Material: Bluestone Application:for grinding dry and wet food, teaching, ornamentalIf you want to get refined powder, You can grind it several timesMaintenance: Wash and dry with water after use, no need for other curingThe manual Tofu/grains/spices/grinder made of all handmade natural stoneAll kinds of bluestone grinder weights are respectively 39.7lb / 50.7lb / 72.8lbUpper plate and lower plate specifications are respectively 7.87inx11.8in / 8.66inx13.8in / 9.84inx15.7inPackage includes: 1x Wooden frame1x Bluestone GrinderPlease move it carefully, it is really heavy, over 40 pounds. To avoid your feet injuries, maybe you can use a tool car to carry itLarge-scale stone grinder(9.84inx15.7in) can directly mill the powder.If using a small size stone mill ,dry soybean should be soaked firstThe bluestone grinder is made in China, and it has an absolutely advantage in Natural bluestone.It's also a very representative traditional utensils in ChinaWhen using a new stone mill for the first time, it must be cleaned first, especially in the hole for cutting and the core hole. Usually use rice that has been soaked in water for more than 6 hours. Use a spoon to add water and rice to start grinding. Remember to turn it counterclockwise. Do not eat the first grinded rice slurry(China calls it Kaimo). It can be used normally in the future.