test
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----- Original Message -----Sent: Tuesday, October 21, 2014 10:12 AMSubject: Re: [atlas_craftsman] Truth about Purple cleaner actual testI am very willing to believe that the Purple cleaner has only a slight reaction with bare Aluminum over a reasonably short time, ie cleaning but not prolonged submersion with a large volume of cleaner.That said, it is possible that the cleaner in the experiment only removed the plastic on both sides? If the plastic is on both sides its removal might explain the difference in pre/post test measurements?Might be interesting to repeat with a non coated sample?Whit
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Yes, it may have a 'skim coat" of plastic on it. But not enough plastic to bother the test, since the foil, after a slight delay as the plastic was apparently penetrated, was visibly covered by bubbling solution on each side. Obviously the plastic coating, if present, was not affecting the test.There WAS measurable removal of material, and therefore we can confidently say that the cleaner was contacting the aluminum, since we know that it does react with aluminum, and would expect to see evidence of that. The bubbling, material removal, and foam on both sides of the material during the test verify that the plastic was not preventing the reaction.It took approximately 20 to 30 seconds for the cleaner to penetrate the plastic and begin vigorous bubbling.Jerry----- Original Message -----Sent: Tuesday, October 21, 2014 7:13 AMSubject: Re: [atlas_craftsman] Truth about Purple cleaner actual testAluminum foil is actually a bit of foil covered with thin plastic on each side. I don't know what this means to your test, thank you for doing it, but thought I'd mention it.Rick H
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----- Original Message -----Sent: Tuesday, October 21, 2014 7:13 AMSubject: Re: [atlas_craftsman] Truth about Purple cleaner actual testAluminum foil is actually a bit of foil covered with thin plastic on each side. I don't know what this means to your test, thank you for doing it, but thought I'd mention it.Rick H
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There has been a lot of comment and hyperventilation about how purple
cleaner and its relatives will eat aluminum parts. I say it doesn't, and I
decided to do a test.
Aluminum foil seemed to be a good subject for a test, it's thin, and might
provide dramatic photos of the foil eaten right up to the "water line".
Well, don't get excited, it wasn't very dramatic.
I filled a small yogurt cup (chobani greek, if it matters, 6 oz size) about
half full of undiluted purple cleaner (Zep Industrial Purple Cleaner from
Home Depot). A square of standard aluminum foil (2.25" x 2.35") was
immersed approximately halfway in the purple cleaner. Aluminum foil was
measured to be 1.8 thou thick, using a Mitutoyo 1" micrometer.
After 20 seconds or so, it began to foam up, and looked like this
http://smg.photobucket.com/user/jstanley/media/purpleclean1_zps3aa3fccf.jpg.html
I waited 10 minutes, after which not much seemed to be happening, and
removed the aluminum foil.
The remaining cleaner in the cup had a very substantial "head" on it.
http://smg.photobucket.com/user/jstanley/media/purpleclean2_zps8c4aeb1f.jpg.html
The aluminum foil was visibly complete, and after washing it was not visibly
affected by its immersion.
http://smg.photobucket.com/user/jstanley/media/purpleclean3_zpsfd7d5ffc.jpg.html
The immersed portion measured at approximately 1.2 thousandths of an inch
thick at the thinnest part, and the non-immersed part ws confirmed at 1.8
thou. The difference was 6 ten-thousandths of an inch.
Another piece of foil was immersed in the remaining purple cleaner, and did
show some bubbling, but nothing like the original thick "head" was present
after several minutes.
What I get from this is that if about 3 oz of the purple cleaner can remove
only 3 ten-thousandths of an inch thickness from each side of a piece of
aluminum foil in ten minutes of soaking, and is apparently substantially
exhausted in doing that, it is extremely unlikely to do any measurable
damage to your machine parts in any reasonable cleaning process involving
repeated dunking, scrubbing, and rinsing.
I think a good cleaning does not have to include this process, but if you
choose to use the lye-based Purple cleaners, you may do a normal sort of
cleaning (no extended soaking) without fear
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There has been a lot of comment and hyperventilation about how purple
cleaner and its relatives will eat aluminum parts. I say it doesn't, and I
decided to do a test.
Aluminum foil seemed to be a good subject for a test, it's thin, and might
provide dramatic photos of the foil eaten right up to the "water line".
Well, don't get excited, it wasn't very dramatic.
