You mentioned in my build thread that seeing it made you consider using insulation foam, but I have to warn you: be careful what you put on it. I recently applied some spot putty and it started to melt right through. I also know from experience that you can't spray paint directly on it. I haven't tried resin on it, but I think I'll be testing different products on scraps before I just go ahead and do it to my armour pieces again. Oops.
your grav hammer has definately made the top 10 coolest things i have seen on this sight so far, and that compares with 5 million sets of armor, a DMR that looked more realistic than the actual gun that the DMR was based off of, and a full sized banshee... spot on to youjust need to give it a blade on the back of it and paint it