... while waiting for the experts to arrive. Sasha Wardell is an artist who works in bone china, her site is at  https://sashawardell.com/ Her 1st book Slipcasting contains some  bone china specific information.  I haven't seen her 2nd book Porcelain and Bone China but I expect it's well worth reading. She gives an overview of porcelain vs bone china in Tempting Transparency https://tinyurl.com/mryx92z7 You need to high fire first because bone china has a short firing range and