Found a nice little wooden table that had been discarded after a church's "garage" sale, mosaic'd it to be a plant stand on my porch. Then, duh!...realized wood and mosaic don't work outside. Sawed off the legs...a coffee table! Got a new sofa, doesn't look right together. Put the table back out on the porch in hopes all the tile will start to pop off on it's own and I'll re-mosaic. NOPE...nothing is happening. I'm in FL...lots of moisture...have had several freezes and then warm (80's) again. How long will this take? Can I remove it all with a hammer???