I bought some of BRS's generic superglue for $5 bucks to put back together my branch that broke in shipping, worked great, set in about 30 seconds. If you're doing a lot there is a $25 tube that is half the cost per ounce as the little tube. I used about half the tube on 5 joints that used to be connected, rocks that don't line up exactly will probably use more. I also ordered 2 of the 5 dollar sticks of coraline purple colored putty if I need to build up a little to make 2 rocks work together. There's a 10% off flash sale today and you could probably cash in your points from the big order yesterday and get it for close to free!