Kevin beat me to my standard answer.  I hardly use liquid anymore.

KE

On Mon, Apr 8, 2019 at 12:14 PM Kevin Foley  wrote:

> John,
>
> For de-rusting I like the Klingspor abrasive blocks.  Firm rubber with
> embedded abrasive particles. IIRC they call them hand blocks or abrasers.
> They can be cut to shapes as needed with a utility knife to get into tight
> spots.  It might allow you to leave the wire wheel for just the tightest of
> spots.
>
> Kevin
>
>
> > On Apr 8, 2019, at 2:38 PM, John Ruth  wrote:
> >
> > GG’s
> >
> > Last Tuesday’s morning Flea Mkt. yielded a seriously-rusted Starrett 140
> 10” hacksaw frame.  Note well that this is NOT the current Starrett 140
> with the closed D-Handle, but rather an old straight-handle hacksaw frame.
> >
> > The blade attachment points have a clever spring-loaded lock to prevent
> the blade from becoming dislodged.
> >
> > The spring-loaded plungers are free to move, and work perfectly. The
> exposed parts of the attachment points are rusty.
> >
> > My question for the Porch is “how to de-rust the frame and the
> attachment points without killing the internal springs, which are captive
> inside a riveted housing.
> >
> > Electrolyzing springs yields “things that go “snick” in the night.” (TM
> of some unknown Porch dweller.)
> >
> > Either Citric or Phosphoric Acid would imperil the springs...
> >
> > Unless the Porch can come up with an idea, I think it will have to be
> done with a tiny wire wheel.
> >
> > John Ruth
> > Sent from my iPhone
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>
> To change your subscription options:
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-- 
Kirk Eppler
Principal Engineer
PP&TD
eppler.kirk@g...
650 225-3911