Materials La doll clay(stone clay) help

No expert, but clay in general can chip and crack just like everything else can. You just need to take care of it.

While sculpting, the more water there is in the clay, the longer it takes for the clay to dry. You should have some water on hand depending on how long you work with the clay too, since your hands will absorb the water and make it harder to work with. All unfinished clay models should be covered with a damp cloth or paper and left someplace cool when you're not working with it.

After you're done with the model and the clay is completely dry, you should be able to wash the clay with water. I wouldn't do it for a week at least to make sure the clay bonds are fully formed, but my grandmother washes the dust off the clay sculptures she makes all the time. I'll recommend what she does, which is briefly run the piece under the faucet then set it aside and dry it, or taking wet paper towel or a sponge to it. I think the key is to not let the piece get wet for too long.

 

I'd probably go with 3 or so packets... just to be safe... it depends on how efficient and economical a sculpter you are. I'm not, but then I can afford more clay.

It is strong... I haven't noticed any chipping or cracking, just yet... though be careful when applying new layers of wet clay. Wet already dry clay and score it, otherwise you might get air pockets which are a pain when trying to sand.

I haven't painted with it much.. I tried a flesh toned laquor, which took fairly well... getting a glossy look on parts might take things like varnish and like.

It scratches fairly easily. and it's not waterproof... I haven't gotten far enough in my own making to know just yet, but it's suggested to treat a completed work to some form of water proofing sealant.. I don't have any idea on what to use, just yet, as I'm not ready.