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Posted by Mr. INTJ on August 28, 2008, 9:55 pm
I started doing hobby electronics again fairly recently, and recycling/
scavenging is a big draw for me. As it happens, my company throws away
lots of useful stuff, and over the past year I've brought home lots of
circuit boards with various useful parts on them.
I've got a solder sucker and solder wick/braid, but components with
more than two or three leads continue to be a problem for me. I have a
little soldering station with a soldering iron, but I've been thinking
that I probably need some hot tweezers or a heat gun of some kind.
Most of the stuff that I'm recovering from these boards are through-
hole components ... I haven't graduated to SMT-at-home just yet.
I don't mind springing for the right tools, but I don't want to buy
something only to find that it still isn't very effective.
I'd like to hear from the folks that do a significant amount of this
kind of thing (desoldering), and which tools/methods they favor.
Thanks!
Mr. INTJ
San Diego, CA
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Posted by Stephen J. Rush on August 28, 2008, 10:12 pm
On Thu, 28 Aug 2008 18:55:12 -0700, Mr. INTJ wrote:
> I started doing hobby electronics again fairly recently, and recycling/
> scavenging is a big draw for me. As it happens, my company throws away
> lots of useful stuff, and over the past year I've brought home lots of
> circuit boards with various useful parts on them.
>
> I've got a solder sucker and solder wick/braid, but components with more
> than two or three leads continue to be a problem for me. I have a little
> soldering station with a soldering iron, but I've been thinking that I
> probably need some hot tweezers or a heat gun of some kind. Most of the
> stuff that I'm recovering from these boards are through- hole components
> ... I haven't graduated to SMT-at-home just yet.
>
> I don't mind springing for the right tools, but I don't want to buy
> something only to find that it still isn't very effective.
>
> I'd like to hear from the folks that do a significant amount of this
> kind of thing (desoldering), and which tools/methods they favor.
It's been a while, but I remember an Ungar screw-in tip that hit all the
pins of a 16-pin DIP at once. Usually though, a spring-loaded solder
sucker would remove almost all of the solder from each pin, leaving such
a small area of contact that it could be broken with a sharp probe. For
cheap SSI parts, a heat gun is probably best, though I never had one.
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Posted by Eeyore on August 28, 2008, 10:34 pm
"Mr. INTJ" wrote:
> I started doing hobby electronics again fairly recently, and recycling/
> scavenging is a big draw for me. As it happens, my company throws away
> lots of useful stuff, and over the past year I've brought home lots of
> circuit boards with various useful parts on them.
> I've got a solder sucker and solder wick/braid, but components with
> more than two or three leads continue to be a problem for me. I have a
> little soldering station with a soldering iron, but I've been thinking
> that I probably need some hot tweezers or a heat gun of some kind.
> Most of the stuff that I'm recovering from these boards are through-
> hole components ... I haven't graduated to SMT-at-home just yet.
> I don't mind springing for the right tools, but I don't want to buy
> something only to find that it still isn't very effective.
> I'd like to hear from the folks that do a significant amount of this
> kind of thing (desoldering), and which tools/methods they favor.
Well there's no substitute for a de-solder tool (manual or vacuum). If you
have a Weller TCP, I think there's an accesory for it. There's still a
knack to it though.
Graham
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Posted by GregS on August 29, 2008, 8:44 am
>"Mr. INTJ" wrote:
>> I started doing hobby electronics again fairly recently, and recycling/
>> scavenging is a big draw for me. As it happens, my company throws away
>> lots of useful stuff, and over the past year I've brought home lots of
>> circuit boards with various useful parts on them.
>> I've got a solder sucker and solder wick/braid, but components with
>> more than two or three leads continue to be a problem for me. I have a
>> little soldering station with a soldering iron, but I've been thinking
>> that I probably need some hot tweezers or a heat gun of some kind.
>> Most of the stuff that I'm recovering from these boards are through-
>> hole components ... I haven't graduated to SMT-at-home just yet.
>> I don't mind springing for the right tools, but I don't want to buy
>> something only to find that it still isn't very effective.
>> I'd like to hear from the folks that do a significant amount of this
>> kind of thing (desoldering), and which tools/methods they favor.
>Well there's no substitute for a de-solder tool (manual or vacuum). If you
>have a Weller TCP, I think there's an accesory for it. There's still a
>knack to it though.
>Graham
I have all the tools to do this, but since I hardly use it the Weller sucker
it gets all messed up leaving it on. Its a major effort to reclean the tip.
Regardless, the recommended method of removal is to cut all
the pins first, and removing many components with intact leads is a chore.
I can't live without solder wick, fresh, or freshly refluxed. Get a liquid flux
pen
and apply to pins regardless of tool.
greg
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Posted by on August 29, 2008, 12:03 am
> I started doing hobby electronics again fairly recently, and recycling/
> scavenging is a big draw for me. As it happens, my company throws away
> lots of useful stuff, and over the past year I've brought home lots of
> circuit boards with various useful parts on them.
> I've got a solder sucker and solder wick/braid, but components with
> more than two or three leads continue to be a problem for me. I have a
> little soldering station with a soldering iron, but I've been thinking
> that I probably need some hot tweezers or a heat gun of some kind.
> Most of the stuff that I'm recovering from these boards are through-
> hole components ... I haven't graduated to SMT-at-home just yet.
> I don't mind springing for the right tools, but I don't want to buy
> something only to find that it still isn't very effective.
> I'd like to hear from the folks that do a significant amount of this
> kind of thing (desoldering), and which tools/methods they favor.
> Thanks!
> Mr. INTJ
> San Diego, CA
Use the solder wick on multipin items just wick the bottom of the
board and then wiggle the pins to be sure that they are loose. When
you are using surface mount multipin items use the solder wick on top
of the pins and then touch each one with the iron tip and lift the pin
off the surface with a small tool. You must be careful not to over
heat the pin... you know where it goes and the over heating of the
connector wires from the pin to the chip element is a very bad
thing.
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> scavenging is a big draw for me. As it happens, my company throws away
> lots of useful stuff, and over the past year I've brought home lots of
> circuit boards with various useful parts on them.
>
> I've got a solder sucker and solder wick/braid, but components with more
> than two or three leads continue to be a problem for me. I have a little
> soldering station with a soldering iron, but I've been thinking that I
> probably need some hot tweezers or a heat gun of some kind. Most of the
> stuff that I'm recovering from these boards are through- hole components
> ... I haven't graduated to SMT-at-home just yet.
>
> I don't mind springing for the right tools, but I don't want to buy
> something only to find that it still isn't very effective.
>
> I'd like to hear from the folks that do a significant amount of this
> kind of thing (desoldering), and which tools/methods they favor.