Thanks for the question! I do not believe that Lignin is the right "glue" in this case. It is quite water resistant, but to bind properly, it needs a certain a

Thanks for the question! I do not believe that Lignin is the right "glue" in this case. It is quite water resistant, but to bind properly, it needs a certain amount of finer particles in the mix. If You choose gravel instead of pebbles, it should on the other hand work fine.