I have this happen too! I have dialed back on the heat a little, and if I remember I tip the iron down on part of the board and smush it around a second before putting it on the fabric.
Originally Posted by
QuiltnNan
i sometimes have difficulties when i first heat up the iron. i turn the dial all the way up and then back a tch to the cotton setting. sometimes i don't turn the tch enough so the iron is too hot on that first press.