I filled a small yogurt cup (chobani greek, if it matters, 6 oz size) about
half full of undiluted purple cleaner (Zep Industrial Purple Cleaner from
Home Depot). A square of standard aluminum foil (2.25" x 2.35") was
immersed approximately halfway in the purple cleaner. Aluminum foil was
measured to be 1.8 thou thick, using a Mitutoyo 1" micrometer.
After 20 seconds or so, it began to foam up, and looked like this
http://smg.photobucket.com/user/jstanley/media/purpleclean1_zps3aa3fccf.jpg.html
I waited 10 minutes, after which not much seemed to be happening, and
removed the aluminum foil.
The remaining cleaner in the cup had a very substantial "head" on it.
http://smg.photobucket.com/user/jstanley/media/purpleclean2_zps8c4aeb1f.jpg.html
The aluminum foil was visibly complete, and after washing it was not visibly
affected by its immersion.
http://smg.photobucket.com/user/jstanley/media/purpleclean3_zpsfd7d5ffc.jpg.html
The immersed portion measured at approximately 1.2 thousandths of an inch
thick at the thinnest part, and the non-immersed part ws confirmed at 1.8
thou. The difference was 6 ten-thousandths of an inch.
Another piece of foil was immersed in the remaining purple cleaner, and did
show some bubbling, but nothing like the original thick "head" was present
after several minutes.
What I get from this is that if about 3 oz of the purple cleaner can remove
only 3 ten-thousandths of an inch thickness from each side of a piece of
aluminum foil in ten minutes of soaking, and is apparently substantially
exhausted in doing that, it is extremely unlikely to do any measurable
damage to your machine parts in any reasonable cleaning process involving
repeated dunking, scrubbing, and rinsing.
I think a good cleaning does not have to include this process, but if you
choose to use the lye-based Purple cleaners, you may do a normal sort of
cleaning (no extended soaking) without fear
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There has been a lot of comment and hyperventilation about how purple
cleaner and its relatives will eat aluminum parts. I say it doesn't, and I
decided to do a test.
Aluminum foil seemed to be a good subject for a test, it's thin, and might
provide dramatic photos of the foil eaten right up to the "water line".
Well, don't get excited, it wasn't very dramatic.
I filled a small yogurt cup (chobani greek, if it matters, 6 oz size) about
half full of undiluted purple cleaner (Zep Industrial Purple Cleaner from
Home Depot). A square of standard aluminum foil (2.25" x 2.35") was
immersed approximately halfway in the purple cleaner. Aluminum foil was
measured to be 1.8 thou thick, using a Mitutoyo 1" micrometer.
After 20 seconds or so, it began to foam up, and looked like this
http://smg.photobucket.com/user/jstanley/media/purpleclean1_zps3aa3fccf.jpg.html
I waited 10 minutes, after which not much seemed to be happening, and
removed the aluminum foil.
The remaining cleaner in the cup had a very substantial "head" on it.
http://smg.photobucket.com/user/jstanley/media/purpleclean2_zps8c4aeb1f.jpg.html
The aluminum foil was visibly complete, and after washing it was not visibly
affected by its immersion.
http://smg.photobucket.com/user/jstanley/media/purpleclean3_zpsfd7d5ffc.jpg.html
The immersed portion measured at approximately 1.2 thousandths of an inch
thick at the thinnest part, and the non-immersed part ws confirmed at 1.8
thou. The difference was 6 ten-thousandths of an inch.
Another piece of foil was immersed in the remaining purple cleaner, and did
show some bubbling, but nothing like the original thick "head" was present
after several minutes.
What I get from this is that if about 3 oz of the purple cleaner can remove
only 3 ten-thousandths of an inch thickness from each side of a piece of
aluminum foil in ten minutes of soaking, and is apparently substantially
exhausted in doing that, it is extremely unlikely to do any measurable
damage to your machine parts in any reasonable cleaning process involving
repeated dunking, scrubbing, and rinsing.
I think a good cleaning does not have to include this process, but if you
choose to use the lye-based Purple cleaners, you may do a normal sort of
cleaning (no extended soaking) without fear
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Mathieu,
Both Yahoo delays and/or moderation might lead you to believe that
your first post didn't work. It did.
Donald
On 17 Oct 2014 18:00:53 -0700, "mathg465b@yahoo.com [Amateur-repairs]"
<Amateur-repairs@yahoogroups.com> wrote:
>sorry testing, previous new topic did not work.
>
>[Non-text portions of this message have been removed]
>
>
>
>---
>This email is free from viruses and malware because avast! Antivirus protection is active.
>http://www.avast.com
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sorry testing, previous new topic did not work.
[Non-text portions of this message have been removed]
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