Best flux remover yet: brake cleaner...

P

Phil Hobbs

Guest
Hi, all,

Just wanted to pass along a new (to me) discovery.

You know how when you try removing rosin flux with \"flux remover\" or a
polar solvent such as methanol or acetone, it leaves all this white crap
behind?

Yesterday I was in Advanced Auto Parts to get a can of Berryman B12 to
clean out my fuel injectors. Just on spec, I bought a can of Carquest
brake cleaner ($8ish for a 19-oz can) to try out on my current protos,
which were getting a bit gnarly. (I picked it on the excellent grounds
that it was the cheapest.)

Stuff is unbelievable. One good spritz, followed by a bit of canned
air, and the board looks like nobody ever monkeyed with it at all. It
even left the Sharpie annotations behind.

It does have various chlorinated things in it, but man, does it ever
work. (Use it outside if you don\'t have a fume hood.)

Highly recommended.

Cheers

Phil Hobbs

--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC / Hobbs ElectroOptics
Optics, Electro-optics, Photonics, Analog Electronics
Briarcliff Manor NY 10510

http://electrooptical.net
http://hobbs-eo.com
 
mandag den 31. juli 2023 kl. 20.41.53 UTC+2 skrev Phil Hobbs:
Hi, all,

Just wanted to pass along a new (to me) discovery.

You know how when you try removing rosin flux with \"flux remover\" or a
polar solvent such as methanol or acetone, it leaves all this white crap
behind?

Yesterday I was in Advanced Auto Parts to get a can of Berryman B12 to
clean out my fuel injectors. Just on spec, I bought a can of Carquest
brake cleaner ($8ish for a 19-oz can) to try out on my current protos,
which were getting a bit gnarly. (I picked it on the excellent grounds
that it was the cheapest.)

Stuff is unbelievable. One good spritz, followed by a bit of canned
air, and the board looks like nobody ever monkeyed with it at all. It
even left the Sharpie annotations behind.

It does have various chlorinated things in it, but man, does it ever
work. (Use it outside if you don\'t have a fume hood.)
Click to expand...

not all brake cleaner is chlorinated
 
On 2023-07-31 14:51, Lasse Langwadt Christensen wrote:
mandag den 31. juli 2023 kl. 20.41.53 UTC+2 skrev Phil Hobbs:
Hi, all,

Just wanted to pass along a new (to me) discovery.

You know how when you try removing rosin flux with \"flux remover\" or a
polar solvent such as methanol or acetone, it leaves all this white crap
behind?

Yesterday I was in Advanced Auto Parts to get a can of Berryman B12 to
clean out my fuel injectors. Just on spec, I bought a can of Carquest
brake cleaner ($8ish for a 19-oz can) to try out on my current protos,
which were getting a bit gnarly. (I picked it on the excellent grounds
that it was the cheapest.)

Stuff is unbelievable. One good spritz, followed by a bit of canned
air, and the board looks like nobody ever monkeyed with it at all. It
even left the Sharpie annotations behind.

It does have various chlorinated things in it, but man, does it ever
work. (Use it outside if you don\'t have a fume hood.)

not all brake cleaner is chlorinated


The good stuff is!
Click to expand...

Cheers

Phil Hobbs

--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC / Hobbs ElectroOptics
Optics, Electro-optics, Photonics, Analog Electronics
Briarcliff Manor NY 10510

http://electrooptical.net
http://hobbs-eo.com
 
mandag den 31. juli 2023 kl. 20.52.41 UTC+2 skrev Phil Hobbs:
On 2023-07-31 14:51, Lasse Langwadt Christensen wrote:
mandag den 31. juli 2023 kl. 20.41.53 UTC+2 skrev Phil Hobbs:
Hi, all,

Just wanted to pass along a new (to me) discovery.

You know how when you try removing rosin flux with \"flux remover\" or a
polar solvent such as methanol or acetone, it leaves all this white crap
behind?

Yesterday I was in Advanced Auto Parts to get a can of Berryman B12 to
clean out my fuel injectors. Just on spec, I bought a can of Carquest
brake cleaner ($8ish for a 19-oz can) to try out on my current protos,
which were getting a bit gnarly. (I picked it on the excellent grounds
that it was the cheapest.)

