Flattening Kem Cards/Acetate Cards - Did I Solve the Mystery? (2 Viewers)

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As many know I own a lot of cards from a lot of manufacturers…,Almost all of them. I came to collect so many trying to find an alternative to my hands down favorite card - Kem…but without the tendency to bow if not stored a certain way.

I haven’t recommended Kem for many years because of their price…but if you have them already…

IMO, there was nothing on the market years ago that could compare. Now, I’ve found Angels to be very very close…but they are hard to get and only come in one style (in acetate).

Recently there was a thread started by @maxim_666666 where he used warm water to flatten Modiano Acetate cards.
https://www.pokerchipforum.com/threads/how-to-make-acetate-cards-flat.127029/

I was interested in seeing of this would work on Kems…the most used cellulose acetate card in the US and basically the casino standard. I was skeptical it would work with Kems as they tend to bow when exposed to humidity.

Well, it doesn’t work. They stayed flat for about an hour then crinkles like potato chips. DO NOT put Kems in water!

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Instead i tried to come up with a method using dry heat but clamped similar to what @maxim_666666 did. I noticed that my Breville toaster oven went down to 120F…so I found small aluminum stock and small clamps on Amazon and went to work

I used 2002 era use casino Kems I got that came bowed back in 2003. They were unplayable but I had kept them in case I ever fingered out a way to flatten them. Now - one thing to consider is that these cards could have taken a bow for traditional reasons and/or from being heavily shuffled by hand….so maybe not the most ideal samples to work with.

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I found the setup would fit inside two baking pans that came with the oven so I clam shelled them inside as I thought is would proved a more gentle and even application of heat. I “cooked” them at 130F for an hour and a half.

I waited a couple hours to cool and took them out…..they were FLAT! They shuffled great however I did notice they had slightly less snap.

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I was so excited to post my results here but decided to wait a couple days to see how they held up. Well they held up OK but not perfect.

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Before the heat treatment they were terribly bowed along the “equator” so to speak. They remained flat but I noticed on day two they had taken a slight bow from pole to pole. This looks far more pronounce in this photo on a flat surface than when you handle them. They shuffle well and are now playable…but they are not perfectly flat. They dont have the “click” though you would expect so I think the heat definitely impacted the material.

I have one non casino used 2006 deck I found with a very slight bow and will try with those to see if the results are better.

Not perfect …but WAY better. I may experiment with a slightly higher temp …or longer “cooks”
 
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A for the effort and research done by the OP but I think avoiding KEMs is still an easier and smarter move.
Uhhh…but that doesn’t help if you have them now. This is obviously for people who already have them. There are many here that have decks already that bowed.

I haven’t bought new Kim cards since probably 2019 and I’ve never spent more than $23 maximum. When they were on sale on Amazon, I’d pick them up, once for as little as $12. They haven’t been on sale in years and now are 50 or $60.

I store them upside down with the cut card and dealer button on top. I told people about this many years ago. I have 12 decks that are completely flat and have remained so since it’s far back is 2007.
 
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KEM fans would rather bake their cards like garlic bread over just admitting they aren't that great.
Pretty pointless comment. You should also let every Vegas and AC casino know so they stop wasting their money.:rolleyes:

They are for many the best feeling card made by far. Store them upside down with a cut card on top and they stay flat from the beginning. Pretty easy.

Also, Kems are not the only card that does this. I have cards from many manufacturers that have taken a slight bow. Acetate cards seem to do it more but I have Gemaco Superflex, a favorite of many here, that have a bow
 
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I also love kem cards, so I very much appreciate the info. Haven't tried to flatten them. I have some old casino used sets I'm thinking about experimenting with.
 
Thanks for posting your experience.
Did you try this with curved plates, to give them a counter-bow, like Mika did?

If this is the result, i‘m not convinced…

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It looks more like a deck before the treatment.
Good luck!
 
Pretty pointless comment. You should also let every Vegas and AC casino know so they stop wasting their money.:rolleyes:

They are for many the best feeling card made by far. Store them upside down with a cut card on top and they stay flat from the beginning. Pretty easy.

