I feel this is entertaining, interesting and fun. My intended tone here is not argumentative.
I didn't think there would be any interest in the science of this topic. I genuinely thought people wanted big picture ideas.
I feel my key point has been overlooked. Even if all the science in the world suggests oiling chips increases value, desirability, longevity and whatever else, will other people actually do it? Would you recommend this practice? Would you do it?
Below I have included some science discussion, feel free to just skip it and move on with your life.
Exactly what claims are made about properly oiled chips? Appearance improvement, resisting contamination, ease of cleaning, prevent staining, decrease wear, preserving the chip...? I'm not trying to zero anyone out here, but if you want your chips to look like casino chips, would you not just take some black watercolor paint and weather them? In my experience most of them are just filthy.
Does applying mineral oil to a static (unused) poker chip help preserve it? To answer this we need a well thought out scientific study and set some limitations of this study. We would then conduct experiments, see what those data support and make a conclusion. The mobile nature of mineral oil suggests we would have to apply it regularly. If I were to conduct this study my hypothesis would be that mineral oil does not prolong the life of an unused poker chip. What do you think? What would cause a well made poker chip to degrade? Oxidation? Biological contamination leading to biological breakdown? Volatility of parent material?
What about an oiled chip for use? Will an oiled chip have a significantly longer usable life than an oil free chip?
If so, what are the economic costs of maintaining the set versus replacing the set? (time vs money)
I'll leave appearance and feel alone here, the science behind these seems as simple as creating statistical model of people's preferences.
I agree mineral oil offers a form of protection from staining but some science needs to be clarified. I think we are on the same page.
A hydrocarbon soluble solution will permeate a hydrocarbon solution. So a hydrocarbon soluble solution, such as Oil Red O, (I expect laughter now, as this is more likely to be found in a pathology lab than EVER at a poker table) will stain the oil on your chip and depending on the specific surface area and cation exchange capacity of your chip, you might have just ruined a chip. For those not familiar, mineral oil is a hydrocarbon solution. Remember those dyes, such as Oil Red O, will permeate mineral oil. So rather than warding off stains, mineral oil CAN be used as a highway for stains. Like I said, just clarifying the science. It depends on the chip.
So, being pedantic, mineral oil will likely protect your chip from water soluble contaminates that may stain your chip otherwise. Not so for ALL staining. (again laugh track goes here as this is a very scientifically true statement, just very pedantic) Unless you happen to have wax or fat staining products at the poker table, this is just ridiculous, but hey, it's science! There is also the chance, again study needed, that a water based stain may occur if mineral oil is displaced by a water based product.
Now let’s look at our newly formed hypothesis, “Applying mineral oil to a chip protects it from stains.” How would you create a study to support this? Should I make a video?
Clays used in plastic have a specific surface area. This is one of many reasons clay is used in plastic production. Any material that comes along with a higher specific surface area will actually cling to the oil more than your chip. When you wipe it off, the mineral oil goes with it. Any dust or dirt with a specific surface area less than the chip will cling, but not remove the oil (This based on the assumption there is not excessive oil on the chip). Without mineral oil, you could likely blow or dust that material off. What about contaminates that have a tendency to cling to high specific surface areas? Take bubble gum for example. If that surface area on the chip is flooded with oil, it is unlikely the gum would find the surface area it needs to stick.
Back to the hypothesis. Applying mineral oil to a chip prevents contamination. In other words, it keeps your chips clean. Okay, that is quite a study setup there, and any data might not apply to your specific situation. I also recall reading a chemical engineering article about use of bleached earth (clay) to remove contaminates from mineral oil. This suggests any contaminates in the mineral oil will more likely remain with your chip than with the oil when the chip is wiped down. Again, this is multifactorial.
The second hypothesis, Applying mineral oil to a chip eases cleaning. Wow, this also gets complex quickly. Are we talking time-and-motion studies? What is the threshold of easy? What is the threshold of clean? This is one subject that seems will end in a poll. Do you want to wipe down your chips or dust them off? Do you want to wipe them down monthly, or wash them yearly? This all comes down to how often they are used, your threshold for ‘clean,’ and personal preference.
My post about barrier layers reducing wear might also make an interesting study about oiling chips. This seems like a good one as reducing wear may increase the life of heavily used chips. The second hypothesis is that a worn chip will wear less than a new chip.
Another specific hypothesis I haven’t seen, “Applying mineral oil to chips keeps gaming surfaces cleaner as the oiled chips pick up dirt and dust on the surface.”
Yet another, "Applying mineral oil to your poker chips decreases dryness in fingers and hands."
If anyone has any more please post.
As scientists we would have to ask ourselves some big picture questions.
What value, if any, is gained by applying oil to poker chips?
How does oiling chips affect the physical dynamics of the chips? (cleanliness, longevity...)
What economical factors come into play with chips sets that are oiled vs sets that are not oiled? (Time spent cleaning, oiling, washing...)
Aside from physical dynamics, what is gained from oiling chips? I offer thoughts of physiological effects such as being meditative, fun, relaxing and fulfilling. Is there a social element at play here?
I have an exercise.
Person A: "It is soothing, relaxing and hey, I love poker chips! Lets oil them all, twice a year!"
Person B: "I understand oiling chips increases longevity, but I'd just do it for looks. Whatever, not worth my time! I'm getting a bowl of Kale and watching Gone With The Wind right now."
Common core test question:
"Which won of the too persens above are korrect?"
A) A
B) B
C) A & B
D) Neither A Nor B but one from below
E) If a train leaves Chicago at exactly 1:33 PM heading west, and at 8:00 AM a rickshaw leaves central park heading Northish, what does that tell us about Doyle Brunson's hand?
F) B & C
G) F & D
H) I J K
I) M&M's are a yummy
I could make a video showing some of this if anyone cares. I thought a quick big picture video about a common question I got about oiling China clays would suffice but it seems I’ve opened a can of worms. As you can see from scratching the surface of the science behind it and the subjective nature of the topic, this debate is far from ending, ever.
I feel it definitely does depend on the chip and the person. Remember, clay is not uncommon in many plastics. Look at this
In addition to preserving strength at high temperatures, the addition of clay improves a plastic's barrier properties, i.e., its ability to hold gases and liquids in, or to keep them out.
http://news.psu.edu/story/140723/2003/01/01/research/clay-plastic
The correct answer to the question, “should I oil my chips?” is up to you not “facts” or “science.” It’s all just boiled guitar strings.

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