Has anyone done major construction of Liverock Structures using 2 part Epoxy alone?

[arconom]

I'm think of making some pillars in my tank for a place to put more corals and add some more depth to my current 75 tank.

How much work have you done using Epoxy alone making structures? What kind of expoxy did you use? How long has the structure been standing?

Do you have any pictures? I'm also looking to make some overhangs.