Also, Kems are not the only card that does this. I have cards from many manufacturers that have taken a slight bow. Acetate cards seem to do it more but I have Gemaco Superflex, a favorite of many here, that have a bow
What does upside down mean? The bowed side is facing up instead of down?
 
Thanks for posting your experience.
Did you try this with curved plates, to give them a counter-bow, like Mika did?

If this is the result, i‘m not convinced…

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It looks more like a deck before the treatment.
Good luck!
They didn’t look like that until 48 how’s after…and again the pic makes it look a little worse than in real life. They are also bending along the north south axis which makes them playable. I did another deck and it’s not as apparent

Also, these were casino used decks that probably were shuffled a thousands of times. Maybe not the best sample set but they are the only set of Kem cards that I have outside the one arrow deck that actually warped. I’ve kept all my Kem cards perfectly flat by storing them the way I described.

The heat definitely takes snap out of the plastic so I don’t think this is a total fix. It did make a completely unusable deck usable. This also only cost me around $15 and took an hour.
 
As much trouble maintaining Kems are and how much they cost, I guess you gotta keep trying wacky shit to keep from just throwing them in the trash. ;)
If you think keeping a cut card on top is “trouble” than yeah I guess. These comments have all been said 100 times. I was trying to pose a possible fix for people that have this issue. The decks of Kems that I actually use are perfectly flat and have been that way…from 6-22 years. I have a 2003 that is flat and stayed that way for years before I heard of the storage hack.


BTW, I do this on a lot of my cards other than KEM. Many others take a bow. Kems are just the ones that can talk about popular. The thread that inspired this was actually trying to fix Modiano cards.
What does upside down mean? The bowed side is facing up instead of down?
No, the opposite. Humidity usually bows them that way. Heavy use usually the other. You see this in a lot of pokers blogs filiming at small card houses that don’t use Kem. The brand the Hustler casino uses are always bowed badly with the corners up
 
Where did you that one? Is it plastic? I never even though something like this existed!
These have been around ever since there were cards. Cards were exclusively paper, and always needed maintenance, like flattening and trimming bent corners. There a whole array in f things for keeping them in shape. Search eBay for playing card press
 
These have been around ever since there were cards. Cards were exclusively paper, and always needed maintenance, like flattening and trimming bent corners. There a whole array in f things for keeping them in shape. Search eBay for playing card press
I tried these things and they didn't work for me at all...
It's great that the author succeeded! But, frankly, given all these rumors about the KEM price going up to $70, I would just take 10 PVC decks, any reputable brand, instead of one KEM.
$70 per setup is beyond all reasonable limits.
 
These have been around ever since there were cards. Cards were exclusively paper, and always needed maintenance, like flattening and trimming bent corners. There a whole array in f things for keeping them in shape. Search eBay for playing card press
Neat! I know for paper cards there are those "card clips" that you put the box in to flatten the cards out, i lost my Ellusionist one a long time ago so i got a cheaper clip. Hard to find a good quality card clip without dropping up to 50 bucks on one, but i think they tear up the box imo and not worth it. Maybe just the crappy quality clips? But not worth 40 bucks to find out the box still gets ripped apart, i'll look into a big boy like this at some point as i use paper decks when I'm playing in a NSFP (not safe for plastic) space. Not looking for magic to happen on my kems But it's nice to have slight maintenance on all brands/material, especially paper. Might squeeze out the sweat from paper decks too 😂
 
Look up flower drying presses. It wouldn’t be that hard to make your own card press. New Accessory? Custom made card presses?
 
I tried these things and they didn't work for me at all...
It's great that the author succeeded! But, frankly, given all these rumors about the KEM price going up to $70, I would just take 10 PVC decks, any reputable brand, instead of one KEM.
$70 per setup is beyond all reasonable limits.
They’re up to $75 as of today. A ridiculous price to pay for a setup. But that doesn’t change the fact that they’re the best cards in the world.
 

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