I have a 10 x 10cm square plate of metal I would like to insert into a hole in the wall of plastic water tank (cube shape), I'm planning on 3D printing the tank itself (only 1-2 litres).
What would be the best design to stop water from leaking between the plate and the plastic body?
So far all I can think of is to make the hole in the tank smaller (i.e. 8 x 8cm) than the metal sheet and perhaps using a sealant and affix it using screws possibly, but as there's live wiring around it I need to be sure it has the best possible seal. Any design ideas would be much appreciated