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From: Jim Yanik on 26 Jan 2010 08:49
David Harmon <source(a)netcom.com> wrote in
news:NLadnY3EpLWxFcPWnZ2dnUVZ_oKdnZ2d(a)earthlink.com:

> On Mon, 25 Jan 2010 18:28:20 -0800 in sci.electronics.design, John
> Larkin <jjlarkin(a)highNOTlandTHIStechnologyPART.com> wrote,
>>The SP200 series doesn't include fork tips for desoldering
>>surface-mount stuff, so I figure I can buy some wide chisel tips and
>>dremel them into forks.
>
> I assume the tips are plated. If you dremel them, the areas without
> plating would deteriorate rapidly.
>

I saw a guy modify an old (Weller?) iron that took 6-32 screw-in tips;
he made his own surface mount tips with copper from a copper pipe and a 6-
32 screw.Not temp-controlled,but it did the job.

--
Jim Yanik
jyanik
at
localnet
dot com
From: MooseFET on 26 Jan 2010 09:22
On Jan 25, 6:28 pm, John Larkin
<jjlar...(a)highNOTlandTHIStechnologyPART.com> wrote:
> On Mon, 25 Jan 2010 18:14:31 -0800 (PST), MooseFET
>
> <kensm...(a)rahul.net> wrote:
> >On Jan 25, 5:27 pm, John Larkin
> ><jjlar...(a)highNOTlandTHIStechnologyPART.com> wrote:
> >> Not is the web site silly fluff, the "contact" email address bounces.
>
> >> I want to buy some tips for my SP200 soldering station, and they offer
> >> me not a clue.
>
> >> John
>
> >Try looking on Digikey's web site.  They sell the tips.
>
> >http://www.okinternational.com/binary/catalogs/Metcal%20Catalogue%202...
>
> >Gets you that catologue
>
> Cool. Thanks. I couldn't find that on their web site.
>
> The SP200 series doesn't include fork tips for desoldering
> surface-mount stuff, so I figure I can buy some wide chisel tips and
> dremel them into forks.

I desolder with just the conical tip. The trick is to have enough
thermal mass
of solder on the two side and a fast action with the iron back and
forth between
the two sides. It junks the part but that is ok on resistors.

For things with many legs I use the heater that warms the board and
the magic
desoldering metal. It is slow but never harms the PCB material even
doing a very
big TQFP.

>
> John

From: John Fields on 26 Jan 2010 11:16
On Mon, 25 Jan 2010 17:27:04 -0800, John Larkin
<jjlarkin(a)highNOTlandTHIStechnologyPART.com> wrote:

>
>
>Not is the web site silly fluff, the "contact" email address bounces.
>
>I want to buy some tips for my SP200 soldering station, and they offer
>me not a clue.

---
http://www.metcal.com/wtb

JF
From: John Larkin on 26 Jan 2010 11:39
On Tue, 26 Jan 2010 13:43:12 GMT, Jan Panteltje
<pNaonStpealmtje(a)yahoo.com> wrote:

>On a sunny day (Mon, 25 Jan 2010 18:28:20 -0800) it happened John Larkin
><jjlarkin(a)highNOTlandTHIStechnologyPART.com> wrote in
><imksl5l57qq70plt6h662p86kf5e2udlbl(a)4ax.com>:
>
>>The SP200 series doesn't include fork tips for desoldering
>>surface-mount stuff, so I figure I can buy some wide chisel tips and
>>dremel them into forks.
>>
>>John
>
>That destroys the plating no?

In the machined notch, sure. I'd only use this tip for a few minutes
per year, just to remove surfmount resistors and caps.

Metcal says their tips can be sanded down to bare iron and retinned,
so possibly the tip is solid iron. In that case, dremeling would do no
harm. If it's just iron plating, well, I'd lose the tinning in the
dremeled notch, which is fine by me.

John


From: John Larkin on 26 Jan 2010 11:41
On Tue, 26 Jan 2010 06:22:23 -0800 (PST), MooseFET
<kensmith(a)rahul.net> wrote:

>On Jan 25, 6:28�pm, John Larkin
><jjlar...(a)highNOTlandTHIStechnologyPART.com> wrote:
>> On Mon, 25 Jan 2010 18:14:31 -0800 (PST), MooseFET
>>
>> <kensm...(a)rahul.net> wrote:
>> >On Jan 25, 5:27 pm, John Larkin
>> ><jjlar...(a)highNOTlandTHIStechnologyPART.com> wrote:
>> >> Not is the web site silly fluff, the "contact" email address bounces.
>>
>> >> I want to buy some tips for my SP200 soldering station, and they offer
>> >> me not a clue.
>>
>> >> John
>>
>> >Try looking on Digikey's web site. �They sell the tips.
>>
>> >http://www.okinternational.com/binary/catalogs/Metcal%20Catalogue%202...
>>
>> >Gets you that catologue
>>
>> Cool. Thanks. I couldn't find that on their web site.
>>
>> The SP200 series doesn't include fork tips for desoldering
>> surface-mount stuff, so I figure I can buy some wide chisel tips and
>> dremel them into forks.
>
>I desolder with just the conical tip. The trick is to have enough
>thermal mass
>of solder on the two side and a fast action with the iron back and
>forth between
>the two sides. It junks the part but that is ok on resistors.

I do that, but it's a nuisance and doesn't work for some geometries,
like a lot of copper or a via that's stealing heat. A fork tip would
be great, to desolder both sides at once.

John

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