This construction did not allow for a mechanical bond between the metal and silicone, which meant chemical bonding was the only option. Together with the client, the mould supplier, the silicone supplier and others, we did extensive research into the best way to achieve this bond. It showed that preparing the small metal plates was the key. After several tests, we discovered the optimal way to do this. A number of factors play a role: from how to clean and sand the plate to humidity, temperature and the time in between the steps of the process. Every detail counts! We carefully documented the entire process, so each operator can know exactly how the steps are to be carried out.