Magnetic paper letters Part One

My work is often temporary, I am constantly looking for ways to install work that will not damage the location it is installed in.

I have landed on magnets. As long as I have a magnetic surface, these letters are good to go.

I am currently trying to work out the right kind of magnet. What shape and size? But more importantly, how strong.

My letters are lightweight - the letter nets are particularly lightweight as they are hollow. However, the cardboard letters are becoming dense. 

The video above shows attempt one. There will be many more attempts that follow, testing other materials and the strength of the magents and their staying power.