removing parts from PCBs

Marvin Johnston marvin at
Mon Nov 14 18:56:35 CST 2005

A much better alternative to peanut oil is fusing or reflow oil used in
the printed circuit industry (used most probably in the smaller shops.)
It runs $84.30/gallon according to information on the DalPro website.
While they seem to have the supplies necessary to make PCBs, their
prices are ... high. I would try a local printed circuit manufacturer to
see if I could get some their first. My guess is that it shouldn't be
more than about $8.00/gallon.

BTW, peanut oil used to be used for reflow many many moons ago and was
replaced at least 25 years ago with synthetic oils.

> On 11/14/2005 at 9:32 AM Dwight K. Elvey wrote:
> > I've used peanut oil and a fry pan. Then wash the
> >parts in detergent to remove the oil. You need to wear
> >gloves and goggles as safety gear. Hot peanut oil
> >in your eye is not something I'd like to even think about.
> > Make sure that the assembler didn't bend the corner leads
> >of the ICs. If they did, you'll need to straighten them
> >before the oil, using a soldering iron.
> > It just seems to me that the oil method is a little more
> >controlled than a torch.
> That's downright scary--oil fires are nasty.   And burns from oil that hot
> (I've had them from cooking) take a long time to heal.

> Is synthetic automotive oil flammable at desoldering temperatures?
> Cheers,
> Chuck

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