Stuff is unbelievable. One good spritz, followed by a bit of canned
air, and the board looks like nobody ever monkeyed with it at all. It
even left the Sharpie annotations behind.

It does have various chlorinated things in it, but man, does it ever
work. (Use it outside if you don\'t have a fume hood.)

not all brake cleaner is chlorinated


The good stuff is!
Click to expand...

have you tried?
 
Lasse Langwadt Christensen <langwadt@fonz.dk> wrote:
mandag den 31. juli 2023 kl. 20.52.41 UTC+2 skrev Phil Hobbs:
On 2023-07-31 14:51, Lasse Langwadt Christensen wrote:
mandag den 31. juli 2023 kl. 20.41.53 UTC+2 skrev Phil Hobbs:
Hi, all,

Just wanted to pass along a new (to me) discovery.

You know how when you try removing rosin flux with \"flux remover\" or a
polar solvent such as methanol or acetone, it leaves all this white crap
behind?

Yesterday I was in Advanced Auto Parts to get a can of Berryman B12 to
clean out my fuel injectors. Just on spec, I bought a can of Carquest
brake cleaner ($8ish for a 19-oz can) to try out on my current protos,
which were getting a bit gnarly. (I picked it on the excellent grounds
that it was the cheapest.)

Stuff is unbelievable. One good spritz, followed by a bit of canned
air, and the board looks like nobody ever monkeyed with it at all. It
even left the Sharpie annotations behind.

It does have various chlorinated things in it, but man, does it ever
work. (Use it outside if you don\'t have a fume hood.)

not all brake cleaner is chlorinated


The good stuff is!

have you tried?
Click to expand...

Nah, I still have 0.98 can left!

--
Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC /
Hobbs ElectroOptics Optics, Electro-optics, Photonics, Analog Electronics
 
Lasse Langwadt Christensen <langwadt@fonz.dk> wrote:
mandag den 31. juli 2023 kl. 20.41.53 UTC+2 skrev Phil Hobbs:
Hi, all,

Just wanted to pass along a new (to me) discovery.

You know how when you try removing rosin flux with \"flux remover\" or a
polar solvent such as methanol or acetone, it leaves all this white crap
behind?

Yesterday I was in Advanced Auto Parts to get a can of Berryman B12 to
clean out my fuel injectors. Just on spec, I bought a can of Carquest
brake cleaner ($8ish for a 19-oz can) to try out on my current protos,
which were getting a bit gnarly. (I picked it on the excellent grounds
that it was the cheapest.)

Stuff is unbelievable. One good spritz, followed by a bit of canned
air, and the board looks like nobody ever monkeyed with it at all. It
even left the Sharpie annotations behind.

It does have various chlorinated things in it, but man, does it ever
work. (Use it outside if you don\'t have a fume hood.)

not all brake cleaner is chlorinated
Click to expand...
Some cleaners contain even flouric acid...
 
mandag den 31. juli 2023 kl. 21.58.28 UTC+2 skrev Uwe Bonnes:
Lasse Langwadt Christensen <lang...@fonz.dk> wrote:
mandag den 31. juli 2023 kl. 20.41.53 UTC+2 skrev Phil Hobbs:
Hi, all,

Just wanted to pass along a new (to me) discovery.

You know how when you try removing rosin flux with \"flux remover\" or a
polar solvent such as methanol or acetone, it leaves all this white crap
behind?

Yesterday I was in Advanced Auto Parts to get a can of Berryman B12 to
clean out my fuel injectors. Just on spec, I bought a can of Carquest
brake cleaner ($8ish for a 19-oz can) to try out on my current protos,
which were getting a bit gnarly. (I picked it on the excellent grounds
that it was the cheapest.)

Stuff is unbelievable. One good spritz, followed by a bit of canned
air, and the board looks like nobody ever monkeyed with it at all. It
even left the Sharpie annotations behind.

It does have various chlorinated things in it, but man, does it ever
work. (Use it outside if you don\'t have a fume hood.)

not all brake cleaner is chlorinated

Some cleaners contain even flouric acid...
Click to expand...

yeh real nasty stuff and at ~260\'C chlorinated brake clean makes phosgene ..
 
