OT soldering

OT soldering

Post by Kell » Sat, 02 Jan 1999 04:00:00



one more slightly off-topic question:  can a solder gun be used in place
of a torch setup where silver soldering is concerned?  
--
Kelly  <who is afraid of setting table/curtains/cats on fire with a
torch>
 
 
 

OT soldering

Post by Robert Houghtalin » Sat, 02 Jan 1999 04:00:00


Quote:

> one more slightly off-topic question:  can a solder gun be used in place
> of a torch setup where silver soldering is concerned?
> --
> Kelly  <who is afraid of setting table/curtains/cats on fire with a
> torch>

No, Silver solder melts at too high a temp (1160 to 1616 F) for a
soldering gun.
--
Robert Houghtaling
Sculpture and Design
P.O. Box 256
Los Olivos, CA 93441
1-800-305-6779-X99,  FAX (805) 688-0341


 
 
 

OT soldering

Post by Kell » Sat, 02 Jan 1999 04:00:00


Quote:

> No, Silver solder melts at too high a temp (1160 to 1616 F) for a
> soldering gun.

rats...that's what I was afraid of.  I wonder if they make itsy bitsy
torches for eensy beensy areas so my hands can handle it.  I guess there
are ways around the problem.  If I'm going to combine PMC with PC, I
guess I can just plan on having PC in a strategic spot on the back of
the item if I'm making pins.  Gluing metal to metal is soooo tacky. <no
pun intended>

Kelly, who is nothing if not determined.

 
 
 

OT soldering

Post by Polycla » Sun, 03 Jan 1999 04:00:00


There is in the stores two devices you might look into. One is a torch about
the size of a large pencil. There is anothe one offered by Radio Shack (or was)
that is a real propane/oxigen torch. It fits in the palm of your hand. The
first is refiled from a butain lighter canister. the second requires two
special CO2 sized cartreages.
Then the second alternitive is that they make some special low temp melting
'solders' for silver and bronze. The bond will not be as good as a true high
temp weld but it might still work.

OH. and they also make a silver (colored) epoxy.


Remove the 'NOzSPAM' to email me.
http://members.aol.com/echo01/

 
 
 

OT soldering

Post by RSPIE » Sun, 03 Jan 1999 04:00:00


Kelly,

If you haven't yet, you might start reading the Jewelry newsgroup.  I used to
read it all the time, and they answered a lot of the questions you have - like
about soldering torches and kilns, etc.

Randi

 
 
 

OT soldering

Post by ZXjudi » Wed, 06 Jan 1999 04:00:00


MicroMark makes a tiny torch that runs on butane (refill with cigarette lighter
butane), that should give you the temperaturesyou want.

They have a website, but I don't have the catalog (gone into an alternate
universe whenever I want something specific  :-)  ).

Good luck, ZXJudith

 
 
 

OT soldering

Post by Eric » Wed, 06 Jan 1999 04:00:00


Kelly-
I'll try to help here, as I work both in silver and in polyclays.
For any true silver soldering (using silver solder) you need a torch
of some sort. You can get an inexpensive one at Radio Shack starting
at about $15 for a butane one. These are _not_ precision tools, and
tend to overheat what you are working on, but with practice can do a
decent job soldering. The least expensive torches that I would
recommend are around $60-$75 (the "Blazer" micro torch)

You don't want to use these torches anywhere around your polyclays, as
they will cause them to burn quickly, releasing toxic fumes. I've
actually blown up stones with these (on accident)- they get very hot.

You'll also need a "pickle" like Sparex, which is basically a mild
acid bath to remove the oxides that form on the silver during the
soldering, and also a flux to help the solder flow.

You can use a soldering iron to attach two pieces of silver (using low
melting lead solder, available at any hardware store), but the bond
isn't as strong, and the solder is _very_ obvious.

Quick question:

Quote:
> If I'm going to combine PMC with PC, I
>guess I can just plan on having PC in a strategic spot on the back of
>the item if I'm making pins.  

How do you plan on combining them?
You cannot mix them, as the PMC needs to be kiln fired at fusing
temperature for the metal (I don't believe a torch alone will do it-
even if you wanted to stand there for the half hour or so it takes for
the fusion to take place)
Have you thought of using a pre-made silver bezel to put the polyclay
in on your PMC piece? You can get these at any jewelry supply (or Rio
Grande if you have a resale license).
It might make your life easier!

Hope this helps some.

Eric

"Tolerance implies a respect for another person, not because he is wrong or even because he is right, but because he is human"
John Cogley

 
 
 

OT soldering

Post by Kell » Wed, 06 Jan 1999 04:00:00


Quote:

> Kelly-
> I'll try to help here, as I work both in silver and in polyclays.
> For any true silver soldering (using silver solder) you need a torch
> of some sort. You can get an inexpensive one at Radio Shack starting
> at about $15 for a butane one. These are _not_ precision tools, and
> tend to overheat what you are working on, but with practice can do a
> decent job soldering. The least expensive torches that I would
> recommend are around $60-$75 (the "Blazer" micro torch)

I just ordered a soldering pen from MicroMark for $24.  Looks like what
my fingers can handle.  I was tempted to get the one that stands upright
but I'd just knock the thing down... <g>

Quote:
> > If I'm going to combine PMC with PC, I
> >guess I can just plan on having PC in a strategic spot on the back of
> >the item if I'm making pins.

> How do you plan on combining them?
> You cannot mix them, as the PMC needs to be kiln fired at fusing
> temperature for the metal (I don't believe a torch alone will do it-
> even if you wanted to stand there for the half hour or so it takes for
> the fusion to take place)

Ah, but you forget there's the other direction...  make the pin, then
add the PC!  I doubt much will happen to the silver in a 265 F. kitchen
oven. <g>

Quote:
> Have you thought of using a pre-made silver bezel to put the polyclay
> in on your PMC piece?

That's too much like cheating! <g>  I suspect it would be fairly
obvious, too, since PMC fires to .999 and sterling is somewhat different
in appearance. If I'm putting in a cab, I'd rather GLUE it in!
 
 
 

OT soldering

Post by Cynthia Morga » Wed, 06 Jan 1999 04:00:00


Kelly,

Before you start soldering PMC you might want to check out www.pmclay.com.
Look in their Tech Tips, Spring 1998, Vol. 1 No. 3, for a piece by J. Fred
Woell on exactly this subject. It seems PMC is more porous than typical
silver and may or may not take soldering well, depending on a number of
factors.

I've found this site useful on a number of occasions; I think it's connected
with the excellent newsletter Rio sponsors for its PMC customers.

Good luck!

Cynthia