already when unpacking the upper rubber mat already half solved. After the preparation of espresso 3 the rubber mat was from final. The glue must be kept absolutely unfit for the rubber to the metal. Since I did not want to wait again and send it back, I've tried, and none with contact adhesive. Last Resort Industriekleber (cyanoacrylate) holds bombproof for now, I'm curious how long? The station is compared to other rather cheap but unfortunately by the rather poor workmanship the price of nearly 25.- Euro not worth therefore only 3 stars. Who wants so do not try different adhesive or return the goods immediately can better it alone.