As I've mentioned previously, naphtha is a great cleaner /
degreaser for metal. (Cut 50/50 with alcohol it is a great
flux cleaner as well.) I learned a couple days ago that it
does an excellent job of removing dried raw egg from
auto finishes. That cost me a pint of the precious
liquid.

The good news is that I was shopping at my local 'Lucky'
store (U.S. supermarket chain) this afternoon and spotted
the familiar red gallon can of Coleman camping fuel huddled
on the floor next to the car supplies. US $12.00

http://www.colemancanada.ca/images/e...el_coleman.jpg
http://zenstoves.net/MSDS/Coleman.htm

This store is less than 3 miles from home.
This is roughly equivalent to rediscovering an old wallet in
my side table with $200 in twenties hidden within.

That, combined with the gallon located for me by the remarkably
kind and helpful Ed Huntress should be enough for current
projects.

The stuff is no longer available in local hardware stores
or paint stores labeled 'naphtha' (as a paint dryer) so here is
your word to the wise. Stock up or be left out, bruddah.

--Winston

Winston fired this volley in
:

(Cut 50/50 with alcohol it is a great
flux cleaner as well.)

Winston, naptha (VM&P, low vapor-pressure cut) is not miscible with alcohol
-- I don't know who told you that, but it will not mix. 'Bout like oil and
water.

Lloyd

On Fri, 29 Jul 2011 13:41:45 -0700, Winston
wrote:

As I've mentioned previously, naphtha is a great cleaner /
degreaser for metal. (Cut 50/50 with alcohol it is a great
flux cleaner as well.) I learned a couple days ago that it
does an excellent job of removing dried raw egg from
auto finishes. That cost me a pint of the precious
liquid.

The good news is that I was shopping at my local 'Lucky'
store (U.S. supermarket chain) this afternoon and spotted
the familiar red gallon can of Coleman camping fuel huddled
on the floor next to the car supplies. US $12.00

http://www.colemancanada.ca/images/e...el_coleman.jpg
http://zenstoves.net/MSDS/Coleman.htm

This store is less than 3 miles from home.
This is roughly equivalent to rediscovering an old wallet in
my side table with $200 in twenties hidden within.

That, combined with the gallon located for me by the remarkably
kind and helpful Ed Huntress should be enough for current
projects.

The stuff is no longer available in local hardware stores
or paint stores labeled 'naphtha' (as a paint dryer) so here is
your word to the wise. Stock up or be left out, bruddah.

--Winston

I'll rub my little gloat in. I scored twenty one gallon cans at an
auction a couple years ago for $5.

Karl

Winston imagined:

The stuff is no longer available in local hardware stores
or paint stores labeled 'naphtha' (as a paint dryer) so here is
your word to the wise. Stock up or be left out, bruddah.


I don't know where you live, but it must be the People's Republic of
Kalifornicate.

VM&P naphtha is available all over, in Ace, Home Depot, Lowes,
Mennards... even many Wal-Marts.

I'm not speculating, I buy it about monthly -- for business.

LLoyd

Lloyd E. Sponenburgh wrote:
fired this volley in
:

(Cut 50/50 with alcohol it is a great
flux cleaner as well.)

Winston, naptha (VM&P, low vapor-pressure cut) is not miscible with alcohol
-- I don't know who told you that, but it will not mix. 'Bout like oil and
water.

I readily admit that you could put my entire knowledge of
physics and chemistry in a thimble and still have room for
a medium size battleship. (Pardon the re-entrant definition).

However, when I use straight alcohol to clean flux off of
PCBs, I am left with a sticky coating that can result in
intermittents if allowed into a connector. When I add
naphtha to alcohol, I don't get the sticky intermittents.

Now I am willing to believe that I'm actually cleaning with
almost straight naphtha under those circs and that the
alcohol plays a minimal or non-existent role.

I see several citations on the net for mixtures of
alcohol and naphtha for various purposes by people who
know much more than I do, so I figure it's an honest
mistake.
http://books.google.com/books?id=5Sk...page&q&f=false

Para 2.7.2.2 "in blends of a VM&P naphtha with isobutyl alcohol..."

