So like maybe scratch in a crosshatch pattern on the aluminum, that way there would be a lot to grab onto.

My plan was to clean the aluminum, scuff it up real good and then pour it in and let that section self level and them let it cure.

I’m not close to the platform…it is at a cottage a few hours away. I will try to describe it better. It is an aluminum platform that is V-shaped (if you looked at it from the side….but the V would be maybe 1/2 inch difference in depth from the low point to the high point and it would be about a 3ftx5ft area if looked at from above.

Additional information: I have two buckets of indoor/outdoor epoxy adhesive and I have 1 huge bucket of two polyurethane adhesive. Not sure if one would be better than the other for this project.

Thanks in advance folks!