Homebrew PCBs

I have one similar to that but with the Quad and SOIC tips.  Takes me
longer than 20 seconds to remove a 28 SOIC.  Haven't tried to remove a
QFP44 just yet.  Love to see a YouTube video of you removing a 200 pin
device in 20 seconds.  Be interesting to see what flow and temperature you
are using.  I'm always worried about making it too hot.

John

Automation Artisans Inc.
http://www.autoartisans.com/ELS/
Ph. 1 250 544 4950


> -----Original Message-----
> From: Homebrew_PCBs@yahoogroups.com
> [mailto:Homebrew_PCBs@yahoogroups.com] On Behalf Of Henry Liu
> Sent: Thursday, July 07, 2011 8:39 PM
> To: Homebrew_PCBs@yahoogroups.com
> Subject: Re: [Homebrew_PCBs] Re: Removing SMDs
>
>
> Those are not proper SMD heat guns:
> http://cgi.ebay.com/2-1-SMD-HOT-AIR-REWORK-SOLDERING-IRON-STAT
> ION-852D-/310315592931?pt=LH_DefaultDomain_0&hash=item4840402ce3
>
> Henry
>
> On Thu, Jul 7, 2011 at 8:32 PM, John Dammeyer
> <johnd@...>wrote:
>
> > **
> >
> >
> > Specifically which heat gun are you using?
> >
> > http://www.heat-guns.com/
> >
> > John
> >
> > Automation Artisans Inc.
> > http://www.autoartisans.com/ELS/
> > Ph. 1 250 544 4950
> >
> > > -----Original Message-----
> > > From: Homebrew_PCBs@yahoogroups.com
> > > [mailto:Homebrew_PCBs@yahoogroups.com] On Behalf Of Henry Liu
> > > Sent: Thursday, July 07, 2011 7:10 PM
> > > To: Homebrew_PCBs@yahoogroups.com
> >
> > > Subject: Re: [Homebrew_PCBs] Re: Removing SMDs
> > >
> > >
> > > I just squirt solder flux out of the syringe on all the pins,
> > > turn up the
> > > air gun to high and shoot hot air from the top and pick the
> > > part up with
> > > tweezers 20secs or so later. Hot air heats all the pads up
> > > at once. Solder
> > > flux isolates the area affected by the hot air. It's really
> > > simple and a
> > > hot air gun is around $100.
> > >
> > > A lot of smd parts have pads underneath such as thermal pads
> > > and qfn chips
> > > and these are also no problem with a hot air gun.
> > > Henry
> > >
> > > On Thu, Jul 7, 2011 at 6:45 PM, Donald H Locker
> > > <dhlocker@...>wrote:
> > >
> > > > **
> > > >
> > > >
> > > > I "recently" removed a 144-pin LQFP with XActo knife, iron
> > > and braid. If
> > > > you have pics or a video of removing such a critter with
> > > iron and hot air in
> > > > 20 sec, I'd live to see it. I spend the better part of 15
> > > minutes on that
> > > > part.
> > > >
> > > > Donald.
> > > > --
> > > > *Plain Text* email -- it's an accessibility issue
> > > > () no proprietary attachments; no html mail
> > > > /\ ascii ribbon campaign - <www.asciiribbon.org>
> > > >
> > > >
> > > > ----- Original Message -----
> > > > > From: "Henry Liu" <henryjliu@...>
> > > > > To: "Homebrew PCBs" <Homebrew_PCBs@yahoogroups.com>
> > > > > Sent: Thursday, July 7, 2011 8:38:54 PM
> > > > > Subject: Re: [Homebrew_PCBs] Re: Removing SMDs
> > > > > Hot air gun/soldering station combo is around $100 new
> > > off ebay and is
> > > > > probably the best solution.
> > > > >
> > > > > Using hot air and flux in syringe I can remove most
> SMD components
> > > > > including 200 pin qpfs in 20sec or less.
> > > > >
> > > > > Low melt solder is ok except it's still easier to use
> the hot air
> > > > > which has no cleanup.
> > > > >
> > > > > Henry
> > > > >
> > > > > On Thu, Jul 7, 2011 at 1:27 PM, Mark Mickelsen
> > > <msmickelsen@...>
> > > > > wrote:
> > > > > > Could you please post a link to the picture of the
> > > "forked soldering
> > > > > > iron
> > > > > > tip". I looked on site, but didn't see anything
> with the name
> > > > > > "Andrew" or
> > > > > > any cover pictures that looked like it. I'm probably
> > > blind, but I'd
> > > > > > like to
> > > > > > see the pictures.
> > > > > > Thanks,
> > > > > > Mark
> > > > > >
> > > > > > On Thu, Jul 7, 2011 at 8:24 AM, Andrew
> > > <a_wake@...> wrote:
> > > > > >
> > > > > >> **
> > > > > >>
> > > > > >>
> > > > > >> Two or three months ago I posted a picture of a
> > > "forked" soldering
> > > > > >> iron tip
> > > > > >> that I made -- I was asking if I had come up with
> > > something new, or
> > > > > >> merely
> > > > > >> re-invented the wheel. Not surprisingly, it was the
> > > latter ... but
> > > > > >> all the
> > > > > >> same, it is a GREAT tool for removing SMD devices. The only
> > > > > >> downside is that
> > > > > >> it is made to fit one particular profile. Since I have
> > > the copper
> > > > > >> and the
> > > > > >> machine shop, I'll probably eventually make a few
> > > other profiles to
> > > > > >> fit the
> > > > > >> other SMD components that I tend to use.
> > > > > >>
> > > > > >>
> > > > > >> --- In Homebrew_PCBs@yahoogroups.com, "Peter Leybourne"
> > > > > >> <peter.ley08@...>
> > > > > >> wrote:
> > > > > >> >
> > > > > >> > Somebody may have mentioned this.....
> > > > > >> > I saw somewhere an article with a soldering iron
> > > 'tip' extension
> > > > > >> > made in
> > > > > >> the
> > > > > >> > shape of a two pronged fork. Several extensions
> were made as
> > > > > >> > needed for
> > > > > >> > different size/shape components.
> > > > > >> >
> > > > > >> > Peter
> > > > > >> > MM5PSL
> > > > > >> >
> > > > > >>
> > > > > >>
> > > > > >>
> > > > > >
> > > > > >
> > > > > > [Non-text portions of this message have been removed]
> > > > > >
> > > > > >
> > > > > >
> > > > > > ------------------------------------
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> > > > > >
> > > > >
> > > > >
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> > > > >
> > > > > Be sure to visit the group home and check for new Links,
> > > Files, and
> > > > > Photos:
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> > > > >
> > > >
> > > >
> > > >
> > >
> > >
> > > [Non-text portions of this message have been removed]
> > >
> > >
> > >
> > > ------------------------------------
> > >
> > > Be sure to visit the group home and check for new Links,
> > > Files, and Photos:
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> > >
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> > >
> >
> >
> >
>
>
> [Non-text portions of this message have been removed]
>
>
>
> ------------------------------------
>
> Be sure to visit the group home and check for new Links,
> Files, and Photos:
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>
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