I'm always happy to learn something new, so I thank you
for the info, as always.

--Winston

"Winston" wrote in message
...
Lloyd E. Sponenburgh wrote:
fired this volley in
:

(Cut 50/50 with alcohol it is a great
flux cleaner as well.)

Winston, naptha (VM&P, low vapor-pressure cut) is not miscible with
alcohol
-- I don't know who told you that, but it will not mix. 'Bout like oil
and
water.

I readily admit that you could put my entire knowledge of
physics and chemistry in a thimble and still have room for
a medium size battleship. (Pardon the re-entrant definition).

However, when I use straight alcohol to clean flux off of
PCBs, I am left with a sticky coating that can result in
intermittents if allowed into a connector. When I add
naphtha to alcohol, I don't get the sticky intermittents.

Now I am willing to believe that I'm actually cleaning with
almost straight naphtha under those circs and that the
alcohol plays a minimal or non-existent role.

I see several citations on the net for mixtures of
alcohol and naphtha for various purposes by people who
know much more than I do, so I figure it's an honest
mistake.
http://books.google.com/books?id=5Sk...page&q&f=false

Para 2.7.2.2 "in blends of a VM&P naphtha with isobutyl alcohol..."

I'm always happy to learn something new, so I thank you
for the info, as always.

--Winston

I would be very surprised if naphtha didn't mix with alcohol. Gasoline will
mix with alcohol (ethanol, if it's dehydrated to less than 3% - 5% water; I
think that methanol is more forgiving, IIRC), and naphtha is a component of
commercial gasoline.

It sounds like it's experimenting time again. I think I"m out of naphtha,
though. But I have some methanol. I'll try to pick up some naphtha tomorrow.
(It's easier in NJ. We breathe it for fun....)

--
Ed Huntress

In article , Winston wrote:
[...]
The stuff is no longer available in local hardware stores
or paint stores labeled 'naphtha' (as a paint dryer) so here is
your word to the wise. Stock up or be left out, bruddah.

I guess that depends on where "local" is. For me, "local" means metropolitan
Indianapolis -- and I assure you that I have no trouble at all finding naphtha
on the shelves at *my* local hardware and paint stores.

"Ed Huntress" fired this volley in
:

But I have some methanol.

Methanol, not normally available to "hardware store shoppers" will
commingle with naphtha to a degree more than ethanol, but not a lot.
Ethanol only in tiny amounts. The alcohols available to the average
shopper are ethanol (as denatured alcohol) and isopropyl (rubbing
alcohol).
Isobutyl ain't one of 'em.

Among other things, "miscible" means able to mix in _any_ proportions and
stay mixed; not just "blended" like oil and vinegar salad dressing.

You mentioned ethanol in gasoline. E10 undergoes separation of the
alcohol and gas if allowed to sit.

I'm sure a shaken-up blend of naphtha and alcohol might benefit removing
flux residues, but I'll be a good wash with _clean_ alcohol after the
first scrubbing would do just as good a job. I worked in the electronics
maintenance and repair business for years (OEM regional computer service
center manager), and we kept two sets of brushes, and two containers of
alcohol (denatured) for cleaning flux off printed circuit boards. First
a good sluicing and washing with the "dirty" bottle, then a separate
rinsing scrub with clean alcohol. Anything from that rinse that went
into the basin went back into the dirty bottle.

It got them perfectly clean. Only Chlorsolv seemed to do a better job,
but it was pretty rough on livers.

LLoyd

"Lloyd E. Sponenburgh" lloydspinsidemindspring.com fired this volley
in . 3.70:

Among other things, "miscible" means able to mix in _any_ proportions
and stay mixed; not just "blended" like oil and vinegar salad
dressing.

Just looked at a miscibility predictor chart -- based upon relative
polarities of the two solvents, ethanol and Naphtha are not predicted to be
miscible. And it stands to reason, as ethanol is strongly polar, and
naphtha strongly non-polar. (and water is polar, and oil not...)

LLoyd

Ed Huntress wrote:

(...)

It sounds like it's experimenting time again. I think I"m out of naphtha,
though. But I have some methanol. I'll try to pick up some naphtha tomorrow.
(It's easier in NJ. We breathe it for fun....)

