Yesterday I was doing the voiceover for the video when I saw your thread go up, crazy timing! The video isn`t a direct response to your results, although some of the topics I touched on will be relevant to what you`re noticing. It is a caution for any manufacturer to attempt to use a gloss meter to paint a black and white picture of performance with regards to gloss enhancement of individual products, without the viewer understanding the variables that affect measurements.
Your older meter I`m pretty sure was in the $2000+ range when it was new, which is still a very accurate meter. I have the non-haze version of it, which was working for a while after I picked it up before it died out on me. It was a great meter too because these newer ones take more time to spit the gloss results out, the older models were practically instant readings.
You should notice a boost in the gloss readings after the first wash with N-914. The example that I did with the heavy buffing, to me this highlights that my first post-application measurements with the meter is practically irrelevant for certain products. If a manufacturer took one of their sealants, put it up against a competing sealant known to be much heavier and ran side by side gloss testing, it would be very easy for them to paint a picture of performance that at first glance is indisputable. But the wipeability of a product in the short term does not paint a full picture of the product`s actual gloss performance.
Another topic is take Pinnacle Souveran as a hypothetical example. I put it on the paint before a car show, and I`ve reduced the gloss based on the measurements. However, after the show the next day I go out to wash the paint and the gloss readings are back up. But to me, the paint looked better the previous day during the show. The meter tells me I`ve removed the impact of the oils left behind that may be responsible for giving Souveran its advantage in appearance subjectively. Now as a tester, what reading should I report to the viewer? The post-application reading of Souveran where the measurement was lower than the pre-wax readings, the result of which is partially dependent on how much effort I put into buffing it off the paint? Or the higher post-wash readings which no longer necessarily represents the advantages in appearance that Souveran has over other products subjectively? This is a dilemma in gloss measurement testing.
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