What's the rubber board sticking to the iron plate?
Rubber plate glued to the iron plate, if it is small area bonding, suitable for HY-303, larger area bonding, applicable HY-106AB
If a large piece of rubber board and iron plate stick together, it is necessary to use the heat source (hot towel, hair dryer) to continuously adhere to the heating panel, because the rubber and iron plate rising coefficient is different, heating will crack!
Do you mean a small piece of rubber that is glued to the iron plate? If it's small. The steel wire can be continuously rubbed to reveal the iron plate.