On Mon, 31 Jul 2023 13:32:47 -0700 (PDT), Lasse Langwadt Christensen
wrote:

mandag den 31. juli 2023 kl. 21.58.28 UTC+2 skrev Uwe Bonnes:
Lasse Langwadt Christensen <lang...@fonz.dk> wrote:
mandag den 31. juli 2023 kl. 20.41.53 UTC+2 skrev Phil Hobbs:
Hi, all,

Just wanted to pass along a new (to me) discovery.

You know how when you try removing rosin flux with \"flux remover\" or
a polar solvent such as methanol or acetone, it leaves all this
white crap behind?

Yesterday I was in Advanced Auto Parts to get a can of Berryman B12
to clean out my fuel injectors. Just on spec, I bought a can of
Carquest brake cleaner ($8ish for a 19-oz can) to try out on my
current protos, which were getting a bit gnarly. (I picked it on the
excellent grounds that it was the cheapest.)

Stuff is unbelievable. One good spritz, followed by a bit of canned
air, and the board looks like nobody ever monkeyed with it at all.
It even left the Sharpie annotations behind.

It does have various chlorinated things in it, but man, does it ever
work. (Use it outside if you don\'t have a fume hood.)

not all brake cleaner is chlorinated

Some cleaners contain even flouric acid...

yeh real nasty stuff and at ~260\'C chlorinated brake clean makes
phosgene ..
Click to expand...

It should be long gone out your good ventilation before getting anywhere
near 260 C, and small amounts of phosgene are not very dangerous anyhow.
I once lab tested a phosgene compressor shaft seal, and the tech who went
to the plant for installation and field test reported that the place stank
of phosgene and it made his cigarettes taste bad. Used in plastics
manufacturing, it is shipped in tank trucks placarded \"corrosive\".

Alternative brake cleaners are flammable. And not tested for flux
removal :).
 
On Mon, 31 Jul 2023 14:41:36 -0400, Phil Hobbs
<pcdhSpamMeSenseless@electrooptical.net> wrote:

Hi, all,

Just wanted to pass along a new (to me) discovery.

You know how when you try removing rosin flux with \"flux remover\" or a
polar solvent such as methanol or acetone, it leaves all this white crap
behind?

Yesterday I was in Advanced Auto Parts to get a can of Berryman B12 to
clean out my fuel injectors. Just on spec, I bought a can of Carquest
brake cleaner ($8ish for a 19-oz can) to try out on my current protos,
which were getting a bit gnarly. (I picked it on the excellent grounds
that it was the cheapest.)

Stuff is unbelievable. One good spritz, followed by a bit of canned
air, and the board looks like nobody ever monkeyed with it at all. It
even left the Sharpie annotations behind.

It does have various chlorinated things in it, but man, does it ever
work. (Use it outside if you don\'t have a fume hood.)

Highly recommended.

Cheers

Phil Hobbs
Click to expand...

Do my brakes need cleaning? I\'ve never done that. How embarassing.

We have a \"vapor degreaser\" with two tanks, a boiling deflux side and
a clean distilled side. When it\'s shut down and nobody is looking and
the spray wand is off, I dunk my boards in the flux side and then the
clean side. Don\'t tell anyone!

https://www.dropbox.com/scl/fo/gga0hhl0uv38sauo7ucs8/h?rlkey=1x3twrmajyelxxpnr210thot4&dl=0
 
mandag den 31. juli 2023 kl. 23.28.07 UTC+2 skrev John Larkin:
On Mon, 31 Jul 2023 14:41:36 -0400, Phil Hobbs
pcdhSpamM...@electrooptical.net> wrote:

Hi, all,

Just wanted to pass along a new (to me) discovery.

You know how when you try removing rosin flux with \"flux remover\" or a
polar solvent such as methanol or acetone, it leaves all this white crap
behind?

Yesterday I was in Advanced Auto Parts to get a can of Berryman B12 to
clean out my fuel injectors. Just on spec, I bought a can of Carquest
brake cleaner ($8ish for a 19-oz can) to try out on my current protos,
which were getting a bit gnarly. (I picked it on the excellent grounds
that it was the cheapest.)

Stuff is unbelievable. One good spritz, followed by a bit of canned
air, and the board looks like nobody ever monkeyed with it at all. It
even left the Sharpie annotations behind.

It does have various chlorinated things in it, but man, does it ever
work. (Use it outside if you don\'t have a fume hood.)

Highly recommended.

