posted 5 years ago
It could be that you are just very lucky to have a clay that doesn't crack readily upon drying out. Most clays do, and this is one reason why some sort of other ingredients like sand or straw are added to it to make cob, adobe, etc. Even for stucco I found that I needed to actually have more than half sand by volume to not have the stucco just crack and flake off. I guess one way to proceed, if you have the time and energy, is to do one or more small building projects with it, and then see how they perform for say a year or so, before doing anything really important with it.