My experience with exceedingly small parts is limited, but it felt to me like flux or such that was making the part stick to the manipulator.
Donald.
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----- Original Message -----
> From: "Steve" <steve65@...>
> To: "Homebrew PCBs" <Homebrew_PCBs@yahoogroups.com>
> Sent: Monday, October 24, 2011 8:05:23 AM
> Subject: Re: [Homebrew_PCBs] Components stick to tools
> Thanks all for the advice.
>
> I'm using Wiha 44523 and 44529 tweezers, which the Wiha web site lists
> as ESD safe and anti-magnetic. Not sure what anti-magnetic means. The
> dental pick is just "normal" steel as far as I can tell.
>
> I have one of those magnetize/demagnetize gadgets (made by Wiha I
> think)
> that you pass a screwdriver through one side to magnetize and the
> other
> side to demagnetize. I'll try passing the tweezers and dental pick
> through the demagnetize side and see what happens (this evening after
> work).
>
> Never gave much thought to SMD components such as resistors and
> capacitors having enough ferrous material in them to be attracted to a
> magnet. As well as IC's, they stick to the tools as well.
>
> Steve K8JQ
>
> On 10/24/2011 6:03 AM, Leon Heller wrote:
> > On 24/10/2011 02:19, Steve wrote:
> >> I've been placing some 0805 SMT components on PCB's this weekend.
> >> Use
> >> tweezers to place the component and a dental pick to fine tune its
> >> position on the board.
> >>
> >> Often times the component will stick to a leg of the tweezer or to
> >> the
> >> dental pick. Very annoying to get the component in the right spot
> >> and be
> >> unable to "let go" of it.
> >>
> >> What makes it stick? Anything to do to lessen the sticking effect
> >> of
> >> components to tools? I cleaned the tweezers and dental pick with
> >> alcohol, but to no avail.
> >
> > Perhaps the tools have become magnetised. I once used an
> > electromagnet
> > powered by AC to demagnetise a tool by placing it in contact and
> > slowly
> > withdrawing it from the field.
> >
> > Leon
>
>
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