Cheers

Phil Hobbs
Do my brakes need cleaning? I\'ve never done that. How embarassing.
Click to expand...

it is to remove the protective oil on the new discs when replacing
 
In article <2bbdc611-7a26-9894-a1e2-497fcea6bd7f@electrooptical.net>,
pcdhSpamMeSenseless@electrooptical.net says...
Hi, all,

Just wanted to pass along a new (to me) discovery.

You know how when you try removing rosin flux with \"flux remover\" or a
polar solvent such as methanol or acetone, it leaves all this white crap
behind?

Yesterday I was in Advanced Auto Parts to get a can of Berryman B12 to
clean out my fuel injectors. Just on spec, I bought a can of Carquest
brake cleaner ($8ish for a 19-oz can) to try out on my current protos,
which were getting a bit gnarly. (I picked it on the excellent grounds
that it was the cheapest.)

Stuff is unbelievable. One good spritz, followed by a bit of canned
air, and the board looks like nobody ever monkeyed with it at all. It
even left the Sharpie annotations behind.

It does have various chlorinated things in it, but man, does it ever
work. (Use it outside if you don\'t have a fume hood.)

Highly recommended.

Cheers

Phil Hobbs
Click to expand...
I\'ve used it before, but you have to be careful with certain plastics.
 
On Monday, July 31, 2023 at 2:41:53 PM UTC-4, Phil Hobbs wrote:
Hi, all,

Just wanted to pass along a new (to me) discovery.

You know how when you try removing rosin flux with \"flux remover\" or a
polar solvent such as methanol or acetone, it leaves all this white crap
behind?

Yesterday I was in Advanced Auto Parts to get a can of Berryman B12 to
clean out my fuel injectors. Just on spec, I bought a can of Carquest
brake cleaner ($8ish for a 19-oz can) to try out on my current protos,
which were getting a bit gnarly. (I picked it on the excellent grounds
that it was the cheapest.)

Stuff is unbelievable. One good spritz, followed by a bit of canned
air, and the board looks like nobody ever monkeyed with it at all. It
even left the Sharpie annotations behind.

It does have various chlorinated things in it, but man, does it ever
work. (Use it outside if you don\'t have a fume hood.)

Highly recommended.

Cheers

Phil Hobbs

--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC / Hobbs ElectroOptics
Optics, Electro-optics, Photonics, Analog Electronics
Briarcliff Manor NY 10510

http://electrooptical.net
http://hobbs-eo.com
Click to expand...
thank you for the tip!!
 
On 7/31/2023 5:27 PM, John Larkin wrote:
On Mon, 31 Jul 2023 14:41:36 -0400, Phil Hobbs
pcdhSpamMeSenseless@electrooptical.net> wrote:

Hi, all,

Just wanted to pass along a new (to me) discovery.

You know how when you try removing rosin flux with \"flux remover\" or a
polar solvent such as methanol or acetone, it leaves all this white crap
behind?

Yesterday I was in Advanced Auto Parts to get a can of Berryman B12 to
clean out my fuel injectors. Just on spec, I bought a can of Carquest
brake cleaner ($8ish for a 19-oz can) to try out on my current protos,
which were getting a bit gnarly. (I picked it on the excellent grounds
that it was the cheapest.)

Stuff is unbelievable. One good spritz, followed by a bit of canned
air, and the board looks like nobody ever monkeyed with it at all. It
even left the Sharpie annotations behind.

It does have various chlorinated things in it, but man, does it ever
work. (Use it outside if you don\'t have a fume hood.)

Highly recommended.

Cheers

Phil Hobbs

Do my brakes need cleaning? I\'ve never done that. How embarassing.
Click to expand...

Seems more useful for drum brake service, I \"cleaned\" the original pads
and rotors on my Volt by replacing them and taking the old ones to the
scrap yard after ~7 years. Regeneration means they tend to last a long
time but less so in the Northeast than California.

Most of the bolts and pins are torque-to-yield so no point in cleaning
those either, they go to the scrapper also. Modern disc brakes are
pretty low-maintenance.


We have a \"vapor degreaser\" with two tanks, a boiling deflux side and
a clean distilled side. When it\'s shut down and nobody is looking and
the spray wand is off, I dunk my boards in the flux side and then the
clean side. Don\'t tell anyone!

https://www.dropbox.com/scl/fo/gga0hhl0uv38sauo7ucs8/h?rlkey=1x3twrmajyelxxpnr210thot4&dl=0
Click to expand...