Eww!

Given that the densities of the two are close and that both are
water-clear, would it require a centrifuge and diffraction meter
to do that test?

--Winston

Lloyd E. Sponenburgh wrote:

(...)

It got them perfectly clean. Only Chlorsolv seemed to do a better job,
but it was pretty rough on livers.

Back when I took my QQS NASA soldering course too many years
ago, we did clean the joints with alcohol and they were quite
reliable; no sticky residue. The alcohol that I can get these
days does not seem to be quite as 'clean' though.
I didn't figure out it was 'solvent pollution' until almost
too late.

I recall using TFE Fluorcarbon in a heated spray tank many moons
ago. That stuff was effective as all getout! The vapor in the
tank left my hands completely oil - free. Eww! Chalky Fingers!

--Winston

Lloyd E. Sponenburgh wrote:
"Lloyd E. Sponenburgh"lloydspinsidemindspring.com fired this volley
in . 3.70:

Among other things, "miscible" means able to mix in _any_ proportions
and stay mixed; not just "blended" like oil and vinegar salad
dressing.

Just looked at a miscibility predictor chart -- based upon relative
polarities of the two solvents, ethanol and Naphtha are not predicted to be
miscible. And it stands to reason, as ethanol is strongly polar, and
naphtha strongly non-polar. (and water is polar, and oil not...)

Polarity eh?

I was poking about on the web, but didn't know how to ask the question.

This is interesting.

Thanks!

--Winston

Karl Townsend wrote:

(...)

I'll rub my little gloat in. I scored twenty one gallon cans at an
auction a couple years ago for $5.

Some stores are selling that for over 50 smackers
per gallon right now. Looks like you beat inflation,
Karl!

--Winston

Lloyd E. Sponenburgh wrote:
Winston imagined:

The stuff is no longer available in local hardware stores
or paint stores labeled 'naphtha' (as a paint dryer) so here is
your word to the wise. Stock up or be left out, bruddah.


I don't know where you live, but it must be the People's Republic of
Kalifornicate.

Silicon Gulch!
Can you get more 'California' than that?



VM&P naphtha is available all over, in Ace, Home Depot, Lowes,
Mennards... even many Wal-Marts.

That was true here a few months ago, too.
It was cheap and plentiful.
I dunno what happened, but when I ask, all I get is
the deer-in-headlights look. 'Twilight Zone' responses.

I'm not speculating, I buy it about monthly -- for business.

About $12 a gallon, right?

--Winston -- But we don't *have* weather.

Doug Miller wrote:
In , wrote:
[...]
The stuff is no longer available in local hardware stores
or paint stores labeled 'naphtha' (as a paint dryer) so here is
your word to the wise. Stock up or be left out, bruddah.

I guess that depends on where "local" is. For me, "local" means metropolitan
Indianapolis -- and I assure you that I have no trouble at all finding naphtha
on the shelves at *my* local hardware and paint stores.

Get out your stopwatch.

The stuff is so volatile that it takes the
can with it.

http://www.smarterpaint.com/blog/229...oc-regulations

--Winston -- Be happy! Everyone follows California, environmentally.

On Fri, 29 Jul 2011 20:59:50 -0700, Winston
wrote:

Lloyd E. Sponenburgh wrote:
"Lloyd E. Sponenburgh"lloydspinsidemindspring.com fired this volley
in . 3.70:

Among other things, "miscible" means able to mix in _any_ proportions
and stay mixed; not just "blended" like oil and vinegar salad
dressing.

Just looked at a miscibility predictor chart -- based upon relative
polarities of the two solvents, ethanol and Naphtha are not predicted to be
miscible. And it stands to reason, as ethanol is strongly polar, and
naphtha strongly non-polar. (and water is polar, and oil not...)

Polarity eh?

I was poking about on the web, but didn't know how to ask the question.

This is interesting.

Thanks!

--Winston


Chemistry looks like fun, never had a good enough memory to learn it
from a book. I did run into that polarity stuff recently while trying
to figure out chlorine and hydrogen attraction. Still can't figure a
comparison from bubbling many inert gases through molten aluminum or
use chlorine and make toxic gas in the process. A MIT guy said to go
straight to the chlorine.

