foxtrapper
New member
I'd mentioned I'd been doing some tests of Klasse SG out of personal curiousity. Some of you expressed interest in updates before I was finished. I'm not done testing, but what I've found so far is rather interesting, so I thought I'd go ahead and put it up.
As a bit of background information, for several years I worked as a test lab engineer for Black & Decker. I'm familiar with test lab proceedures. Repeatability is the holy grail. That way the data can be verified by others or retested consistently. This does mean sometimes that testing doesn't duplicate "real world" but is instead "test lab" conditions. Bear that in mind. These tests are for specific qualities, and are not all inclusive. They are also designed to be able to be duplicated by anyone here on this board.
The testing is not finished, I've got some more things I intend to do. But as I said, the results so far are rather interesting, and honestly, not what I expected.
Klasse SG test
Test #1
Purpose: To compare immediate wipe off vs. 24-hour wait wiping of layers of SG.
Method: SG was applied to clean plate glass with a paper towel. Areas were taped off in the grid outline described below. Areas were taped off with black electrical tape. Numbers indicate the numbers of layers applied. Normally 3 drops of SG were applied to a clean paper towel for each application.
Grid layout:
Immediate wipe.......24-hour wait
5..............................5
3..............................3
1..............................1
Observations:
Application
The immediate wipe areas would have SG applied. A wait of approximately one minute would take place, the area would be wiped with a clean paper towel, and a subsequent layer would be applied. This rate of application would continue until the number of layers had been applied.
The 24-hour wait areas would have SG applied as above. A 24-hour wait would take place and then the area would be wiped clean with a paper towel. A subsequent layer would then be applied. This rate of application would continue until the number of layers had been applied.
SG would âہ“smokeâ€Â� after approximately 3-10 seconds, indicating that a volatile or other evaporative substance had dissipated. This would take place a few seconds after discontinuing wiping. Applying thicker layers (no precision) would show similar results, though it would take several additional seconds to minutes, depending on how thickly the SG was applied. Once this âہ“smokingâ€Â� took place, the product on the glass plate was immovable.
Polishing
The areas that were wiped immediately were easily polished. Those with the 24-hour wait were slightly more difficult. Areas that had thicker applications of SG were progressively more difficult to polish. Symptoms were similar to crusting of carnauba wax. Both types of areas would polish to an invisible shine.
Opacity
SG dried and polished to perfect visual opacity, and was completely undetectable to the eye. This held true in all areas, regardless of the layering.
Layering
Upon completion of applying all the layers to the glass plate, the tape was removed in order to measure the thickness of SG over the glass. The plan was to measure the height at the edge where the tape had been using depth gauges and magnification. A scraping of the SG and a thickness measurement of the scraping was also planned.
This proved to be impossible because upon wiping the glass with a paper towel all detectable signs of these edges disappeared, and scraping with a razor blade could raise no SG shavings. Razor blades scraping produced minute quantities of âہ“dustâ€Â�, and the quantities of âہ“dustâ€Â� were visually identical in all areas. It would appear that no buildup of SG took place in spite of the multiple applications and two differing application techniques.
Touch test
Immediately after the application of the 5 layers, and before the tape was removed, the surfaces were wiped and polished with a paper towel. A touch test of the surfaces was performed, comparing them to the adjacent clean glass. The results of this touch test are:
1 layer gave a mildly more slippery feel than bare glass, but was inconsistent over the surface.
3 layers gave a more slippery feel than one layer, and were consistent over the entire surface.
5 layers felt exactly like the 3 layers.
There was no discernable difference visually or by touch between areas immediately wiped and those areas with the 24-hour delay.
Upon removal of the electrical tape separating the test areas, and polishing the entire surface with a paper towel, it was impossible to detect the difference between the areas where SG had been applied and those areas it had not.
Conclusion
1. There is no advantage or difference in waiting 24 hours between layers vs applying layers immediately.
2. Layering does not appear to build up the quantity of SG over the substrate.
3. Layering does appear to âہ“fill in gapsâ€Â�.
Test #2
Purpose: To test dissolvability of dried SG.
Method: SG was poured into the depression on the bottom of an inverted Dannon yogurt container. A puddle approximately 2mm thick was created. This was allowed to dry for 24 hours.
Observations:
At the end of 24 hours the SG had dried to a hard thin layer on the bottom of the container. The various lettering and symbols on the bottom of the container were clearly visible, though slightly blurred. This layer of SG was flexible as when the container was flexed to remove the solid SG, it did not crack or otherwise âہ“popâ€Â� out. The SG was clearly visible (as opposed to the glass plate results from test #1).
Dry wiping
Dry wiping with a paper towel resulted in no material transfer or effect on the SG. Even when done vigorously, no change resulted.
Wet wiping
A saliva-dampened finger was rubbed over the dried SG. The SG immediately became slippery, and over the course of approximately 5 seconds it completely dissolved, leaving a white tacky residue on the fingertip. Wiping the wet SG area with a dry paper towel resulted in complete transfer of the SG. Visual examination of the container in this area showed no SG remaining.
