cementing gluing rocks together

[Tyfighter]

Keep in mind that if you actually want to build a larger structure you will want to use something along with the hydraulic cement. Hydraulic cement doesn't bond to the rock it is just encases it. I would recommend using it along with acrylic rods. If you do go this route just make sure you give the cement time to set. Just because it says "quick cure" doesn't mean it has ctually set up in just 5 mins.