BTW, I found $1,200 under a mat in my tool box once and have only a
vague memory of something I was about to buy 3-5 years in the past.


SW

Sunworshipper wrote:

(...)

BTW, I found $1,200 under a mat in my tool box once and have only a
vague memory of something I was about to buy 3-5 years in the past.

Nearest I ever came was lifting up the washing machine
to find a $5.00 bill underneath.

I don't remember putting it there.

--Winston

"Winston" wrote in message
...
Ed Huntress wrote:

(...)

It sounds like it's experimenting time again. I think I"m out of naphtha,
though. But I have some methanol. I'll try to pick up some naphtha
tomorrow.
(It's easier in NJ. We breathe it for fun....)

Eww!

Given that the densities of the two are close and that both are
water-clear, would it require a centrifuge and diffraction meter
to do that test?

--Winston

I sure hope not. I was planning to throw a little of each into a Mason jar
and stir it up. d8-)

--
Ed Huntress

Ed Huntress wrote:
wrote in message
...

(...)

Given that the densities of the two are close and that both are
water-clear, would it require a centrifuge and diffraction meter
to do that test?

--Winston

I sure hope not. I was planning to throw a little of each into a Mason jar
and stir it up. d8-)

Roger that.

--Winston

In article , Winston wrote:
Doug Miller wrote:
In ,
wrote:
[...]
The stuff is no longer available in local hardware stores
or paint stores labeled 'naphtha' (as a paint dryer) so here is
your word to the wise. Stock up or be left out, bruddah.

I guess that depends on where "local" is. For me, "local" means metropolitan
Indianapolis -- and I assure you that I have no trouble at all finding naphtha
on the shelves at *my* local hardware and paint stores.

Get out your stopwatch.

The stuff is so volatile that it takes the
can with it.

http://www.smarterpaint.com/blog/229...wsuit-against-
home-depot-for-violating-voc-regulations

Southern California air quality regulations have no effect on what retailers
are allowed to sell in Indianapolis.

Hey, THAT's where I left it! You want to mail it back, now?

--
Christopher A. Young
Learn more about Jesus
www.lds.org
..


"Winston" wrote in message
...
Sunworshipper wrote:

(...)

BTW, I found $1,200 under a mat in my tool box once and
have only a
vague memory of something I was about to buy 3-5 years in
the past.

Nearest I ever came was lifting up the washing machine
to find a $5.00 bill underneath.

I don't remember putting it there.

--Winston

"Ed Huntress" fired this volley in
:

I sure hope not. I was planning to throw a little of each into a Mason
jar and stir it up. d8-)


That's as good a test as any. Shake it well, let it sit.

LLoyd

Winston fired this volley in
:

Naphta miscible with ethanol.

Hey, Winston. I'm throwing out a whole library of organic chemistry
texts you can have for free. You'll find them on the roadside, out in
the rain.

MY can of naphtha and MY can of denatured ethanol are quite miscible,
indeed. They might stratify in 90-days, but they sure are mixed right
now!

I and all my sources were wrong.

(the books are not really going in the dirt G)

LLoyd

On 7/29/2011 1:41 PM, Winston wrote:
As I've mentioned previously, naphtha is a great cleaner /
degreaser for metal. (Cut 50/50 with alcohol it is a great
flux cleaner as well.) I learned a couple days ago that it
does an excellent job of removing dried raw egg from
auto finishes. That cost me a pint of the precious
liquid.

The good news is that I was shopping at my local 'Lucky'
store (U.S. supermarket chain) this afternoon and spotted
the familiar red gallon can of Coleman camping fuel huddled
on the floor next to the car supplies. US $12.00

http://www.colemancanada.ca/images/e...el_coleman.jpg
http://zenstoves.net/MSDS/Coleman.htm

This store is less than 3 miles from home.
This is roughly equivalent to rediscovering an old wallet in
my side table with $200 in twenties hidden within.

That, combined with the gallon located for me by the remarkably
kind and helpful Ed Huntress should be enough for current
projects.

The stuff is no longer available in local hardware stores
or paint stores labeled 'naphtha' (as a paint dryer) so here is
your word to the wise. Stock up or be left out, bruddah.

