I suspect solder is too malleable for a ball mill to crumble. Hot inert-gas spray? I'd probably start with carbide paper/Wet-orDry abrasive sheets. Maybe just knife-scraping the surface with uneven pressure could make small enough particles.
Donald.
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----- Original Message -----
> From: "Stefan Trethan" <stefan_trethan@...>
> To: "Homebrew PCBs" <Homebrew_PCBs@yahoogroups.com>
> Sent: Sunday, January 13, 2013 7:47:15 AM
> Subject: Re: [Homebrew_PCBs] No HASL
> Come on now Rick, you can't possibly be this cheap?
> Do you really want to have lead dust everywhere?
>
> I suppose a ball mill might do the job.
>
> ST
>
> On Sun, Jan 13, 2013 at 1:45 PM, Rick Sparber <rgsparber@...>
> wrote:
> > But how do I take the solder I have on hand and grind it up to make
> > this
> > kind of flux+solder paste?
> >
> > Rick
> >
>
>
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