Okay -- not just mug rugs but coasters. I notice they're really the thing here but I have a question. We have good wood furniture. The idea of putting batting and 2 pieces of cloth on the table to protect them from a sweaty glass ---well, it breaks ME out in a sweat!!! If the sweat works thru the 3 layers, it'll ruin the tables!!! Do you just use them on glass tables?

Hmmm, never had that happen, but... what if you got some plastic and added a layer at the bottom? You can find yardage in the upholstery section, or cut up an old plastic table cloth.

For the criss cross coasters, a piece of plastic could be slipped in under the crossed over parts.

What about the iron on vinyl?

I wonder if that insulbrite batting would be waterproof. I have some so maybe I'll test it.

I often use plastic tablecloths (flannel backed)for things of this nature. I just cut them up and line them underneath the batting. We've even made diapers using this! It's much cheaper than PUL.

Maybe do a test run, turn down the temp a little. Or iron the top then turn down the temp before doing the back? Not sure but could have fun trying.

I think I have some of that somewhere. I wonder how it would be ironed to the wrong side of the backing.

I made a 12" coaster for my end tables and inserted a cheap vinyl placemat cut to size. I have used them 8 years. Works great.

I only use mine for coffee cups... I was afraid that even if I put some plastic inside, that the moisture would wick to the edges of the fabric.