This works on anything mounted to a wall with construction adhesive.

I was told my job could not be done without leaving holes in the drywall. I knew there had to be another way, but no one would help me.

I called one of the nation's largest suppliers of dry erase boards. They didn't know how to do it, either.

But it seemed to me a wire saw would fit behind in the gap between the back of the board and the wall, and could be used to cut through the adhesive. If you ask the good folks at PPG, makers of Liquid Nails, they'll tell you to use a wire saw!

I went to every retailer, looking for a wire saw. Not one employee in any store knew what they were without looking it up, and not even that helped a few of them! Only one retailer had one, but it was only a few inches long—not enough for my needs.

I ended up ordering a spool of OB saw wire and two OB saw wire handles online. It's most often used on the farm, to remove horns. From animals, not people.

It worked exactly as I expected—almost. It's heat that does most of the cutting, so the adhesive will melt, and can solidify back together, if not kept apart while cooling. We had two people, but a third would have been great. Three or more would be necessary to remove a large board.

With one person on each side, we worked the wire saw back and forth, cutting through multiple small sports of adhesive. We had to do this three times, from top to bottom, because the melted glue would rejoin to itself, but we got it, eventually. I imagine a large board would have to be cut vertically, from above and below, moving along the length of the entire board.

We used pliers to gently peel residue from the wall. What we could not grasp with pliers, we sanded. The wall remained pristine. No holes.

It burns me up when someone says, "It can't be done." There's always a way.