Only Olfa says to soak theirs. not sure of other brands.

I use of the really big mats, about 34 x 60, so it is way, way to big to put in the bath tub and keep it flat. In the past I've seen mat smoothers on line (I'm sure), but have never seen one in a store. Anyone have any idea where I could order one?

here's one I found........whenever your looking for something just google it!

http://www.quiltinaday.com/shoponlin...ay.asp?i=23645

http://www.quiltinaday.com/shoponlin...ay.asp?i=23645

I also had a warped board standing behind my cutting table & was going to cut it up for bag bottoms but like sewNso mine also straightened it's self out so I'm using it again.

I saw the soaking info on Pinterest so had to try it, of course. It made no difference whatsoever... So I chalked it up to another Pinterest CROCK, like so many "household hints" on there that don't really work.

http://www.generations-quilt-pattern...tting-mat.html
Here is more info on it.

So what does the vinegar do for the mat? And how much water to 1/4 cup vinegar?

Never mind. I went to the posted website. 1/4 cup vinegar to 1 gallon cool water. Let soak for about 20 minutes then wash with mild soap, soft brush to get fibers out of cuts. I am going to try this.

Wow! I did not know that! This is what is so great about this Board, I learn something new and get new ideas from all you great members!!! Thank you for this information!

Or you can lay a warped mat on the hood of your car and the lumps will disappear.