You are perhaps assuming that I did not think ahead.... I had already straightened and flattened my platform. The aluminum I installed did not add any stress as it was carefully sanded and fitted into the space.
The best and most proper method with almost any Glue to bond 2 flat pieces is to clamp them against a dead flat surface.This is a proven technique used in wood working and metal working among other materials as well. Using Marine epoxy is not your normal epoxy either.... also, Sanding the surfaces will definitely build a better Bond.
All that aside,
Even if the aluminum eventually
detached itself, you can simply glue it back ... it's not a major issue. The idea is to have a flat platform.
The method I have described for doing it in previous posts has worked flawlessly on 2 machines that are run 6 days a week.
Your method may work well too.
Happy Printing !