--Winston
My memory may be wrong, but, I think the naptha or Coleman fuel is one
of the solvents used in meth labs. That is why it is hard to find. Then,
all new Coleman devices use propane rather than the naptha fuel.

Paul

Paul Drahn fired this volley in news:j118j8$bmq$1
@dont-email.me:

Then,
all new Coleman devices use propane rather than the naptha fuel.


Again, that must be in California. We can buy all the "dual fuel"
(Gasoline or Naphtha) Coleman appliances here. Propane just doesn't work
in deep sub-zero temperatures, while gas appliances always work, because
they generate their own vaporization heat in a "generator".

LLoyd

Lloyd E. Sponenburgh wrote:

(...)

MY can of naphtha and MY can of denatured ethanol are quite miscible,
indeed. They might stratify in 90-days, but they sure are mixed right
now!

I and all my sources were wrong.

Well, eventually you *had* to make a mistake,
statistically speaking.

To have it happen after age 16 was a good thing.



--Winston

Doug Miller wrote:

(...)

Southern California air quality regulations have no effect on what retailers
are allowed to sell in Indianapolis.

Not instantly. Eventually, probably.

--Winston

Paul Drahn wrote:

(...)

My memory may be wrong, but, I think the naptha or Coleman fuel is one
of the solvents used in meth labs. That is why it is hard to find. Then,
all new Coleman devices use propane rather than the naptha fuel.

Ah! That explains why both retailers asked for
an explanation for my naphtha purchase.

I heard a similar rumor about highway flares, too.
I can't purchase those now.
My normal retailer gave me a 'song and dance' about
CARB that had outlawed flares. Two days later, I
saw an entire lane 'decorated' with them by the
Highway Patrol. Somebody is being less than perfectly
truthful here, I conjecture.

--Winston-- By that Wednesday, only outlaws could get
sourdough bread.

Lloyd E. Sponenburgh wrote:
Paul fired this volley in news:j118j8$bmq$1
@dont-email.me:

Then,
all new Coleman devices use propane rather than the naptha fuel.


Again, that must be in California. We can buy all the "dual fuel"
(Gasoline or Naphtha) Coleman appliances here. Propane just doesn't work
in deep sub-zero temperatures, while gas appliances always work, because
they generate their own vaporization heat in a "generator".

Even in California, the supply of naphtha - capable appliances never
stuttered:

http://www.rei.com/product/405020/co...2-burner-stove
http://www.rei.com/product/410078/co...mantle-lantern

If you want to pay $32 a gallon for fuel, it's available at the
same place:
http://www.rei.com/product/614110/crown-camp-fuel-quart

And for $52 a gallon you can get the 'good stuff'!
http://www.rei.com/product/721999/msr-superfuel-quart

--Winston -- Oh, you need *fuel* too, huh?

Winston fired this volley in news:j11he602u41
@news3.newsguy.com:

To have it happen after age 16 was a good thing.

Yeah... but after 62 is embarassing! G

LLoyd

In article , Winston wrote:
Doug Miller wrote:

(...)

Southern California air quality regulations have no effect on what retailers
are allowed to sell in Indianapolis.

Not instantly. Eventually, probably.

Highly unlikely. You folks on the coasts, especially on the Left Coast, often
fail to realize that your local experiences and conditions are *not* typical
of America as a whole. Things are very different in the Midwest.

Three factors combine to produce SoCal's air quality regulations; all of them
are absent in Indianapolis:

1. California is a nanny state; Indiana is not, and is unlikely to become one
any time soon.

2. SoCal has an extremely high population density; Indiana does not. Los
Angeles County alone has nearly 50% more people than the entire state of
Indiana, and more than ten times as many as Marion County (Indianapolis), the
most populous county in Indiana. We simply don't have anywhere near as many
people to generate pollution as you have, and it's going to be centuries, at
least, before we do.

3.SoCal also has a mountain range immediately east of its major population
centers, which impedes the dispersal by wind of the pollutants generated by
the tens of millions of people living there. We don't have that problem.