Other solvents
No other solvents were tested.
Conclusion
1. SG is water soluble, even when dried or âہ“curedâ€Â�.
As a bit of background information, for several years I worked as a test lab engineer for Black & Decker. I'm familiar with test lab proceedures. Repeatability is the holy grail. That way the data can be verified by others or retested consistently. This does mean sometimes that testing doesn't duplicate "real world" but is instead "test lab" conditions. Bear that in mind. These tests are for specific qualities, and are not all inclusive. They are also designed to be able to be duplicated by anyone here on this board.
The testing is not finished, I've got some more things I intend to do. But as I said, the results so far are rather interesting, and honestly, not what I expected.
Klasse SG test
Test #1
Purpose: To compare immediate wipe off vs. 24-hour wait wiping of layers of SG.
Method: SG was applied to clean plate glass with a paper towel. Areas were taped off in the grid outline described below. Areas were taped off with black electrical tape. Numbers indicate the numbers of layers applied. Normally 3 drops of SG were applied to a clean paper towel for each application.
Grid layout:
Immediate wipe.......24-hour wait
5..............................5
3..............................3
1..............................1
Observations:
Application
The immediate wipe areas would have SG applied. A wait of approximately one minute would take place, the area would be wiped with a clean paper towel, and a subsequent layer would be applied. This rate of application would continue until the number of layers had been applied.
The 24-hour wait areas would have SG applied as above. A 24-hour wait would take place and then the area would be wiped clean with a paper towel. A subsequent layer would then be applied. This rate of application would continue until the number of layers had been applied.
SG would âہ“smokeâ€Â� after approximately 3-10 seconds, indicating that a volatile or other evaporative substance had dissipated. This would take place a few seconds after discontinuing wiping. Applying thicker layers (no precision) would show similar results, though it would take several additional seconds to minutes, depending on how thickly the SG was applied. Once this âہ“smokingâ€Â� took place, the product on the glass plate was immovable.
Polishing
The areas that were wiped immediately were easily polished. Those with the 24-hour wait were slightly more difficult. Areas that had thicker applications of SG were progressively more difficult to polish. Symptoms were similar to crusting of carnauba wax. Both types of areas would polish to an invisible shine.
Opacity
SG dried and polished to perfect visual opacity, and was completely undetectable to the eye. This held true in all areas, regardless of the layering.
Layering
Upon completion of applying all the layers to the glass plate, the tape was removed in order to measure the thickness of SG over the glass. The plan was to measure the height at the edge where the tape had been using depth gauges and magnification. A scraping of the SG and a thickness measurement of the scraping was also planned.
This proved to be impossible because upon wiping the glass with a paper towel all detectable signs of these edges disappeared, and scraping with a razor blade could raise no SG shavings. Razor blades scraping produced minute quantities of âہ“dustâ€Â�, and the quantities of âہ“dustâ€Â� were visually identical in all areas. It would appear that no buildup of SG took place in spite of the multiple applications and two differing application techniques.
Touch test
Immediately after the application of the 5 layers, and before the tape was removed, the surfaces were wiped and polished with a paper towel. A touch test of the surfaces was performed, comparing them to the adjacent clean glass. The results of this touch test are:
1 layer gave a mildly more slippery feel than bare glass, but was inconsistent over the surface.
3 layers gave a more slippery feel than one layer, and were consistent over the entire surface.
5 layers felt exactly like the 3 layers.
There was no discernable difference visually or by touch between areas immediately wiped and those areas with the 24-hour delay.
Upon removal of the electrical tape separating the test areas, and polishing the entire surface with a paper towel, it was impossible to detect the difference between the areas where SG had been applied and those areas it had not.
Conclusion
1. There is no advantage or difference in waiting 24 hours between layers vs applying layers immediately.
2. Layering does not appear to build up the quantity of SG over the substrate.
3. Layering does appear to âہ“fill in gapsâ€Â�.
Test #2
Purpose: To test dissolvability of dried SG.
Method: SG was poured into the depression on the bottom of an inverted Dannon yogurt container. A puddle approximately 2mm thick was created. This was allowed to dry for 24 hours.
Observations:
At the end of 24 hours the SG had dried to a hard thin layer on the bottom of the container. The various lettering and symbols on the bottom of the container were clearly visible, though slightly blurred. This layer of SG was flexible as when the container was flexed to remove the solid SG, it did not crack or otherwise âہ“popâ€Â� out. The SG was clearly visible (as opposed to the glass plate results from test #1).
Dry wiping
Dry wiping with a paper towel resulted in no material transfer or effect on the SG. Even when done vigorously, no change resulted.
Wet wiping
A saliva-dampened finger was rubbed over the dried SG. The SG immediately became slippery, and over the course of approximately 5 seconds it completely dissolved, leaving a white tacky residue on the fingertip. Wiping the wet SG area with a dry paper towel resulted in complete transfer of the SG. Visual examination of the container in this area showed no SG remaining.
Other solvents
No other solvents were tested.
Conclusion
1. SG is water soluble, even when dried or âہ“curedâ€Â�.
.