Generally I find super glue to be pretty unimpressive although I am impatient. I didn’t use concrete powder but since the break was so clean the repair is actually awesome. Once that is painted it will look great. I will still coat the back of the cracks with epoxy but I am astonished at how well the super glue worked and how easy the bleed through cleaned up with a dremel. The supports are really firm too. It’s going to be hard to spot those repairs after paint. edit: In my dead company one of the parts had to be affixed during assembly with a super glue. It turns out that you can't just buy super glue from the dollar shop, that is garbage that won't last. I settled on Loctite brand super glue (not a paid endorsement ha ha). I just found that particular brand to be particularly durable although I'm still surprised at just how good a job it did on this particular repair.