14 Nov
2005
14 Nov
'05
12:05 p.m.
Hi
I don't recommend using an open flame with the oil.
I used an electric fry pan. I don't think peanut
oil has as low a flash point as many other oils.
That is why it was selected by someone before me
for this purpose. It holds up to higher temperatures
than most oils.
Of course, one should do this outside in a safe area.
One should have a CO2 extinguisher for oil fires or
one rated for them. Don't spray with water if a fire
starts. It would be better to just let it burn up.
I used some tongs and screw drivers to remove the parts.
I generally cut the boards into smaller pieces and don't
completely submerge parts in oil. I watch the temperature
to make sure it is just hot enough to melt solder but
not hotter.
As was mentioned. The oil is really nasty and popping
parts out of boards always splatters some. I used both
a full face shield, goggles, gloves and covering for my
arms. I use the same stuff I use for working with a
large solder pot that we used at a previous company to
solder PC boards by dip soldering. The oil is a little
nastier because to will penatrate cloth easily. Solder
will also if it is moving fast enough but at least it
doesn't just soak though.
Dwight
From: "Jules Richardson"
<julesrichardsonuk at yahoo.co.uk>
Chuck Guzis wrote:
On 11/14/2005 at 9:32 AM Dwight K. Elvey wrote:
True, but it is no less risky than normal cooking with oil - plus it'd
give a much more even heat than a torch. Might give that a try sometime.
Cooking oil is probably cheaper than torch gas too :)
My only caution would be that gold/ceramic ICs tend to have markings
printed on with an ink that detergent will remove quite nicely (made
that mistake once when cleaning a PCB, won't be doing it again :) Other
components seem to survive such cleanings quite happily though.
cheers
Jules
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.