Diamond Emulsion VS Stropping Paste
- This topic has 28 replies, 6 voices, and was last updated 04/03/2017 at 10:25 am by
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A Dutch dictionary defines and emulsion as a “concept from the chemistry with which a mixture is meant which consists of immiscible liquids which do not form stable and homogeneous mixture under normal conditions.” It seems to be the same as a spray… Is there anyone who can confirm this?
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I think the reason there is a difference in the way they are described is that they come from two manufacturers (Jende and Ken Schwartz). Both brands are emulsions that are dispensed by a pump actuated spray bottle. The definition of emulsion that you cited is correct. The study of emulsions is not an area in which I specialize, but I am a chemist.
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… Jende does make a difference between sprays and emulsion (see this page – at the bottom). And how do you know these emulsions come from Jende? I didn’t know he (Tom) made this stuff too. …
Jende makes a distinction between products that “stay mixed” (the emulsion line) vs. products that “need to be shaken” prior to use (sprays). I’m guessing one is oil based and the other is water based. (Don’t know if this is the real definition of “emulsion”, but that’s the difference).
And yes, Jende makes their own line of products now.
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The particles in the sprays do settle and need to be shaken to mix them up and the emulsions do a better job of staying mixed but can also settle. Emulsions, as they are provided by Jende and Ken Schwartz, are gels with a consistency of hand sanitizer. I’ve tested the emulsions from Jende quite a bit and they are really good. I’ve got samples from Ken as well that I’m planning on testing but haven’t found the time yet. The paste works well and is very affordable but does not work as well as the emulsions.
-Clay
Clay’s answer clarifies the matter. I do have the 4 micron / 2 micron diamond emulsions from Jende but I don’t have any experience with the sprays so I didn’t know that the diamonds settle with those products. Since an emulsion is a mixture of non-miscible materials that does not rapidly separate, the diamond sprays are not emulsions and would be better classified as suspensions.
My professional experience with emulsions is that I occasionally encounter them when I’m trying to separate the layers of a water / oil mixture. Obtaining an emulsion in that scenario means you’re going to have an unfortunate day ahead of you.
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The major differences between the Jende Sprays vs. Jende Emulsions are the obvious liquid of the sprays vs. the cream-like consistency of the emulsions. As previously mentioned, the sprays do settle more readily than the emulsions. The emulsions will also eventually settle, but at a much slower rate. Either way, a good shake before use can never hurt 🙂 Aside from that, the real difference is the Jende emulsions have a higher concentration than the sprays. Both Jende products are water based and use the same poly diamonds.
Since the next question will inevitably be about Jende vs. Schwartz, the quality of both Jende and Schwartz’s names speak for themselves. Most notable is the alcohol content of the Jende emulsion base/evaporant is far lower than that of the Schwartz emulsions, which has a high level of alcohol.
Hey Tom, good to see you’re still alive here! The next question is not about Tom vs. Ken
, but about poly-diamond vs. mono-diamond. Can you tell us what the exact difference is and how (and whether) poly-diamond works better than mono-diamond. I thought the now non-existant (?) HA-products, which were always the golden standard, were mono-diamond.Molecule Polishing: my blog about sharpening with the Wicked Edge
lol…Thanks, Mark!
The difference between the two is mono is more consistently shaped – like a pyramid, cube or rectangle, which cuts more linearly, kind of like one scratch per piece of diamond. Poly is shaped more like popped popcorn, with many facets in all directions, so it scratches more times per piece of diamond in the same space.
According to google:
Polycrystalline Diamond has many more cutting surfaces per particle, resulting in higher removal rates. As it cuts, it breaks down in its original shape, allowing for finer finishes in less time than when using monocrystalline diamond. Because polycrystalline has no cleavage planes, it cannot splinter like monocrystalline diamond. It causes less sub-surface deformation, and is excellent when polishing samples composed of different materials/hardness.
Monocrystalline – Monocrystalline Diamond provides a cost effective means for good stock removal and finish. It has a slightly irregular shape with multiple cutting edges, and is recommended for general applications where polycrystalline’s features are not required.
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