New manufacture boards should look new, but the e.g. HP service guides
I\'ve read have said that for repairs by techs they should just let the
flux lie vs. trying to scrub it off.
 
On 7/31/2023 4:58 PM, Glen Walpert wrote:
On Mon, 31 Jul 2023 13:32:47 -0700 (PDT), Lasse Langwadt Christensen
wrote:

mandag den 31. juli 2023 kl. 21.58.28 UTC+2 skrev Uwe Bonnes:
Lasse Langwadt Christensen <lang...@fonz.dk> wrote:
mandag den 31. juli 2023 kl. 20.41.53 UTC+2 skrev Phil Hobbs:
Hi, all,

Just wanted to pass along a new (to me) discovery.

You know how when you try removing rosin flux with \"flux remover\" or
a polar solvent such as methanol or acetone, it leaves all this
white crap behind?

Yesterday I was in Advanced Auto Parts to get a can of Berryman B12
to clean out my fuel injectors. Just on spec, I bought a can of
Carquest brake cleaner ($8ish for a 19-oz can) to try out on my
current protos, which were getting a bit gnarly. (I picked it on the
excellent grounds that it was the cheapest.)

Stuff is unbelievable. One good spritz, followed by a bit of canned
air, and the board looks like nobody ever monkeyed with it at all.
It even left the Sharpie annotations behind.

It does have various chlorinated things in it, but man, does it ever
work. (Use it outside if you don\'t have a fume hood.)

not all brake cleaner is chlorinated

Some cleaners contain even flouric acid...

yeh real nasty stuff and at ~260\'C chlorinated brake clean makes
phosgene ..

It should be long gone out your good ventilation before getting anywhere
near 260 C, and small amounts of phosgene are not very dangerous anyhow.
I once lab tested a phosgene compressor shaft seal, and the tech who went
to the plant for installation and field test reported that the place stank
of phosgene and it made his cigarettes taste bad. Used in plastics
manufacturing, it is shipped in tank trucks placarded \"corrosive\".

Alternative brake cleaners are flammable. And not tested for flux
removal :).
Click to expand...

I think the non-chlorinated ones tend to contain acetone
 
On Tue, 1 Aug 2023 00:13:53 -0400, bitrex <user@example.net> wrote:

On 7/31/2023 5:27 PM, John Larkin wrote:
On Mon, 31 Jul 2023 14:41:36 -0400, Phil Hobbs
pcdhSpamMeSenseless@electrooptical.net> wrote:

Hi, all,

Just wanted to pass along a new (to me) discovery.

You know how when you try removing rosin flux with \"flux remover\" or a
polar solvent such as methanol or acetone, it leaves all this white crap
behind?

Yesterday I was in Advanced Auto Parts to get a can of Berryman B12 to
clean out my fuel injectors. Just on spec, I bought a can of Carquest
brake cleaner ($8ish for a 19-oz can) to try out on my current protos,
which were getting a bit gnarly. (I picked it on the excellent grounds
that it was the cheapest.)

Stuff is unbelievable. One good spritz, followed by a bit of canned
air, and the board looks like nobody ever monkeyed with it at all. It
even left the Sharpie annotations behind.

It does have various chlorinated things in it, but man, does it ever
work. (Use it outside if you don\'t have a fume hood.)

Highly recommended.

Cheers

Phil Hobbs

Do my brakes need cleaning? I\'ve never done that. How embarassing.

Seems more useful for drum brake service, I \"cleaned\" the original pads
and rotors on my Volt by replacing them and taking the old ones to the
scrap yard after ~7 years. Regeneration means they tend to last a long
time but less so in the Northeast than California.

Most of the bolts and pins are torque-to-yield so no point in cleaning
those either, they go to the scrapper also. Modern disc brakes are
pretty low-maintenance.


We have a \"vapor degreaser\" with two tanks, a boiling deflux side and
a clean distilled side. When it\'s shut down and nobody is looking and
the spray wand is off, I dunk my boards in the flux side and then the
clean side. Don\'t tell anyone!

https://www.dropbox.com/scl/fo/gga0hhl0uv38sauo7ucs8/h?rlkey=1x3twrmajyelxxpnr210thot4&dl=0


New manufacture boards should look new, but the e.g. HP service guides
I\'ve read have said that for repairs by techs they should just let the
flux lie vs. trying to scrub it off.
Click to expand...

