Your best bet is to throw a couple of big towels in the dryer, get them good and hot, then take them out, fold them, and put them on top of the vinyl board all rolled out flat-like, then leave them until the towels are completely cool. Use no more heat than this. Might take a couple of rounds.
Ironing vinyl chess boards?
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hermanjohnell wrote:
I have a vinyl rollup chess board that has been stored incorrectly and show som wrinkles that won´t go away. I´m thinking of trying to iron them out. I mean, it works on shirts and trousers. Of course temperature is an issue and for extra safety I plan to use a sheet of baking paper between the mat and the iron. Does this sound like a reasonable plan or idiocy? Has anyone tried?
Maybe try a damp tea towel , with the iron set on stream , with the board sq side down so as not to damage the sqs ! 
Thanks for your input. Keep it coming. Anyway I´ll try it this weekend and I´ll document and report how it went.
hermanjohnell wrote:
Thanks for your input. Keep it coming. Anyway I´ll try it this weekend and I´ll document and report how it went.
It should work, as this is the right way to stream iron trousers . Just to add vinyl rollup chess board should be stored sq side out when rolled, Then I just put some hair ties to hold then in place never rubber bands .
Jill_St_James wrote:
These cost recycle on Amazon. If you can't afford it, maybe start a Gofundme or something. But it's probably worth saving the money and risking burning your house down, right?
Here in the EU we try to recycle Jill_St_James As $16.00 is a price of a bottle of red wine in Sweden & Sweden is not a cheap place to live in 
DesperateKingWalk wrote:
hermanjohnell wrote:
I have a vinyl rollup chess board that has been stored incorrectly and show som wrinkles that won´t go away. I´m thinking of trying to iron them out. I mean, it works on shirts and trousers. Of course temperature is an issue and for extra safety I plan to use a sheet of baking paper between the mat and the iron. Does this sound like a reasonable plan or idiocy? Has anyone tried?
Here is my advice. Buy a new roll up board that is not vinyl. You will be much happier.
Where´s the fun in that? I have a lot of chessboards so that´s not the issue. I want to see if I can fix this one.
Oct 17, 2023
0
#9
Put the vinyl board in the sun on a flat surface. It will be restored in an hour or two.
jz3ro wrote:
Put the vinyl board in the sun on a flat surface. It will be restored in an hour or two.
It late autumn here in Sweden and I don´t want to wait till summer.
About 30 seconds (maybe less) in a clothes drier works for me. Just take care not to overheat.
Hang on a washing line with heavy weights & leave for some days ? or sandwich between to hard board & stick under your mattress then sleep on it ? A trick which laurel & hardy did to iron his pants . 
Dear Wrinkled and Creased Vinyl Board Owners:
I work with quite a few scholastic clubs, mentoring young chess learners. I often cringe when I inherit a set of boards and pieces that have been haphazardly stored by the previous students (or unaware Coach, eek!). The worst, in my view, is when the vinyl board is folded into fourths and stored that way under the weight of many bags of (unweighted) pieces. Usually, I have the students learn to roll them individually, or store a trove of them with one-fold only.
In the past, I have had success with laying a wrinkled vinyl board in the sunlight, indoors. Yesterday, I tried this but outdoors. The wrinkles remained, likely because the autumn sunlight is not as penetrating as that of summer. Seems logical.
Well, I went ahead a tried the ironing method, on a couple boards that had been stored away at a school since pre-Pandemic. Here is the before:
Not too bad, but it annoys me during play, when the board does not lay completely flat.
Here is after ironing on setting 3 of 7 on my iron:
A good deal better, but I would still give it another go, as my OCD does not allow me to overlook the timeworn fold(s). It is a curse, and a gift...depending on the day and your point of view.
LESSONS LEARNED:
+ store vinyl boards properly, rolled squares out, to minimize creases, scratches, scuffs, and tearing
+ the mailing tube or pvc pipe is a great, cheap method
+ iron back of vinyl board (not the colored square side)
+ iron on a non-textured surface (ie the towel in the above pictures was not as flat as my ironing board)
- there is a point of no return with the amount of heat used, that is, if you become impatient with a low-level heat setting, and up it like I did, you run the risk of heating through the vinyl (if you smell the vinyl... your iron is too hot) 
+ I have been using an iron on clothes for many years (denim & dress shirts, even silk); there is less risk of burning your house down than with candle use (think birthdays, holidays, gatherings or spa bath). But of course, if you leave an iron unattended and it gets knocked over by an air draft, child, or accident-prone adult... it is not the fault of the iron. I would ask the previous poster, why are stoves and automatic coffee machines allowed to be in homes?
To sum up, the ironing worked for me, but patience is needed to resuscitate an abused vinyl board.
See my post (#47) here regarding storage of viny rollup boards...
Vinyl vs. Mousepad Board - Chess Forums - Page 3 - Chess.com
https://www.chess.com/forum/view/chess-equipment/vinyl-vs-mousepad-board?page=3
I´ve now ironed out the wrinkles and my roll-up board is like new! I set the iron on medium/low (between one and two dots) and had a linen tea towel between the board and the iron. I started ironing on the backside of the board and finished with ironing the upsida. No problems whatsoever.
hermanjohnell wrote:
I´ve now ironed out the wrinkles and my roll-up board is like new! I set the iron on medium/low (between one and two dots) and had a linen tea towel between the board and the iron. I started ironing on the backside of the board and finished with ironing the upsida. No problems whatsoever.
I knew it would work , As when I was a younger man , I had to iron my school uniform . the thing's you can do with a good stream iron when it comes to creases + wrinkles .
I have a vinyl rollup chess board that has been stored incorrectly and show som wrinkles that won´t go away. I´m thinking of trying to iron them out. I mean, it works on shirts and trousers. Of course temperature is an issue and for extra safety I plan to use a sheet of baking paper between the mat and the iron. Does this sound like a reasonable plan or idiocy? Has anyone tried?