Lloyd E. Sponenburgh wrote:
fired this volley in news:j11he602u41
@news3.newsguy.com:

To have it happen after age 16 was a good thing.

Yeah... but after 62 is embarassing!G

I wouldn't be embarrassed at all, Lloyd.

I made my first mistake *long before* age 16.

--Winston -- Mostly in the 'Parent Choosing' department.

Doug Miller wrote:

(Reasons why regulations in California will not
propagate to Indianapolis)

If the rumor is true (naphtha as drug precursor), it
will likely become restricted across the nation as it
has in California.
Laws have a way of becoming more restrictive and
ubiquitous over time, not less so.

I wish I had known about the restricted availability
and spike in prices for materials I use in my metal-
working hobby in advance. I'd have 'stocked up'.

Thassall I was saying.

--Winston

"Doug Miller" wrote in message
...
In article , Winston
wrote:
Doug Miller wrote:

(...)

Southern California air quality regulations have no effect on what
retailers
are allowed to sell in Indianapolis.

Not instantly. Eventually, probably.

Highly unlikely. You folks on the coasts, especially on the Left Coast,
often
fail to realize that your local experiences and conditions are *not*
typical
of America as a whole. Things are very different in the Midwest.

Yeah. That's why we have national standards on things like power plant
emissions. For decades you just pumped it into the sky and forgot it.
Meantime, we got the acid rain, the dead fish, and the sterile lakes and
ponds. People in the Midwest kicked and screamed about having to scrub the
sulfur out of their stack gasses, from burning their cheap coal.


Three factors combine to produce SoCal's air quality regulations; all of
them
are absent in Indianapolis:

SoCal's air-quality regulations are the result of a set of geographical and
atmospheric conditions that turned the L.A. Basin into a killing jar for
humans.


1. California is a nanny state; Indiana is not, and is unlikely to become
one
any time soon.

Your state motto should be "What, me worry?"

Once the crap goes up, who cares where it comes down?


2. SoCal has an extremely high population density; Indiana does not. Los
Angeles County alone has nearly 50% more people than the entire state of
Indiana, and more than ten times as many as Marion County (Indianapolis),
the
most populous county in Indiana. We simply don't have anywhere near as
many
people to generate pollution as you have, and it's going to be centuries,
at
least, before we do.

3.SoCal also has a mountain range immediately east of its major population
centers, which impedes the dispersal by wind of the pollutants generated
by
the tens of millions of people living there. We don't have that problem.

Besides, it blows east...

I thought you said it was because it's a nanny state?

--
Ed Huntress

"Winston" wrote in message
...
Doug Miller wrote:

(Reasons why regulations in California will not
propagate to Indianapolis)

If the rumor is true (naphtha as drug precursor), it
will likely become restricted across the nation as it
has in California.

Instructions for extracting from "honey" (freebase methamphetamine in an
acidic solution):

"Geez extracts with VM&P naptha most of the time, and always does at least
one wash with hot naptha. Washing the reaction fluid with the solvent used
to extract will remove anything in the fluid that is soluble in that
solvent, which means it will not be in the fluid to be extracted with the
meth. This logically translates to cleaner meth. If you plan to "ker
plunk" -- or extract with hot naptha, Coleman's fuel, or equivalent-- wash
with hot naptha, Coleman's fuel, or equivalent at least one time."


Laws have a way of becoming more restrictive and
ubiquitous over time, not less so.

I wish I had known about the restricted availability
and spike in prices for materials I use in my metal-
working hobby in advance. I'd have 'stocked up'.

Thassall I was saying.

--Winston

Winston wrote:
Lloyd E. Sponenburgh wrote:
fired this volley in

(Cut 50/50 with alcohol it is a great
flux cleaner as well.)

Winston, naptha (VM&P, low vapor-pressure cut) is not miscible with
alcohol
-- I don't know who told you that, but it will not mix. 'Bout like oil
and water.

I readily admit that you could put my entire knowledge of
physics and chemistry in a thimble and still have room for
a medium size battleship. (Pardon the re-entrant definition).

However, when I use straight alcohol to clean flux off of
PCBs, I am left with a sticky coating that can result in
intermittents if allowed into a connector. When I add
naphtha to alcohol, I don't get the sticky intermittents.

