To get glue off the base, use bubble wrap. I buy a big roll of the stuff every month or so. I cut a strip, wrap it around a magazine. And then slide the piece down it, after using one or two sheets...all the glue has stuck to the bubble wrap. Its brilliant, much better than mirror slide. I then use a citrus solvent remover, spray the base alot, and then let it soak in water for about 30mins, then shampoo, and I'm ready to go for another week.