Welcome to the forum. I hope you find answers and friendships here. And share your experiences, good and bad with clay. No one is perfect, but we are all perfectly will to keep trying and learning.
As to your question; I do not have enough experience working with porcelain. So I'm out.
But be patient, I know you will get some help, soon.
Also, check out CAD video archives. There is a whole lot of good help there as well.
Best wishes and tons of success.
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