I'm looking to make rice bags you can microwave. I've made dozens of them out of straight cotton fabric and thread. I wanted to make an owl shaped one, though, and found a cute template online. The pattern, though, called for embroidery floss and felt?? I would have thought that if you microwave felt it would melt. And would embroidery floss be safe for the microwave? I'm making them for my DB and DSIL who are expecting. They've never used them before, but heard they were great in the delivery room for back pain. So, I was thinking of using the embroidery floss not just for the eyes, as the pattern called for, but also to embroider simple microwave instructions on the back and to label which bag it was (I plan on putting lavender in one with the rice and chamomile in another with the rice).
So, is felt really microwaveable and is embroidery floss safe in the microwave?
(I did try those corn and potato bags before, using the microwaveable batting, and had to buy a new microwave when the bags caught fire, so I'd like to be overly cautious on this one)