But that\'s ugly. I like my protos all shiny.
 
On a sunny day (Mon, 31 Jul 2023 14:41:36 -0400) it happened Phil Hobbs
<pcdhSpamMeSenseless@electrooptical.net> wrote in
<2bbdc611-7a26-9894-a1e2-497fcea6bd7f@electrooptical.net>:

Hi, all,

Just wanted to pass along a new (to me) discovery.

You know how when you try removing rosin flux with \"flux remover\" or a
polar solvent such as methanol or acetone, it leaves all this white crap
behind?

Yesterday I was in Advanced Auto Parts to get a can of Berryman B12 to
clean out my fuel injectors. Just on spec, I bought a can of Carquest
brake cleaner ($8ish for a 19-oz can) to try out on my current protos,
which were getting a bit gnarly. (I picked it on the excellent grounds
that it was the cheapest.)

Stuff is unbelievable. One good spritz, followed by a bit of canned
air, and the board looks like nobody ever monkeyed with it at all. It
even left the Sharpie annotations behind.
Click to expand...

But what does it do to the inside of components?

I normally leave the rosin flux on after soldering on proto boards.
It protects and does no damage.
 
On a sunny day (Mon, 31 Jul 2023 21:33:46 -0700) it happened John Larkin
<jlarkin@highlandSNIPMEtechnology.com> wrote in
<dj2hcihnvnbqj2gch2h0rk5eec1vrfi72o@4ax.com>:

On Tue, 1 Aug 2023 00:13:53 -0400, bitrex <user@example.net> wrote:

On 7/31/2023 5:27 PM, John Larkin wrote:
On Mon, 31 Jul 2023 14:41:36 -0400, Phil Hobbs
pcdhSpamMeSenseless@electrooptical.net> wrote:

Hi, all,

Just wanted to pass along a new (to me) discovery.

You know how when you try removing rosin flux with \"flux remover\" or a
polar solvent such as methanol or acetone, it leaves all this white crap
behind?

Yesterday I was in Advanced Auto Parts to get a can of Berryman B12 to
clean out my fuel injectors. Just on spec, I bought a can of Carquest
brake cleaner ($8ish for a 19-oz can) to try out on my current protos,
which were getting a bit gnarly. (I picked it on the excellent grounds
that it was the cheapest.)

Stuff is unbelievable. One good spritz, followed by a bit of canned
air, and the board looks like nobody ever monkeyed with it at all. It
even left the Sharpie annotations behind.

It does have various chlorinated things in it, but man, does it ever
work. (Use it outside if you don\'t have a fume hood.)

Highly recommended.

Cheers

Phil Hobbs

Do my brakes need cleaning? I\'ve never done that. How embarassing.

Seems more useful for drum brake service, I \"cleaned\" the original pads
and rotors on my Volt by replacing them and taking the old ones to the
scrap yard after ~7 years. Regeneration means they tend to last a long
time but less so in the Northeast than California.

Most of the bolts and pins are torque-to-yield so no point in cleaning
those either, they go to the scrapper also. Modern disc brakes are
pretty low-maintenance.


We have a \"vapor degreaser\" with two tanks, a boiling deflux side and
a clean distilled side. When it\'s shut down and nobody is looking and
the spray wand is off, I dunk my boards in the flux side and then the
clean side. Don\'t tell anyone!

https://www.dropbox.com/scl/fo/gga0hhl0uv38sauo7ucs8/h?rlkey=1x3twrmajyelxxpnr210thot4&dl=0


New manufacture boards should look new, but the e.g. HP service guides
I\'ve read have said that for repairs by techs they should just let the
flux lie vs. trying to scrub it off.

But that\'s ugly. I like my protos all shiny.
Click to expand...

I prefer them working!
 
On Monday, July 31, 2023 at 2:41:53 PM UTC-4, Phil Hobbs wrote:
Hi, all,

Just wanted to pass along a new (to me) discovery.

You know how when you try removing rosin flux with \"flux remover\" or a
polar solvent such as methanol or acetone, it leaves all this white crap
behind?

