low melting point solder like
> indium. In contains tin, lead, cadmium and bismuth.
>
> Low melting point solder has uses when you cannot use high heat or when you
> need to cool something quickly. It is used by plumbers for pipe bending
> and machinists for making tool holders because it cools and anneals
> quickly.
>
> I've used it to make solder contacts to fine gold wire on silicon wafers:
> http://www.physics.brown.edu/physics/demopages/Demo/em/demo/5m1063%20.htm
>
> I've also made some homemade hall effect sensors with it. This is why I
> use on a solder iron with variable heat control.
>
> The low temp solder is so soft that at room temps a fine wire can be pushed
> into it. It will make contact without the need for any heat or just a
> small amount from the solder iron. Lead solder melts at around 600-750 C
> but woods metal and indium solder will melt at temps as low as 200 C or
> less. -- JZ
>
> At 04:14 PM 9/13/2005, you wrote:
> >I hope you don't mind me asking, but what would you solder with woods
> > metal? Or maybe I'm really interested in why you would solder anything
> > with woods metal? I've never heard of people soldering with woods metal.
> >Just curious
> >Mike
> >
> >On Tuesday 13 September 2005 03:02 pm, Gerald Zani wrote:
> > > I vote for the Weller.
> > > I have the fine tip for doing surface mount contacts.
> > > The variable temp is particularly helpful when soldering with woods
> > > metal. --JZ
> > >
> > > At 01:49 PM 9/13/2005, you wrote:
> > > >I'm looking for recommendations for some reasonably priced soldering
> > > >'stations'.
> > > >Plated tips are required.
> > > >Power in the 20 watt range.
> > > >Variable temp is not required.
> > > >
> > > >any suggestions from this august group (oops, now a september group?)
> > > > ;-)
> > >
> > > Gerald Zani e-mail: Gerald_Zani@brown.edu
> > > Manager of Demonstrations phone: (401) 863-3964
> > > Department of Physics FAX: (401) 863-2024
> > > Brown University Providence, RI 02912-1843 USA
> > >
> > > http://www.physics.brown.edu/physics/demopages/demo/
> > > http://www.physics.brown.edu/physics/userpages/staff/Gerald_Zani/index.
> > >html
> > >
> > > Do a little more of that work which you have confessed to be good,
> > > Which you feel that society and your most Just Judge rightly demand of
> > > you. Cultivate the tree which you have found to bear fruit in your
> > > soil. If you have any experiments you would like to try, try them.
> > > Now's your chance.
> > >
> > > Henry David Thoreau, Journal entry, 1850.
> >
> >--
> >Mike Timmins
> >University of Virginia
> >Acadamic Support Supervisor
> >
> >email: mat3q@virginia.edu
> >phone: (434) 924-6800
> >mail address:
> >382 McCormick Rd
> >Charlottesville, VA 22904
>
> Gerald Zani e-mail: Gerald_Zani@brown.edu
> Manager of Demonstrations phone: (401) 863-3964
> Department of Physics FAX: (401) 863-2024
> Brown University Providence, RI 02912-1843 USA
>
> http://www.physics.brown.edu/physics/demopages/demo/
> http://www.physics.brown.edu/physics/userpages/staff/Gerald_Zani/index.html
>
> Do a little more of that work which you have confessed to be good,
> Which you feel that society and your most Just Judge rightly demand of you.
> Cultivate the tree which you have found to bear fruit in your soil.
> If you have any experiments you would like to try, try them.
> Now's your chance.
>
> Henry David Thoreau, Journal entry, 1850.

--
Mike Timmins
University of Virginia
Acadamic Support Supervisor

email: mat3q@virginia.edu
phone: (434) 924-6800
mail address:
382 McCormick Rd
Charlottesville, VA 22904
From cablem@wfu.edu Wed Sep 14 10:35:57 2005

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