I just wanted to share. I'm working on a larger one for a birdbath, so this was practice. But it leaks, and the new one I'm working one has developed a big crack that leaks too. Serious question, will bees wax be a good choice to seal it?
A 2 part epoxy will do you well. Make sure to clean all edges of the fracture to remove dust and grime, and make sure everything is dry before you start mixing.
I think wax would fall apart in any kind of heat with those forces acting on it. Good luck.
If you really worry about leaching chemicals you can get food safe epoxy. But I think that most stuff are really safe (boat epoxy) just use something UV stable.
I bet the pollinators really appreciate all those little grooves while getting a drink!
Personally, I think this presents a great opportunity to practice some kintsugi in addition to the rock carving. Beeswax may stop the leak for a while but it will break down over time in addition to having a different expansion rate than the rock. There might be a mortar or concrete blend that would work as well, but you'd be best served calling your local hardscape suppliers to ask around about it. Off the shelf stuff might expand too much while curing, causing more damage.
There are some great epoxy based solutions in here, but why is it cracking in the first place? Is it frost wedging or something? You may need to seal the surface to prevent it from breaking further.
There are some great epoxy based solutions in here, but why is it cracking in the first place? Is it frost wedging or something? You may need to seal the surface to prevent it from breaking further.