Yesterday I was in Advanced Auto Parts to get a can of Berryman B12 to
clean out my fuel injectors. Just on spec, I bought a can of Carquest
brake cleaner ($8ish for a 19-oz can) to try out on my current protos,
which were getting a bit gnarly. (I picked it on the excellent grounds
that it was the cheapest.)

Stuff is unbelievable. One good spritz, followed by a bit of canned
air, and the board looks like nobody ever monkeyed with it at all. It
even left the Sharpie annotations behind.

It does have various chlorinated things in it, but man, does it ever
work. (Use it outside if you don\'t have a fume hood.)

Highly recommended.

Cheers

Phil Hobbs

--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC / Hobbs ElectroOptics
Optics, Electro-optics, Photonics, Analog Electronics
Briarcliff Manor NY 10510

http://electrooptical.net
http://hobbs-eo.com
Click to expand...

https://www.envirofluid.com/articles/tetrachloroethylene-a-deadly-danger-in-brake-cleaner/
 
Fred Bloggs <bloggs.fredbloggs.fred@gmail.com> wrote:
On Monday, July 31, 2023 at 2:41:53 PM UTC-4, Phil Hobbs wrote:
Hi, all,

Just wanted to pass along a new (to me) discovery.

You know how when you try removing rosin flux with \"flux remover\" or a
polar solvent such as methanol or acetone, it leaves all this white crap
behind?

Yesterday I was in Advanced Auto Parts to get a can of Berryman B12 to
clean out my fuel injectors. Just on spec, I bought a can of Carquest
brake cleaner ($8ish for a 19-oz can) to try out on my current protos,
which were getting a bit gnarly. (I picked it on the excellent grounds
that it was the cheapest.)

Stuff is unbelievable. One good spritz, followed by a bit of canned
air, and the board looks like nobody ever monkeyed with it at all. It
even left the Sharpie annotations behind.

It does have various chlorinated things in it, but man, does it ever
work. (Use it outside if you don\'t have a fume hood.)

Highly recommended.

Cheers

Phil Hobbs

--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC / Hobbs ElectroOptics
Optics, Electro-optics, Photonics, Analog Electronics
Briarcliff Manor NY 10510

http://electrooptical.net
http://hobbs-eo.com

https://www.envirofluid.com/articles/tetrachloroethylene-a-deadly-danger-in-brake-cleaner/
Click to expand...

But the crappy allegedly-green stuff is just full of that terrifying
chemical dihydrogen monoxide!

--
Dr Philip C D Hobbs Principal Consultant
ElectroOptical Innovations LLC / Hobbs ElectroOptics Optics,
Electro-optics, Photonics, Analog Electronics
 
Jan Panteltje <alien@comet.invalid> wrote:
On a sunny day (Mon, 31 Jul 2023 14:41:36 -0400) it happened Phil Hobbs
pcdhSpamMeSenseless@electrooptical.net> wrote in
2bbdc611-7a26-9894-a1e2-497fcea6bd7f@electrooptical.net>:

Hi, all,

Just wanted to pass along a new (to me) discovery.

You know how when you try removing rosin flux with \"flux remover\" or a
polar solvent such as methanol or acetone, it leaves all this white crap
behind?

Yesterday I was in Advanced Auto Parts to get a can of Berryman B12 to
clean out my fuel injectors. Just on spec, I bought a can of Carquest
brake cleaner ($8ish for a 19-oz can) to try out on my current protos,
which were getting a bit gnarly. (I picked it on the excellent grounds
that it was the cheapest.)

Stuff is unbelievable. One good spritz, followed by a bit of canned
air, and the board looks like nobody ever monkeyed with it at all. It
even left the Sharpie annotations behind.

But what does it do to the inside of components?
Click to expand...

Metal, fully-dense ceramic and 100% cross linked Novolac epoxy?

Not a lot.

I normally leave the rosin flux on after soldering on proto boards.
It protects and does no damage.
Click to expand...

It gets in the way of subsequent mods, which makes the proto get flaky much
sooner. Besides, it’s ugly.

Cheers

Phil Hobbs



--
Dr Philip C D Hobbs Principal Consultant
ElectroOptical Innovations LLC / Hobbs ElectroOptics Optics,
Electro-optics, Photonics, Analog Electronics
 
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