Now I am willing to believe that I'm actually cleaning with
almost straight naphtha under those circs and that the
alcohol plays a minimal or non-existent role.

I see several citations on the net for mixtures of
alcohol and naphtha for various purposes by people who
know much more than I do, so I figure it's an honest
mistake.

http://books.google.com/books?id=5Sk...page&q&f=false

Para 2.7.2.2 "in blends of a VM&P naphtha with isobutyl alcohol..."

I'm always happy to learn something new, so I thank you
for the info, as always.

As far as I know, Ronsonol and Zippo lighter fluid is primarily naphtha -
as far as its efficacy, it's the only liquid known to man that will get
chewing gum out of your hair.

But it's probably a little expensive to be sloshing around washing flux
off boards.

Is it still possible to get any chlorinated solvents? They work like
a dream on flux.

Cheers!
Rich

Winston wrote:
Lloyd E. Sponenburgh wrote:
fired this volley in

(Cut 50/50 with alcohol it is a great
flux cleaner as well.)

Winston, naptha (VM&P, low vapor-pressure cut) is not miscible with
alcohol
-- I don't know who told you that, but it will not mix. 'Bout like oil
and water.

I readily admit that you could put my entire knowledge of
physics and chemistry in a thimble and still have room for
a medium size battleship. (Pardon the re-entrant definition).

However, when I use straight alcohol to clean flux off of
PCBs, I am left with a sticky coating that can result in
intermittents if allowed into a connector. When I add
naphtha to alcohol, I don't get the sticky intermittents.

Now I am willing to believe that I'm actually cleaning with
almost straight naphtha under those circs and that the
alcohol plays a minimal or non-existent role.

I see several citations on the net for mixtures of
alcohol and naphtha for various purposes by people who
know much more than I do, so I figure it's an honest
mistake.

http://books.google.com/books?id=5Sk...page&q&f=false

Para 2.7.2.2 "in blends of a VM&P naphtha with isobutyl alcohol..."

I'm always happy to learn something new, so I thank you
for the info, as always.

Have you tried MEK? (Methyl-ethyl ketone) It's a pretty aggressive
solvent, but not as volatile as acetone (dimethyl ketone).

Good Luck!
Rich

Winston wrote:
Sunworshipper wrote:

(...)

BTW, I found $1,200 under a mat in my tool box once and have only a
vague memory of something I was about to buy 3-5 years in the past.

Nearest I ever came was lifting up the washing machine
to find a $5.00 bill underneath.

I don't remember putting it there.

I once stashed $300 under the night table and forgot about it until
I went looking for _any_ cash in the house! ;-)

Cheers!
Rich

Winston wrote:
Lloyd E. Sponenburgh wrote:

(...)

It got them perfectly clean. Only Chlorsolv seemed to do a better job,
but it was pretty rough on livers.

Back when I took my QQS NASA soldering course too many years
ago, we did clean the joints with alcohol and they were quite
reliable; no sticky residue. The alcohol that I can get these
days does not seem to be quite as 'clean' though.
I didn't figure out it was 'solvent pollution' until almost
too late.

I recall using TFE Fluorcarbon in a heated spray tank many moons
ago. That stuff was effective as all getout! The vapor in the
tank left my hands completely oil - free. Eww! Chalky Fingers!

The thing that surprised me about the vapor degreaser was that
when the vapor condenses on your skin, it's HOT! =:-O

Cheers!
Rich

On Sat, 30 Jul 2011 19:25:16 GMT, (Doug
Miller) wrote:

In article , Winston wrote:
Doug Miller wrote:

(...)

Southern California air quality regulations have no effect on what retailers
are allowed to sell in Indianapolis.

Not instantly. Eventually, probably.

Highly unlikely. You folks on the coasts, especially on the Left Coast, often
fail to realize that your local experiences and conditions are *not* typical
of America as a whole. Things are very different in the Midwest.


I suggest you review this ....and then rethink.

Operative word...CARB

http://www.carsdirect.com/car-mainte...-in-your-state


Gunner

--
Maxim 12: A soft answer turneth away wrath.
Once wrath is looking the other way, shoot it in the head.